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Goodwill - Summary of Changes in the Carrying Amount of Goodwill by Segment (Parenthetical) (Detail) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
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Goodwill [Line Items] |  |  |
Accumulated goodwill impairment | $ 29,580 | $ 28,300 | $ 27,600

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