Goodwill - Changes in Goodwill (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)
Goodwill [Line Items]
Balance at January 1, 2024	$ 3,389
Acquisitions	90
Balance at March 31, 2024	3,479
East Group
Goodwill [Line Items]
Balance at January 1, 2024	764
Acquisitions	0
Balance at March 31, 2024	764
West Group
Goodwill [Line Items]
Balance at January 1, 2024	2,625
Acquisitions	90
Balance at March 31, 2024	$ 2,715