Restructuring and Related Activities [Abstract] Restructuring Costs Restructuring and Related Activities Disclosure [Text Block] Segment Reporting [Abstract] Operating Segment Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Health Plans Health Plans [Member] Health plans. Other Other Segments [Member] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Other operating Segment Reconciling Items [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Total revenue Revenues Gross margin Gross Profit Add: other operating revenues Add: gain on sale of subsidiary Gain (Loss) on Disposition of Business Less: other operating expenses Costs and Expenses Operating income Operating Income (Loss) Other expenses, net Nonoperating Income (Expense) Income before income tax expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Statement of Cash Flows [Abstract] Statement [Table] Statement [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] 1.125% Conversion Option Embedded Derivative Financial Instruments [Member] 1.125% Call Option Call Option, Derivative Asset [Member] Call Option, Derivative Asset [Member] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] 1.125% Warrants Cash Convertible Senior Notes Due 2020, Warrants [Member] Cash Convertible Senior Notes Due 2020, Warrants [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Convertible Notes Convertible Debt [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 1.125% Convertible Notes Cash Convertible Senior Notes due 2020 [Member] Cash Convertible Senior Notes due 2020 [Member] 1.625% Convertible Notes Convertible Senior Notes Due 2044 [Member] Convertible Senior Notes Due 2044 [Member] Statement [Line Items] Statement [Line Items] Percentage of contractual interest rate on derivative Derivative, Fixed Interest Rate Percentage of contractual interest rate Debt Instrument, Interest Rate, Stated Percentage Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Other Liabilities Disclosure [Abstract] Fee-for-service claims incurred but not paid (“IBNP”) Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Paid (IBNP), Fee-for-service Claims, Amount Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Paid (IBNP), Fee-for-service Claims, Amount Pharmacy payable Pharmacy Claims Payable Pharmacy Claims Payable Capitation payable Capitation Claims Payable Capitation Claims Payable Other Other Claims Payable Other Claims Payable Medical claims and benefits payable Liability for Claims and Claims Adjustment Expense Operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Deferred income taxes Increase (Decrease) in Deferred Income Taxes Share-based compensation Share-based Payment Arrangement, Noncash Expense Amortization of convertible senior notes and finance lease liabilities Amortization Of Debt Discount (Premium) And Sale Leaseback Financing Obligation Amortization of Debt Discount (Premium) and Sale Leaseback Financing Obligation (Gain) loss on debt extinguishment Gain (Loss) on Extinguishment of Debt Non-cash restructuring costs Non-cash Restructuring Charges Non-cash Restructuring Charges Gain on sale of subsidiary Other, net Other Operating Activities, Cash Flow Statement Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Receivables Increase (Decrease) in Receivables Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Medical claims and benefits payable Increase (Decrease) in Health Care Insurance Liabilities Amounts due government agencies Increase (Decrease) In Medical Premium Liability Due To Agency Increase (Decrease) in Medical Premium Liability Due to Agency Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Deferred revenue Increase (Decrease) in Contract with Customer, Liability Income taxes Increase (Decrease) in Income Taxes Payable Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of investments Payments to Acquire Marketable Securities Proceeds from sales and maturities of investments Proceeds from Sale and Maturity of Marketable Securities Purchases of property, equipment and capitalized software Payments to Acquire Property, Plant, and Equipment Other, net Payments for (Proceeds from) Other Investing Activities Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Investing Activities Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Repayment of principal amount of 1.125% Convertible Notes Repayments of Convertible Debt Cash paid for partial settlement of 1.125% Conversion Option Cash Paid For Settlement Of Conversion Option Cash Paid For Settlement Of Conversion Option Cash received for partial termination of 1.125% Call Option Proceeds from Convertible Debt Cash paid for partial termination of 1.125% Warrants Payments for Repurchase of Warrants Proceeds from borrowings under Term Loan Facility Proceeds from Long-term Lines of Credit Repayment of Credit Facility Repayments of Lines of Credit Repayment of 1.625% Convertible Notes Repayments of Notes Payable Other, net Proceeds from (Payments for) Other Financing Activities Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Net decrease in cash, cash equivalents, and restricted cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, cash equivalents, and restricted cash and cash equivalents at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents, and restricted cash and cash equivalents at end of period Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] Schedule of non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Common stock used for share-based compensation Stock Issued Details of sale of subsidiary: Proceeds from Divestiture of Interest in Subsidiaries and Affiliates [Abstract] Decrease in carrying amount of assets Increase (Decrease) in Carrying Amount of Assets Increase (Decrease) in Carrying Amount of Assets Decrease in carrying amount of liabilities Gain (Loss) on Disposition of Liabilities Gain (Loss) on Disposition of Liabilities Transaction costs Disposition of Business, Transaction Costs Disposition of Business, Transaction Costs Receivable from buyer - recorded in prepaid expenses and other current assets Disposition of Business, Receivable from Buyer Disposition of Business, Receivable from Buyer Gain on sale of subsidiary Details of change in fair value of derivatives, net: Details of change in fair value of derivatives [Abstract] Details of change in fair value of derivatives Change in fair value of derivatives, net Derivative, Gain (Loss) on Derivative, Net 1.625% Convertible Notes exchange transaction: Business Combination, Description [Abstract] Common stock issued in exchange for 1.625% Convertible Notes Notes Issued Component allocated to additional paid-in capital, net of income taxes Notes Issued, Fair Value Adjustment Increase (Decrease) Notes Issued, Fair Value Adjustment Increase (Decrease) Net increase to additional paid-in capital Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Senior Notes Senior Notes [Member] Term Loan Facility Line of Credit [Member] 5.375% Notes Senior Notes Due 2022 [Member] Senior Notes Due 2022 [Member] 4.875% Notes 4.875% Senior Notes [Member] 4.875% Senior Notes [Member] Term Loan Facility Term Loan [Member] Term Loan [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Total Long-term Debt, Gross 2020 Long-term Debt, Maturities, Repayments of Principal in Year Two 2021 Long-term Debt, Maturities, Repayments of Principal in Year Three 2022 Long-term Debt, Maturities, Repayments of Principal in Year Four 2023 Long-term Debt, Maturities, Repayments of Principal in Year Five 2024 Long-term Debt, Maturities, Repayments of Principal in Year Six Long-term Debt, Maturities, Repayments of Principal in Year Six Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Six Long-term Debt, Maturities, Repayments of Principal after Year Six Equity [Abstract] Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Accounting Policies [Abstract] Medicaid program: Amounts Due To Government Agencies, Medical Program [Abstract] Amounts Due To Government Agencies, Medical Program [Abstract] Medical cost floors and corridors Amounts Due to Government Agencies, Medical Cost Floors and Corridors Amounts Due to Government Agencies, Medical Cost Floors and Corridors Other amounts due to states Amounts Due to Government Agencies, Amounts Due State Amounts Due to Government Agencies, Amounts Due State Marketplace program: Amounts Due To Government Agencies, Marketplace Program [Abstract] Amounts Due To Government Agencies, Marketplace Program [Abstract] Risk adjustment Amounts Due to Government Agencies, Risk Adjustment Amounts Due to Government Agencies, Risk Adjustment Cost sharing reduction Amounts Due to Government Agencies, Cost Sharing Reduction Amounts Due to Government Agencies, Cost Sharing Reduction Other Amounts Due to Government Agencies, Other Amounts Due to Government Agencies, Other Total amounts due government agencies Medical Premium Liability Due To Agency Medical Premium Liability Due to Agency Leases [Abstract] Operating leases: Lessee, Operating Lease, Description [Abstract] ROU assets Operating Lease, Assets, Lessee [Abstract] Operating Lease, Assets, Lessee [Abstract] Other assets Operating Lease, Right-of-Use Asset Lease liabilities Operating Lease, Liabilities, Lessee [Abstract] Operating Lease, Liabilities, Lessee [Abstract] Accounts payable and accrued liabilities (current) Operating Lease, Liability, Current Other long-term liabilities (non-current) Operating Lease, Liability, Noncurrent Total operating lease liabilities Operating Lease, Liability Finance leases: Lessee, Finance Lease, Description [Abstract] ROU assets Finance Lease, Assets, Lessee [Abstract] Finance Lease, Assets, Lessee [Abstract] Property, equipment, and capitalized software, net Finance Lease, Right-of-Use Asset Lease liabilities Finance Lease, Liabilities, Lessee [Abstract] Finance Lease, Liabilities, Lessee [Abstract] Accounts payable and accrued liabilities (current) Finance Lease, Liability, Current Finance lease liabilities (non-current) Finance Lease, Liability, Noncurrent Total finance lease liabilities Finance Lease, Liability Schedule Of Premium Revenue By Health Plan Type [Table] Schedule of Premium Revenue by Health Plan Type [Table] Schedule of premium revenue by health plan type. Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Medicaid Expansion Medicaid Expansion [Member] Medicaid Expansion [Member] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] CMS Subsidies CMS Subsidies [Member] CMS Subsidies [Member] State and Federal Government Agencies State And Federal Government Agencies [Member] State And Federal Government Agencies [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Retained Earnings Retained Earnings [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Accounts Receivable Accounts Receivable [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] Schedule of Premium Revenue by Health Plan Type [Line Items] Schedule of Premium Revenue by Health Plan Type [Line Items] Schedule of premium revenue by health plan type. Amounts due government agencies Risk adjustment payable Affordable Care Act, Premium Stabilization Program, Risk Adjustment, (Payable) Affordable Care Act, Premium Stabilization Program, Risk Adjustment, (Payable) Risk adjustment receivable Affordable Care Act, Premium Stabilization Program, Risk Adjustment, Receivable Affordable Care Act, Premium Stabilization Program, Risk Adjustment, Receivable Risk adjustment, net payable Affordable Care Act, Premium Stabilization Program, Risk Adjustment, Net Payable Affordable Care Act, Premium Stabilization Program, Risk Adjustment, Net Payable Reimbursement Disposal Group, Including Discontinued Operation, Other Income Maturity period Investments, Maturity Period Investments, Maturity Period Adoption of new accounting standard Cumulative Effect of New Accounting Principle in Period of Adoption Concentration risk, percentage Concentration Risk, Percentage Receivables from state and federal government agencies Receivables, Net, Current Contractual interest at coupon rate Interest Expense, Debt, Excluding Amortization Amortization of the discount Amortization of Debt Discount (Premium) Totals Interest Expense, Debt Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Carrying Amount Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Term Loan Facility Revolving Credit Facility [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Current liabilities: Derivative liability Current Liabilities [Member] Current Liabilities [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Percentage of contractual interest rate on notes Fair value of debt Debt Instrument, Fair Value Disclosure Derivative liabilities Derivative Liability, Fair Value, Gross Liability Investments, Debt and Equity Securities [Abstract] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract] Due in one year or less Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Due after five years through ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Due after ten years Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Estimated Fair Value Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract] Due in one year or less Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Due after five years through ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Due after ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Estimated Fair Value Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Investments Marketable Securities, Current Receivables Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Derivative asset Derivative Asset, Current Total current assets Assets, Current Property, equipment, and capitalized software, net Property, Plant and Equipment, Net Goodwill and intangible assets, net Intangible Assets, Net (Including Goodwill) Restricted investments Restricted Investments, Noncurrent Deferred income taxes Deferred Income Tax Assets, Net Other assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Medical claims and benefits payable Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current Deferred revenue Contract with Customer, Liability, Current Current portion of long-term debt Long-term Debt and Lease Obligation, Current Derivative liability Derivative Liability, Current Total current liabilities Liabilities, Current Long-term debt Long-term Debt, Excluding Current Maturities Finance lease liabilities Finance lease liabilities Capital Lease Obligations, Noncurrent Other long-term liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, $0.001 par value, 150 million shares authorized; outstanding: 63 million shares at September 30, 2019, and 62 million shares at December 31, 2018 Common Stock, Value, Outstanding Preferred stock, $0.001 par value; 20 million shares authorized, no shares issued and outstanding Preferred Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit) Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders' equity Liabilities and Equity Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Select Health Plans California, Illinois, New Mexico, Ohio, South Carolina, Texas, Washington, and Wisconsin [Member] California, Illinois, New Mexico, Ohio, South Carolina, Texas, Washington, and Wisconsin [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Percentage of additional incremental revenue earned Percentage Of Additional Incremental Revenue Earned Percentage of additional incremental revenue earned. Maximum available quality incentive premium - current period Maximum Available Quality Incentive Premium Current Year Maximum available quality incentive premium current year. Quality incentive premium revenue recognized in current period: Quality Incentive Premium Revenue Recognized [Abstract] Quality Incentive Premium Revenue Recognized [Abstract] Earned current period Amount Of Current Year Quality Incentive Premium Revenue Recognized Amount of current year quality incentive premium revenue recognized. Earned prior periods Amount Of Quality Incentive Premium Revenue Recognized From Prior Year Amount of quality incentive premium revenue recognized from prior year. Total Quality Incentive Premium Revenue Recognized Quality incentive premium revenue recognized. Quality incentive premium revenue recognized as a percentage of total premium revenue Quality Incentive Premium Revenue As A Percentage Of Total Revenue Quality Incentive Premium Revenue As A Percentage Of Total Revenue Cover page. Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Available-for-Sale Investments Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Contractual Maturities of Investments Investments Classified by Contractual Maturity Date [Table Text Block] Available-for-Sale Investments in a Continuous Loss Position Debt Securities, Available-for-sale [Table Text Block] Operating Leases Lessee, Operating Lease, Liability, Payment, Due [Abstract] 2019 (for the three months ended December 31, 2019) Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2020 Lessee, Operating Lease, Liability, Payments, Due Year Two 2021 Lessee, Operating Lease, Liability, Payments, Due Year Three 2022 Lessee, Operating Lease, Liability, Payments, Due Year Four 2023 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total lease payments Lessee, Operating Lease, Liability, Payments, Due Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Totals Finance Leases Finance Lease, Liability, Payment, Due [Abstract] 2019 (for the three months ended December 31, 2019) Finance Lease, Liability, Payments, Remainder of Fiscal Year 2020 Finance Lease, Liability, Payments, Due Year Two 2021 Finance Lease, Liability, Payments, Due Year Three 2022 Finance Lease, Liability, Payments, Due Year Four 2023 Finance Lease, Liability, Payments, Due Year Five Thereafter Finance Lease, Liability, Payments, Due after Year Five Total lease payments Finance Lease, Liability, Payment, Due Less imputed interest Finance Lease, Liability, Undiscounted Excess Amount Totals Income Statement [Abstract] Revenue from External Customers by Products and Services [Table] Revenue from External Customers by Products and Services [Table] Medical care costs Health Care, Premium [Member] Cost of service revenue Technology Service [Member] Revenue from External Customer [Line Items] Revenue from External Customer [Line Items] Revenue: Revenues [Abstract] Premium revenue Premiums Earned, Net Premium tax revenue Health Care Organization, Premium Tax Revenue Health Care Organization, Premium Tax Revenue Health insurer fees reimbursed Health Care Organization, Insurer Fee Revenue Health Care Organization, Insurer Fee Revenue Service revenue Insurance Services Revenue Investment income and other revenue Interest and Dividend Income, Operating Total revenue Operating expenses: Costs and Expenses [Abstract] Cost of revenue Cost of Goods and Services Sold General and administrative expenses General and Administrative Expense Premium tax expenses Premium Tax Expenses An assessment levied by a state government on the net premium income collected. Health insurer fees Health Care Organization, Insurer Fee Expense Health Care Organization, Insurer Fee Expense Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Restructuring costs Restructuring Costs Total operating expenses Gain on sale of subsidiary Other expenses, net: Nonoperating Income (Expense) [Abstract] Interest expense Interest Expense Other expenses (income), net Other Nonoperating Income (Expense) Total other expenses, net Income tax expense Income Tax Expense (Benefit) Net income Net income per share: Earnings Per Share, Basic and Diluted [Abstract] Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Corporate debt securities Corporate Debt Securities [Member] Asset-backed securities Asset-backed Securities [Member] GSEs US Government-sponsored Enterprises Debt Securities [Member] Municipal securities Municipal Securities [Member] Municipal securities. Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Estimated Fair Value Debt Securities, Available-For-Sale, Unrealized Loss Position [Abstract] Debt Securities, Available-For-Sale, Unrealized Loss Position [Abstract] In a Continuous Loss Position for Less than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months In a Continuous Loss Position for 12 Months or More Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Unrealized Losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] In a Continuous Loss Position for Less than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss In a Continuous Loss Position for 12 Months or More Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total Number of Positions Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract] In a Continuous Loss Position for Less than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions In a Continuous Loss Position for 12 Months or More Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Statement of Stockholders' Equity [Abstract] 1.625% Notes Stated percentage of warrants Class Of Warrant Or Right, Stated Interest Rate Class Of Warrant Or Right, Stated Interest Rate Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Consolidation and Interim Financial Information Consolidation And Interim Financial Information, Policy [Policy Text Block] Consolidation And Interim Financial Information, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Premium Revenue and Contractual Provisions That May Adjust or Limit Revenue or Profit Revenue from Contract with Customer [Policy Text Block] Leases Lessee, Leases [Policy Text Block] Concentrations of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Recent Accounting Pronouncements Adopted and Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Operating lease expense Operating Lease, Cost Finance lease expense: Amortization of right-of-use (“ROU”) assets Finance Lease, Right-of-Use Asset, Amortization Interest on lease liabilities Finance Lease, Interest Expense Total finance lease expense Finance Lease, Cost Finance Lease, Cost Components of Lease Expense and Supplemental Consolidated Cash Flow Information Lease, Cost [Table Text Block] Supplemental Lease Information Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Operating Lease Maturities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Finance Lease Maturities Finance Lease, Liability, Maturity [Table Text Block] Gross realized investment gains Debt Securities, Available-for-sale, Realized Gain Held-to-maturity, within one year, amortized cost Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Convertible Notes Term Loan Facility Current portion of long-term debt: Debt, Current [Abstract] Debt net of unamortized discount Long-Term Debt, Current Maturities, Net Of Unamortized Premium (Discount) Long-Term Debt, Current Maturities, Net Of Unamortized Premium (Discount) Lease financing obligations Capital Lease Obligations, Current Debt issuance costs Debt Issuance Costs, Current, Net Current portion of long-term debt Non-current portion of long-term debt: Long-term Debt, Excluding Current Maturities [Abstract] Debt net of unamortized debt discount Long-Term Debt, Noncurrent, Net Of Unamortized Debt Discount Long-Term Debt, Noncurrent, Net Of Unamortized Debt Discount Debt issuance costs Debt Issuance Costs, Noncurrent, Net Totals Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Restricted Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Amounts Due to Government Agencies Reserves Reported to Other Agencies [Table Text Block] Quality Incentive Premium Revenue Recognized Quality Incentive Premium Revenue Recognized [Table Text Block] Quality incentive premium revenue recognized. Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Medical Claims and Benefits Payable Medical Claims And Benefits Payable [Text Block] Medical claims and benefits payable. Earnings Per Share [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] 1.625% Notes 1.625% Notes [Member] 1.625% Notes [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Denominator: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Shares outstanding at the beginning of the period (in shares) Shares, Outstanding Weighted-average number of shares issued: Weighted Average Number of Shares Outstanding, Basic [Abstract] Exchange of 1.625% Notes (in shares) Weighted Average Number of Shares Issued, Basic Stock-based compensation (in shares) Weighted Average Number of Shares, Share Based Compensation Weighted Average Number of Shares, Share Based Compensation Denominator for net income per share, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Effect of dilutive securities: Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] 1.125% Warrants (in shares) Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants 1.625% Notes (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Stock-based compensation (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Denominator for net income per share, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Non-risk provider payables Medical Claims And Benefits Payable Medical Claims and Benefits Payable Prior period claims, favorable development Prior Year Claims and Claims Adjustment Expense Insurance Claims Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Medical claims and benefits payable, beginning balance Components of medical care costs related to: Components Of Medical Care Costs [Abstract] Components of medical care costs. Current period Current Year Claims and Claims Adjustment Expense Prior periods Total medical care costs Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Change in non-risk and other provider payables Medical Claims And Benefits Payable, Adjustments, Change In Provider Medical Claims and Benefits Payable, Adjustments, Change in Provider Payments for medical care costs related to: Payments For Medical Care Costs [Abstract] Payments for medical care costs. Current period Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year Prior periods Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years Total paid Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Medical claims and benefits payable, ending balance Liability for Claims and Claims Adjustment Expense [Table] Liability for Claims and Claims Adjustment Expense [Table] Liability for Claims and Claims Adjustment Expense [Line Items] Liability for Claims and Claims Adjustment Expense [Line Items] Debt Long-term Debt [Text Block] Mortgage-backed securities Commercial Mortgage Backed Securities [Member] U.S. Treasury notes US Treasury Notes Securities [Member] Foreign securities Debt Security, Government, Non-US [Member] Certificates of deposit Certificates of Deposit [Member] Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Estimated Fair Value Debt Securities, Available-for-sale Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Credit Facility Letter of Credit Letter of Credit [Member] 1.125% Convertible Notes Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Minimum principal amount of advancements Line of Credit Facility, Minimum Threshold for Advancements Line of Credit Facility, Minimum Threshold for Advancements Amortization payment percentage Line of Credit Facility, Amortization Payment Percentage Line of Credit Facility, Amortization Payment Percentage Aggregate principal amount of notes outstanding Current borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Amount outstanding under letter of credit Long-term Line of Credit Face amount Debt Instrument, Face Amount Repayments of debt Repayments of Debt Repayments of principal Debt Instrument, Periodic Payment, Principal Repayment of aggregate carrying amount Debt Instrument, Periodic Payment Loss (gain) on debt extinguishment Conversion ratio Debt Instrument, Convertible, Conversion Ratio Conversion price per share of common stock (in dollars per share) Debt Instrument, Convertible, Conversion Price Effective interest percentage Debt Instrument, Interest Rate, Effective Percentage Remaining amortization period (less than) Debt Instrument, Convertible, Remaining Discount Amortization Period If-converted value Debt Instrument, Convertible, If-converted Value in Excess of Principal Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] RSAs Restricted Stock [Member] PSUs Restricted Stock Units (RSUs) [Member] PSAs Performance Shares [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Total granted Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Granted In Period, Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Granted In Period, Fair Value Total vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] One-Time Termination Benefits One-time Termination Benefits [Member] Consulting Fees Professional Services Fees [Member] Professional Services Fees [Member] Other Restructuring Costs Other Restructuring [Member] Contract Termination Contract Termination [Member] Restructuring Plan [Axis] Restructuring Plan [Axis] Restructuring Plan [Domain] Restructuring Plan [Domain] IT Restructuring IT Restructuring [Member] IT Restructuring [Member] 2017 Restructuring Plan 2017 Restructuring Plan [Member] 2017 Restructuring Plan [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Expected restructuring costs Restructuring and Related Cost, Expected Cost Remaining Decrease to estimated expected costs remaining Restructuring and Related Cost, Expected Cost Remaining, Decrease to Previous Estimate Restructuring and Related Cost, Expected Cost Remaining, Decrease to Previous Estimate Accrued liabilities under restructuring plan Restructuring Reserve Cumulative restructuring costs Restructuring and Related Cost, Cost Incurred to Date Segments Segment Reporting Disclosure [Text Block] Derivative Derivative [Table] Current assets: Derivative asset Current Assets [Member] Current Assets [Member] 1.125% Conversion Option Derivative [Line Items] Derivative [Line Items] Derivative assets Derivative Asset, Fair Value, Gross Asset Percentage of contractual interest rate on Call Option Cash paid for partial termination of 1.125% Warrants Debt conversion, net cash receipts Debt Conversion, Converted Instrument, Amount Medical Claims and Benefits Payable Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] Components of Components of Change in Medical Claims and Benefits Payable Components Of Change In Medical Claims And Benefits Payable [Table Text Block] Components Of Change In Medical Claims And Benefits Payable [Table Text Block] Schedule of Deferred Compensation Arrangement with Individual, Share-based Payments [Table] Schedule of Deferred Compensation Arrangement with Individual, Share-based Payments [Table] Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Beginning Balance (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Ending Balance (shares) Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Begining Balance (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Ending Balance (usd per share) Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Operating lease term Operating Lease, Remaining Lease Term Operating Lease, Remaining Lease Term Operating lease renewal term Lessee, Operating Lease, Renewal Term Operating leases, weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Finance lease term Finance Lease, Remaining Lease Term Finance Lease, Remaining Lease Term Finance lease renewal term Lessee, Finance Lease, Renewal Term Finance leases, weighted average remaining lease term Finance Lease, Weighted Average Remaining Lease Term Operating leases, weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Finance leases, weighted average discount rate Finance Lease, Weighted Average Discount Rate, Percent Restricted cash and cash equivalents Restricted Cash and Cash Equivalents Total cash, cash equivalents, and restricted cash and cash equivalents presented in the statements of cash flows Net Income per Share Earnings Per Share [Text Block] Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Summary of Denominators for the Computation of Basic and Diluted Net Income (Loss) Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Texas Health and Human Services Commission, STARPLUS Program Texas Health And Human Services Commission, STAR PLUS Program [Member] Texas Health And Human Services Commission, STAR PLUS Program [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] YourCare Health Plan YourCare Health Plan, Inc. [Member] YourCare Health Plan, Inc. [Member] Scenario [Axis] Scenario [Axis] Scenario [Domain] Scenario [Domain] Forecast Forecast [Member] Number of reportable segments (in segment) Number of Reportable Segments Number of states in which entity operates (in state) Number of States in which Entity Operates Number of members eligible for the health care programs, approximately (in member) Number Of Members Eligible For The Health Care Programs Number of members eligible for the health care programs. Contract term Contract Term Contract Term Premium revenue Number of countries Number Of Counties In Which Entity Operates Number Of Counties In Which Entity Operates Purchase price of assets Business Combination, Consideration Transferred Fair Value of Assets Measured on Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Schedule of Fair Value, Asset and Liabilities Measured on Recurring Basis - Disclosure Only Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance (in shares) Beginning Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Partial termination of 1.125% Warrants Adjustments to Additional Paid in Capital, Other Conversion of 1.625% Convertible Notes Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt Exchange of 1.625% Convertible Notes (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Exchange of 1.625% Convertible Notes Other comprehensive income (loss), net Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Share-based compensation (in shares) Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Share-based compensation Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Ending Balance (in shares) Ending Balance Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2019 EIP Equity Incentive Plan [Member] Equity Incentive Plan [Member] 2019 ESPP Employee Stock Purchase Plan [Member] Employee stock purchase plan. Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Employee Stock Option Share-based Payment Arrangement, Option [Member] 1.125% Convertible Notes Class of Stock [Line Items] Class of Stock [Line Items] Number of warrants issued (in shares) Debt Conversion, Converted Instrument, Warrants or Options Issued Warrant, strike price per share (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Warrants outstanding (in shares) Class of Warrant or Right, Outstanding Number of warrants terminated (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Terminated, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Terminated, Number Number of common stock issued (in shares) Number of shares issued under ESPP Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Unrecognized compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Weighted average period for recognition Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Unrecognized compensation forfeiture rate Unrecognized Compensation Forfeited Rate Unrecognized compensation forfeited rate. Stock options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Stock options exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Leases Lessee, Operating Leases [Text Block] Leases Lessee, Finance Leases [Text Block] Common stock, par value (usd per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Preferred stock, par value (usd per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Maturities of Long-Term Debt Schedule of Maturities of Long-term Debt [Table Text Block] Schedule of Long-Term Debt Schedule of Long-term Debt Instruments [Table Text Block] Interest Costs Schedule Of Debt Instruments Interest Cost Recognized [Table Text Block] Schedule of debt instruments interest cost recognized. Restricted Share Activity Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Statement of Comprehensive Income [Abstract] Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Unrealized investment income (loss) Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax Less: effect of income taxes Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax Other comprehensive income (loss), net of tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Significant Accounting Policies Significant Accounting Policies [Text Block] Cash used in operating activities: Operating leases Operating Lease, Payments Finance leases Finance Lease, Interest Payment on Liability Cash used in financing activities: Finance leases Finance Lease, Principal Payments ROU assets recognized in exchange for lease obligations: Right-of-Use Asset Obtained in Exchange for Operating Lease Liability [Abstract] Right-of-Use Asset Obtained in Exchange for Operating Lease Liability [Abstract] Operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Finance leases Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Observable Inputs (Level 1) Fair Value, Inputs, Level 1 [Member] Directly or Indirectly Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Mortgage-backed securities Government-sponsored enterprise securities (“GSEs”) U.S. Treasury notes Foreign securities Certificates of deposit 1.125% Call Option derivative asset Call Option [Member] 1.125% Conversion Option derivative liability Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Debt securities, available-for-sale 1.125% Call Option derivative asset Derivative Asset Total assets Assets, Fair Value Disclosure 1.125% Conversion Option derivative liability Derivative Liability Total liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure