Goodwill and Acquired Intangibles - Acquired Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Finite-lived, gross carrying amount	$ 3,352	$ 3,352
Finite-lived, accumulated amortization	(2,027)	(1,780)
Finite-lived, net carrying amount	1,325	1,572
Indefinite-lived, carrying amount	887	887
Intangible assets, gross (excluding goodwill), total	4,239	4,239
Total acquired intangibles, net carrying amount	$ 2,212	2,459
Minimum
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets are amortized	3 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets are amortized	20 years
Customer programs
Finite-Lived Intangible Assets [Line Items]
Finite-lived, gross carrying amount	$ 3,186	3,186
Finite-lived, accumulated amortization	(1,897)	(1,664)
Finite-lived, net carrying amount	$ 1,289	1,522
Customer programs | Minimum
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets are amortized	9 years
Customer programs | Maximum
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets are amortized	20 years
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived, gross carrying amount	$ 94	94
Finite-lived, accumulated amortization	(84)	(78)
Finite-lived, net carrying amount	$ 10	16
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets are amortized	4 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets are amortized	10 years
Other
Finite-Lived Intangible Assets [Line Items]
Finite-lived, gross carrying amount	$ 72	72
Finite-lived, accumulated amortization	(46)	(38)
Finite-lived, net carrying amount	$ 26	$ 34
Other | Minimum
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets are amortized	3 years
Other | Maximum
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets are amortized	10 years