Goodwill, Customer Relationships and Other Intangible Assets - Additional Information (Details)			3 Months Ended		12 Months Ended
	Oct. 31, 2023 USD ($) reporting_unit	Oct. 31, 2022 USD ($) reporting_unit	Dec. 31, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 USD ($) segement	Dec. 31, 2024 USD ($) reporting_unit	Dec. 31, 2024 USD ($) segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, gross (including goodwill)			$ 15,400,000,000		$ 15,400,000,000	$ 15,400,000,000	$ 15,400,000,000	$ 15,400,000,000	$ 15,400,000,000	$ 15,800,000,000
Impairment of indefinite-lived intangible assets						0				0	$ 0
Number of reportable segments							2		2
Number of reporting units | reporting_unit	3	4						3
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	$ 1,900,000,000		$ 0	$ 8,800,000,000		0				10,693,000,000	3,271,000,000
Control premium (as a percent)	2.00%	59.00%
Acquired finite-lived intangible assets, weighted average useful life (in years)					5 years
Amortization of intangible assets						$ 1,100,000,000				$ 1,100,000,000	$ 1,100,000,000
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets, weighted average useful life (in years)					6 years
Capitalized Software
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets, weighted average useful life (in years)					4 years
Disposal Group, Held-for-sale, Not Discontinued Operations | EMEA Business
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment		$ 43,000,000
NA Business
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment		3,200,000,000
Mass Markets
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment		$ 0
Goodwill, impairment (as a percent)		97.00%
EMEA
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment		$ 0
Goodwill, impairment (as a percent)		171.00%
APAC
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment		$ 0
Goodwill, impairment (as a percent)		101.00%
Measurement Input, Revenue Multiple
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment, measurement input (as a percent)		2.5
Measurement Input, Revenue Multiple | Minimum
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment, measurement input (as a percent)	1.5	1.8		1.5
Measurement Input, Revenue Multiple | Maximum
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment, measurement input (as a percent)	3.5	4.6		4.3
Measurement Input, EBITDA Multiple
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment, measurement input (as a percent)		5.5
Measurement Input, EBITDA Multiple | Minimum
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment, measurement input (as a percent)	4.8	4.7		4.6
Measurement Input, EBITDA Multiple | Maximum
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment, measurement input (as a percent)	8.4	10.8		10.5