Goodwill, Customer Relationships and Other Intangible Assets - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) reporting_unit	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Oct. 31, 2023	Jun. 30, 2023	Oct. 31, 2022	Oct. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, gross (including goodwill)	$ 9,000
Number of reporting units | reporting_unit	1
Estimated fair value in excess of carrying value of equity (as a percent)					11.00%	24.00%	42.00%
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 67	$ 79	$ 176
Maximum | Measurement Input, EBITDA Multiple
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input				8.4	10.5
Maximum | Measurement Input, Revenue Multiple
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input				3.5	4.3
Minimum | Measurement Input, EBITDA Multiple
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input				4.8	4.6
Minimum | Measurement Input, Revenue Multiple
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input				1.5	1.5
Capitalized software
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets, weighted average useful life	3 years