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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Operating Loss Carryforwards [Line Items] |  |  |  |
(Benefit) provision for income taxes | $ 77 | $ (322) | $ 121 | $ (248)
Effective tax rate | 19.70% | 16.10% | 12.00% | 15.60%
Liabilities for uncertain tax positions | $ 52 |  | $ 52 |
TRANZACT [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Deferred tax (benefit) |  | $ (56) |  |
Valuation allowance on expected tax loss on disposal |  | $ 37 |  | $ 37
Minimum [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Expected decrease in liability for uncertain tax position | 1 |  | 1 |
Maximum [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Expected decrease in liability for uncertain tax position | $ 24 |  | $ 24 |

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