| Accounts Payable, Trade, Current | 192.00M | as of 2025-12-31 |
| Current Federal Tax Expense (Benefit) | 138.00M | 2025-01-01 → 2025-12-31 |
| Current State and Local Tax Expense (Benefit) | 41.00M | 2025-01-01 → 2025-12-31 |
| Current Foreign Tax Expense (Benefit) | 141.00M | 2025-01-01 → 2025-12-31 |
| Current Income Tax Expense (Benefit) | 320.00M | 2025-01-01 → 2025-12-31 |
| Capitalized Computer Software, Accumulated Amortization | 1.81B | as of 2025-12-31 |
| Capitalized Computer Software, Net | 2.88B | as of 2025-12-31 |
| Deferred Federal Income Tax Expense (Benefit) | -23.00M | 2025-01-01 → 2025-12-31 |
| Deferred State and Local Income Tax Expense (Benefit) | 8.00M | 2025-01-01 → 2025-12-31 |
| Capitalized Computer Software, Impairments | 0 | 2025-01-01 → 2025-12-31 |
| Deferred Foreign Income Tax Expense (Benefit) | -40.00M | 2025-01-01 → 2025-12-31 |
| Operating Lease, Liability, Current | 71.00M | as of 2025-12-31 |
| Prepaid Expense and Other Assets, Current | 959.00M | as of 2025-12-31 |
| Other Accrued Liabilities, Current | 822.00M | as of 2025-12-31 |
| Accrued Salaries, Current | 448.00M | as of 2025-12-31 |
| Share-based Payment Arrangement, Expense | 0 | 2025-01-01 → 2025-12-31 |
| Income Tax Expense (Benefit), Intraperiod Tax Allocation | 118.00M | 2025-01-01 → 2025-12-31 |
| Settlement Liabilities, Current | 549.00M | as of 2025-12-31 |
| Deferred Compensation Plan Assets | 159.00M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 247.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 39.00M | 2025-01-01 → 2025-12-31 |
| EffectiveIncomeTaxRateReconciliationFdiiAmount | 28.00M | 2025-01-01 → 2025-12-31 |
| EffectiveIncomeTaxRateReconciliationGiltiAmount | 18.00M | 2025-01-01 → 2025-12-31 |
| EffectiveIncomeTaxRateReconciliationCrossBorderOtherAmount | 14.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount | 15.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount | 39.00M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | 197.00M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount | 0 | 2025-01-01 → 2025-12-31 |
| Contract with Customer, Liability, Revenue Recognized | 761.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount | 1.00M | 2025-01-01 → 2025-12-31 |
| Equity Securities without Readily Determinable Fair Value, Amount | 193.00M | as of 2025-12-31 |
| Settlement Assets, Current | 515.00M | as of 2025-12-31 |
| Noncontrolling Interest, Decrease from Deconsolidation | 0 | 2025-01-01 → 2025-12-31 |
| SegmentExpenditureAdditionToLongLivedAssets | 1.17B | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Contingency, Amount | 10.00M | 2025-01-01 → 2025-12-31 |
| Dividends, Common Stock, Cash | 845.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount | -17.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount | 6.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Amount | 17.00M | 2025-01-01 → 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year One | 255.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Two | 217.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Three | 189.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Four | 120.00M | as of 2025-12-31 |
| Revenue, Remaining Performance Obligation, Amount | 23.50B | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Five | 32.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, after Year Five | 120.00M | as of 2025-12-31 |
| Treasury Stock, Value, Acquired, Cost Method | 1.29B | 2025-01-01 → 2025-12-31 |
| Intangible Assets, Gross (Excluding Goodwill) | 2.69B | as of 2025-12-31 |
| Capitalized Contract Cost, Amortization | 398.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Operating Loss Carryforwards | 490.00M | as of 2025-12-31 |
| Goodwill, Acquired During Period | 337.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Capital Loss Carryforwards | 136.00M | as of 2025-12-31 |
| Goodwill, Translation and Purchase Accounting Adjustments | 165.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits | 97.00M | as of 2025-12-31 |
| Operating Lease, Cost | 77.00M | 2025-01-01 → 2025-12-31 |
| Variable Lease, Cost | 26.00M | 2025-01-01 → 2025-12-31 |
| Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 71.00M | 2025-01-01 → 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year One | 80.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Two | 54.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Three | 41.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Four | 29.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Five | 23.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, after Year Five | 63.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid | 290.00M | as of 2025-12-31 |
| Deferred Tax Assets, Equity Method Investments | 363.00M | as of 2025-12-31 |
| Deferred Tax Assets, Other | 292.00M | as of 2025-12-31 |
| Deferred Tax Assets, Gross | 1.38B | as of 2025-12-31 |
| Deferred Tax Assets, Valuation Allowance | 914.00M | as of 2025-12-31 |
| Deferred Tax Assets, Net of Valuation Allowance | 464.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 41.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Gross | 1.65B | as of 2025-12-31 |
| Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | -140.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Liabilities, Deferred Expense | 298.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Goodwill and Intangible Assets | 695.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Other | 161.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Net | 1.19B | as of 2025-12-31 |
| Defined Contribution Plan, Cost | 125.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits | 60.00M | as of 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | 13.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions | 27.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | 2.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 1.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Interest on Income Taxes Expense | 2.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 51.00M | as of 2025-12-31 |
| Income (Loss) from Continuing Operations before Income Taxes, Domestic | 864.00M | 2025-01-01 → 2025-12-31 |
| Income (Loss) from Continuing Operations before Income Taxes, Foreign | 312.00M | 2025-01-01 → 2025-12-31 |
| Other Receivables, Net, Current | 432.00M | as of 2025-12-31 |
| Income (Loss) from Continuing Operations before Interest Expense, Interest Income, Income Taxes, Noncontrolling Interests, Net | 385.00M | 2025-01-01 → 2025-12-31 |
| APIC, Share-based Payment Arrangement, Increase for Cost Recognition | 180.00M | 2025-01-01 → 2025-12-31 |