| Current Federal Tax Expense (Benefit) | 67.70M | 2025-01-01 → 2025-12-31 |
| Current State and Local Tax Expense (Benefit) | 70.40M | 2025-01-01 → 2025-12-31 |
| Current Foreign Tax Expense (Benefit) | 91.00M | 2025-01-01 → 2025-12-31 |
| Capitalized Computer Software, Net | 131.00M | as of 2025-12-31 |
| Deferred Federal Income Tax Expense (Benefit) | 188.50M | 2025-01-01 → 2025-12-31 |
| Capitalized Computer Software, Additions | 57.30M | 2025-01-01 → 2025-12-31 |
| Deferred State and Local Income Tax Expense (Benefit) | -8.30M | 2025-01-01 → 2025-12-31 |
| Deferred Foreign Income Tax Expense (Benefit) | -9.50M | 2025-01-01 → 2025-12-31 |
| Operating Lease, Liability, Current | 48.30M | as of 2025-12-31 |
| Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | 700.00K | 2025-01-01 → 2025-12-31 |
| Prepaid Expense and Other Assets, Current | 235.80M | as of 2025-12-31 |
| Other Accrued Liabilities, Current | 214.10M | as of 2025-12-31 |
| Share-based Payment Arrangement, Expense | 166.30M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 406.60M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 52.30M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Expense, Tax Benefit | 24.70M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount | 11.60M | 2025-01-01 → 2025-12-31 |
| EffectiveIncomeTaxRateReconciliationCrossBorderOtherAmount | 2.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount | 32.00M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | 59.10M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount | 6.90M | 2025-01-01 → 2025-12-31 |
| Guaranty Liabilities | 42.60M | as of 2025-12-31 |
| Letters of Credit Outstanding, Amount | 8.10M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Nondeductible Expense, Restructuring Charges, Amount | -25.80M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount | -14.80M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount | 10.40M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Contingency, Amount | -3.60M | 2025-01-01 → 2025-12-31 |
| Dividends, Common Stock | 365.50M | 2025-01-01 → 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year One | 833.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Two | 791.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Three | 751.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Four | 680.00M | as of 2025-12-31 |
| Revenue, Remaining Performance Obligation, Amount | 5.20B | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Five | 671.00M | as of 2025-12-31 |
| Intangible Assets, Gross (Excluding Goodwill) | 14.09B | as of 2025-12-31 |
| Capitalized Contract Cost, Amortization | 36.70M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Operating Loss Carryforwards | 104.50M | as of 2025-12-31 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | 172.40M | as of 2025-12-31 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | 86.50M | 2025-01-01 → 2025-12-31 |
| Goodwill, Acquired During Period | 2.02B | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Credit Carryforwards, Research | 17.10M | as of 2025-12-31 |
| Stock Repurchased During Period, Value | 502.50M | 2025-01-01 → 2025-12-31 |
| Goodwill, Other Increase (Decrease) | -40.50M | 2025-01-01 → 2025-12-31 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | 169.50M | as of 2025-12-31 |
| Goodwill, Translation and Purchase Accounting Adjustments | 45.00M | 2025-01-01 → 2025-12-31 |
| Operating Lease, Cost | 60.10M | 2025-01-01 → 2025-12-31 |
| Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 77.50M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals | 250.40M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year One | 56.10M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Two | 49.70M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Three | 40.60M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Four | 31.30M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Five | 23.90M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, after Year Five | 65.50M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid | 267.10M | as of 2025-12-31 |
| Deferred Tax Asset, Interest Carryforward | 49.30M | as of 2025-12-31 |
| Deferred Tax Assets, Valuation Allowance | 10.90M | as of 2025-12-31 |
| Deferred Tax Assets, Net of Valuation Allowance | 629.40M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 33.60M | as of 2025-12-31 |
| Deferred Tax Liabilities, Property, Plant and Equipment | 14.70M | as of 2025-12-31 |
| Deferred Tax Liabilities, Undistributed Foreign Earnings | 12.60M | as of 2025-12-31 |
| Deferred Tax Liabilities, Intangible Assets | 2.11B | as of 2025-12-31 |
| Deferred Tax Liabilities, Parent's Basis in Discontinued Operation | 241.50M | as of 2025-12-31 |
| Deferred Tax Liabilities, Net | 2.44B | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year One | 705.80M | as of 2025-12-31 |
| Defined Contribution Plan, Cost | 51.90M | 2025-01-01 → 2025-12-31 |
| Long-Term Debt, Maturity, Year Two | 1.55B | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year Three | 1.30B | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year Four | 1.20B | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year Five | 1.10B | as of 2025-12-31 |
| Long-Term Debt, Maturity, after Year Five | 3.50B | as of 2025-12-31 |
| Unrecognized Tax Benefits | 24.40M | as of 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions | 3.60M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | 0 | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions | 700.00K | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | 0 | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 7.80M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 24.40M | as of 2025-12-31 |
| Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit | 6.00M | as of 2025-12-31 |
| Unbilled Contracts Receivable | 124.00M | as of 2025-12-31 |
| Income (Loss) from Continuing Operations before Income Taxes, Domestic | 1.59B | 2025-01-01 → 2025-12-31 |
| Income (Loss) from Continuing Operations before Income Taxes, Foreign | 347.90M | 2025-01-01 → 2025-12-31 |