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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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