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Business Combinations, Goodwill and Acquired Intangible - Acquired Intangible Assets (Detail) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Acquired Finite Lived Intangible Assets [Line Items] |  |
Intangible assets subject to amortization, Cost Basis | $ 377 | $ 377
Intangible assets subject to amortization, Accumulated Impairment and Amortization | (352) | (342)
Intangible assets subject to amortization, Net | 25 | 35
Customer, Services and Lending Relationships [Member] |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |
Intangible assets subject to amortization, Cost Basis | 218 | 218
Intangible assets subject to amortization, Accumulated Impairment and Amortization | (212) | (207)
Intangible assets subject to amortization, Net | 6 | 11
Software and Technology [Member] |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |
Intangible assets subject to amortization, Cost Basis | 119 | 119
Intangible assets subject to amortization, Accumulated Impairment and Amortization | (110) | (108)
Intangible assets subject to amortization, Net | 9 | 11
Trade Names and Trademarks [Member] |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |
Intangible assets subject to amortization, Cost Basis | 40 | 40
Intangible assets subject to amortization, Accumulated Impairment and Amortization | (30) | (27)
Intangible assets subject to amortization, Net | $ 10 | $ 13

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