Acquisitions and Divestitures (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($) item
Business Acquisition
Non-cash acquisition consideration	$ 25	$ 135
Aggregate acquisitions [Member]
Business Acquisition
Number of business acquired | item	12	13	11
Total consideration, net of cash acquired	$ 182	$ 507	$ 94
Business acquisitions cash payments	157	372	73
Non-cash acquisition consideration	25	135
Promissory notes receivable converted into equity		67
Other consideration			21
Contingent liability payments	13		$ 3
Contingent consideration paid for acquisitions closed in previous year	$ 6	$ 5