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Software, including software developed for internal use Software and Software Development Costs [Member] Document Fiscal Period Focus Document Fiscal Period Focus Stock-based compensation expense (employee) Adjustments To Additional Paid In Capital, Share Based Compensation, Employee Amount of increase in additional paid-in capital (APIC) resulting from employee stock-based compensation expense. 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[Member] C2i Genomics, Inc. 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Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Revaluation of acquisition-related contingent consideration Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Increase (Decrease) Shares used to compute earnings (loss) per common share: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Employee stock purchase plan Common stock available for the Employee Stock Purchase Plan Employee Stock [Member] Revenue: Revenues [Abstract] Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Selling and marketing Selling and marketing Selling and Marketing Expense Financial Instruments [Domain] Financial Instruments [Domain] Gross deferred tax liabilities Deferred Tax Liabilities, Gross Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Other 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Share-Based Payment Arrangement, Percent Discount rate Operating Lease, Weighted Average Discount Rate, Percent Schedule of Activity Under the Company's Stock Incentive Plans Share-Based Payment Arrangement, Option, Activity [Table Text Block] Maximum value of awards available to be received per calendar year by existing non-employee directors Share-Based Compensation Arrangement By Share-Based Payment Award, Maximum Value Of Shares Per Existing Non-Employee Directors Share-Based Compensation Arrangement By Share-Based Payment Award, Maximum Value Of Shares Per Existing Non-Employee Directors Basic (in shares) Denominator for basic EPS — weighted average shares (in shares) Weighted Average Number of Shares Outstanding, Basic Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Unrecognized tax benefits which would affect effective tax rate if recognized Unrecognized Tax Benefits that Would Impact Effective Tax Rate Schedule of Computation of Basic and Diluted Net Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Options vested and exercisable at the end of the period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Segment Reporting [Abstract] Cost of revenue Cost of revenue Cost of Revenue Operating lease expense Operating Lease, Expense Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in USD per share) Par value of shares of common stock (in USD per share) Common Stock, Par or Stated Value Per Share Missouri MISSOURI Carried Forward Indefinitely Indefinitely Carried Forward [Member] Indefinitely Carried Forward Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Accounts receivable Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net Effect of cross-border tax laws Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount Use of Estimates Use of Estimates, Policy [Policy Text Block] Compensation expense Cost Of Revenue, Compensation Expense Cost Of Revenue, Compensation Expense ROU assets Deferred Tax Liabilities, Right-Of-Use Assets Deferred Tax Liabilities, Right-Of-Use Assets Insider Trading Arrangements [Line Items] Canceled (in USD per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Total liabilities Liabilities Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Operating lease liabilities Disposal Group, Including Discontinued Operation, Operating Lease, Liability, Noncurrent Disposal Group, Including Discontinued Operation, Operating Lease, Liability, Noncurrent Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Gross increases—current period tax position Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] UnitedHealthcare United Healthcare [Member] Represents information pertaining to United Healthcare, a significant third-party payer. Deferred tax liabilities: Components of Deferred Tax Liabilities [Abstract] Biopharmaceutical revenue Biopharmaceutical And Other - Biopharmaceutical Revenue [Member] Biopharmaceutical And Other - Biopharmaceutical Revenue Proceeds from maturity of short-term investments Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Short-term investments Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member]