0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Unaudited Consolidated Statements of Operations link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Unaudited Consolidated Statements of Comprehensive Income (Loss) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Unaudited Consolidated Statements of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Unaudited Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - Background and liquidity link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Basis of presentation link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Summary of significant accounting policies link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Composition of certain financial statement captions link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Revenue and contract costs link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Debt and finance leases link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Stockholders' equity link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Equity-based compensation link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Fair value measurements link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Commitments and contingencies link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Income taxes link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Net income (loss) per share attributable to common stockholders link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Related party transactions link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Segments and geographic information link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Derivative instruments and hedging activities link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - Acquisition link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - Securitization program and variable interest entities link:presentationLink link:calculationLink link:definitionLink 9952175 - Disclosure - Subsequent events link:presentationLink link:calculationLink link:definitionLink 9955511 - 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Disclosure - Composition of certain financial statement captions - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Composition of certain financial statement captions - Schedule of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Composition of certain financial statement captions - Schedule of Estimated Amortization Expense for Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Composition of certain financial statement captions - Schedule of Goodwill Roll-Forward (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Composition of certain financial statement captions - Schedule of Accounts Receivable (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Composition of certain financial statement captions - Schedule of Allowance for Doubtful Accounts (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Composition of certain financial statement captions - Schedule of Prepaid and Other Current Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Revenue and contract costs - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Revenue and contract costs - Schedule of Rollforward of Contract Assets and Contract Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Revenue and contract costs - Schedule of Deferred Contract Acquisition Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Debt and finance leases - Schedule of Outstanding Finance Lease Liabilities and Other Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Debt and finance leases - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Debt and finance leases - Schedule of Maturities of Finance Leases and Other Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Debt and finance leases - Schedule of Maturities of Finance Leases and Other Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Stockholders' equity - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Stockholders' equity - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Equity-based compensation - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Equity-based compensation - Schedule of Stock - Based Compensation by Type of Award (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Equity-based compensation - Schedule of Stock-Based Compensation in Financial Statements (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Equity-based compensation - Schedule of Stock-Based Compensation in Financial Statements (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Equity-based compensation - Schedule of Restricted Stock Unit Activity and Market-Based Performance Stock Unit Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Equity-based compensation - Schedule of Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Fair value measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Fair value measurements - Schedule of Reconciliation of Changes in Level 3 Instruments Measured on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Fair value measurements - Schedule of Activity Related to Aggregate Fair Value of Amounts Due to Health Care Providers (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Fair value measurements - Schedule of Range and Weighted‑Average of Significant Unobservable Inputs Used in Level 3 Fair Value Measurements by Asset (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Fair value measurements - Schedule of Range and Weighted‑Average of Significant Unobservable Inputs Used in Level 3 Fair Value Measurements by Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Leases - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Leases - Schedule of Lease Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Leases - Schedule of Maturities of Operating and Finance Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Leases - Schedule of Maturities of Operating and Finance Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Leases - Schedule of Supplemental Cash Flow Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Commitments and contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Income taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Net income (loss) per share attributable to common stockholders - Schedule of Earnings Per Share, Basic and Diluted (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Net income (loss) per share attributable to common stockholders - Schedule of Shares Excluded from Computation of Diluted Net Income (Loss) Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Related party transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Segments and geographic information - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Segments and geographic information - Schedule of Expenditures on Long-Lived Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Segments and geographic information - Schedule of Other Quantitative Segment Disclosures (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Derivative instruments and hedging activities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Derivative instruments and hedging activities - Schedule of Fair Values Of Outstanding Derivative Foreign Currency Forward Contract (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Derivative instruments and hedging activities - Schedule of Effect of Derivative Instruments on the Company’s Consolidated Statements of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Derivative instruments and hedging activities - Schedule of Pre-tax Gains (Losses) Associated with Cash Flow Hedges (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Acquisition - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Acquisition - Schedule of Business Combination Pro Forma Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Securitization program and variable interest entities (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Subsequent events (Details) link:presentationLink link:calculationLink link:definitionLink