Revenues - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Segment Reporting Information [Line Items]
Contract liabilities	$ 167		$ 119
Contract with Customer, Liability	124		80
Increase in contract assests	219
Increase in Contract liabilities	50
Contract with Customer, Liability, Noncurrent	42		39
Deferred Costs	137		119
Incentive and Profit-sharing Contingent Commissions
Segment Reporting Information [Line Items]
Deferred Revenue, Revenue Recognized	24	$ 17
Cost to Fulfill
Segment Reporting Information [Line Items]
Deferred Costs	193		$ 145
Business acquisition deferrals costs	57
Capitalized Contract Cost, Amortization	$ 13
Cost to Obtain
Segment Reporting Information [Line Items]
Capitalized contract cost, amortization period	15 years
Deferred Costs	$ 26
Capitalized Contract Cost, Amortization	$ 8