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Segment and Related Information - Goodwill (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |
Goodwill, Beginning Balance | $ 9,028 | $ 8,994
Acquired goodwill | 325 | 76
Divested goodwill |  | (47)
Foreign currency translation and other | (30) | 5
Goodwill, Ending Balance | 9,323 | 9,028
Goodwill post-closing adjustment increase (decrease) |  | (26)
East Tier [Member] |  |
Segment Reporting Information [Line Items] |  |
Goodwill, Beginning Balance | 5,120 | 5,101
Acquired goodwill | 92 | 27
Divested goodwill |  | (11)
Foreign currency translation and other | (30) | 3
Goodwill, Ending Balance | 5,182 | 5,120
West Tier [Member] |  |
Segment Reporting Information [Line Items] |  |
Goodwill, Beginning Balance | 3,833 | 3,823
Acquired goodwill | 24 | 15
Divested goodwill |  | (7)
Foreign currency translation and other |  | 2
Goodwill, Ending Balance | 3,857 | 3,833
Other [Member] |  |
Segment Reporting Information [Line Items] |  |
Goodwill, Beginning Balance | 75 | 70
Acquired goodwill | 209 | 34
Divested goodwill |  | (29)
Foreign currency translation and other |  |
Goodwill, Ending Balance | $ 284 | $ 75

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