Goodwill and Acquired Intangibles - Acquired Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Finite-lived, gross carrying amount	$ 3,380	$ 3,635
Finite-lived, accumulated amortization	(1,561)	(1,510)
Finite-lived, net carrying amount	1,819	2,125
Indefinite-lived, carrying amount	887	887
Intangible assets, gross (excluding goodwill), total	4,267	4,522
Total acquired intangibles, net carrying amount	2,706	3,012
Customer programs
Finite-Lived Intangible Assets [Line Items]
Finite-lived, gross carrying amount	3,184	3,184
Finite-lived, accumulated amortization	(1,431)	(1,199)
Finite-lived, net carrying amount	1,753	1,985
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived, gross carrying amount	120	366
Finite-lived, accumulated amortization	(96)	(287)
Finite-lived, net carrying amount	24	79
Other
Finite-Lived Intangible Assets [Line Items]
Finite-lived, gross carrying amount	76	85
Finite-lived, accumulated amortization	(34)	(24)
Finite-lived, net carrying amount	$ 42	$ 61