| Current Federal Tax Expense (Benefit) | -52.00M | 2025-01-01 → 2025-12-31 |
| Current State and Local Tax Expense (Benefit) | 32.00M | 2025-01-01 → 2025-12-31 |
| Current Foreign Tax Expense (Benefit) | 121.00M | 2025-01-01 → 2025-12-31 |
| Current Income Tax Expense (Benefit) | 263.00M | 2025-01-01 → 2025-12-31 |
| Deferred Federal Income Tax Expense (Benefit) | 107.00M | 2025-01-01 → 2025-12-31 |
| Accounts Payable, Other, Current | 986.00M | as of 2025-12-31 |
| Deferred State and Local Income Tax Expense (Benefit) | 7.00M | 2025-01-01 → 2025-12-31 |
| Deferred Foreign Income Tax Expense (Benefit) | -49.00M | 2025-01-01 → 2025-12-31 |
| Operating Lease, Liability, Current | 125.00M | as of 2025-12-31 |
| Accrued Sales Commission, Current | 108.00M | as of 2025-12-31 |
| Prepaid Expense and Other Assets, Current | 595.00M | as of 2025-12-31 |
| Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization | 26.00M | as of 2025-12-31 |
| Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization | 26.00M | as of 2025-12-31 |
| Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization | 0 | as of 2025-12-31 |
| Accrued Employee Benefits, Current | 25.00M | as of 2025-12-31 |
| Share-based Payment Arrangement, Expense | 153.00M | 2025-01-01 → 2025-12-31 |
| Other Assets, Miscellaneous, Noncurrent | 59.00M | as of 2025-12-31 |
| Liability, Pension and Other Postretirement and Postemployment Benefits, Current | 61.00M | as of 2025-12-31 |
| Other Employee-related Liabilities, Current | 62.00M | as of 2025-12-31 |
| Undistributed Earnings, Basic | 37.40B | 2025-01-01 → 2025-12-31 |
| Deferred Compensation Plan Assets | 119.00M | as of 2025-12-31 |
| Share-based Payment Arrangement, Expense, Tax Benefit | 23.00M | 2025-01-01 → 2025-12-31 |
| Other Sundry Liabilities, Current | 52.00M | as of 2025-12-31 |
| Contract with Customer, Performance Obligation Satisfied in Previous Period | 5.00M | 2025-01-01 → 2025-12-31 |
| EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmount | 2.00M | 2025-01-01 → 2025-12-31 |
| Other Sundry Liabilities, Noncurrent | 62.00M | as of 2025-12-31 |
| Property, Plant and Equipment, Additions | 229.00M | 2025-01-01 → 2025-12-31 |
| Property, Plant and Equipment, Disposals | 83.00M | 2025-01-01 → 2025-12-31 |
| Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred | 2.00M | 2025-01-01 → 2025-12-31 |
| Restructuring Reserve, Settled without Cash | 0 | 2025-01-01 → 2025-12-31 |
| Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent | 3.00M | 2025-01-01 → 2025-12-31 |
| Accumulated Depreciation, Depletion and Amortization, Sale or Disposal of Property, Plant and Equipment | 78.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Contingency, Amount | -62.00M | 2025-01-01 → 2025-12-31 |
| Other Accrued Liabilities, Noncurrent | 59.00M | as of 2025-12-31 |
| Dividends, Common Stock | 360.00M | 2025-01-01 → 2025-12-31 |
| Finite Lived Intangible Assets, Foreign Currency Translation Gain (Loss) | -24.00M | 2025-01-01 → 2025-12-31 |
| Interest and Other Income | 192.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | -1.00M | 2025-01-01 → 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year One | 172.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Two | 154.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Three | 138.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Four | 117.00M | as of 2025-12-31 |
| Revenue, Remaining Performance Obligation, Amount | 1.55B | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Five | 100.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, after Year Five | 460.00M | as of 2025-12-31 |
| Long-Lived Assets | 1.18B | as of 2025-12-31 |
| Deferred Tax Assets, Operating Loss Carryforwards | 37.00M | as of 2025-12-31 |
| Goodwill, Acquired During Period | 9.00M | 2025-01-01 → 2025-12-31 |
| Goodwill, Foreign Currency Translation Gain (Loss) | -130.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Capital Loss Carryforwards | 8.00M | as of 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits | 160.00M | as of 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost | 32.00M | as of 2025-12-31 |
| Goodwill, Gross | 10.21B | as of 2025-12-31 |
| Operating Lease, Cost | 122.00M | 2025-01-01 → 2025-12-31 |
| Goodwill, Impaired, Accumulated Impairment Loss | 1.27B | as of 2025-12-31 |
| Short-term Lease, Cost | 1.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits | 86.00M | as of 2025-12-31 |
| Variable Lease, Cost | 33.00M | 2025-01-01 → 2025-12-31 |
| Lease, Cost | 124.00M | 2025-01-01 → 2025-12-31 |
| Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 66.00M | 2025-01-01 → 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year One | 2.00M | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year Two | 0 | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year Three | 0 | as of 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Deferred Rent | 82.00M | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year Four | 0 | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year Five | 0 | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, after Year Five | 0 | as of 2025-12-31 |
| Finance Lease, Liability, Payment, Due | 2.00M | as of 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other | 65.00M | as of 2025-12-31 |
| Deferred Tax Assets, Derivative Instruments | 2.00M | as of 2025-12-31 |
| Finance Lease, Liability, Undiscounted Excess Amount | 0 | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year One | 140.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Two | 121.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Three | 112.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Four | 101.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Five | 85.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, after Year Five | 109.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid | 668.00M | as of 2025-12-31 |
| Deferred Tax Asset, Interest Carryforward | 368.00M | as of 2025-12-31 |
| Deferred Tax Assets, Gross | 840.00M | as of 2025-12-31 |
| Deferred Tax Assets, Valuation Allowance | 39.00M | as of 2025-12-31 |
| Deferred Tax Assets, Net of Valuation Allowance | 801.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 71.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Gross | 675.00M | as of 2025-12-31 |
| Deferred Tax Assets, Net | 126.00M | as of 2025-12-31 |
| Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 11.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Liabilities, Property, Plant and Equipment | 32.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Prepaid Expenses | 95.00M | as of 2025-12-31 |
| Defined Benefit Plan, Expected Future Benefit Payment, Year One | 422.00M | as of 2025-12-31 |
| Defined Benefit Plan, Expected Future Benefit Payment, Year Two | 419.00M | as of 2025-12-31 |
| Defined Benefit Plan, Expected Future Benefit Payment, Year Three | 430.00M | as of 2025-12-31 |
| Defined Benefit Plan, Expected Future Benefit Payment, Year Four | 444.00M | as of 2025-12-31 |
| Defined Benefit Plan, Expected Future Benefit Payment, Year Five | 453.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Undistributed Foreign Earnings | 32.00M | as of 2025-12-31 |
| Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years | 2.38B | as of 2025-12-31 |
| Deferred Tax Liabilities, Tax Deferred Income | 40.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Intangible Assets | 402.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Net | 41.00M | as of 2025-12-31 |
| Finite-lived Intangible Assets Acquired | 14.00M | 2025-01-01 → 2025-12-31 |
| Long-Term Debt, Maturity, Year One | 828.00M | as of 2025-12-31 |
| Defined Contribution Plan, Cost | 170.00M | 2025-01-01 → 2025-12-31 |
| Long-Term Debt, Maturity, Year Two | 1.00B | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year Three | 831.00M | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year Four | 930.00M | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year Five | 190.00M | as of 2025-12-31 |
| Long-Term Debt, Maturity, after Year Five | 5.90B | as of 2025-12-31 |
| Reclassification from AOCI, Current Period, Tax | -25.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits | 38.00M | as of 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions | 16.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | 45.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions | 2.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | 16.00M | 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 | 1.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Income Tax Penalties Accrued | 2.00M | as of 2025-12-31 |
| Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 4.00M | as of 2025-12-31 |
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | -1.00M | as of 2025-12-31 |
| Billed Contracts Receivable | 1.83B | as of 2025-12-31 |
| Income Taxes Receivable, Current | 241.00M | as of 2025-12-31 |
| Insurance Settlements Receivable, Noncurrent | 59.00M | as of 2025-12-31 |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value | 14.00M | as of 2025-12-31 |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings | 1.00M | 2025-01-01 → 2025-12-31 |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) | 2.00M | 2025-01-01 → 2025-12-31 |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases | 5.00M | 2025-01-01 → 2025-12-31 |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements | 33.00M | 2025-01-01 → 2025-12-31 |