Supplemental Disclosures to the Consolidated Statements of Cash Flows (Supplemental Operating and Financing Cash Flow Items) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating:
Contingent consideration payments for prior year acquisitions	$ (41)	$ (38)	$ (49)
Receipt of contingent consideration for dispositions	1	0	19
Acquisition/disposition related net charges for adjustments	29	49	57
Adjustments and payments related to contingent consideration	(11)	11	27
Financing:
Contingent consideration for prior year acquisitions	(135)	(32)	(28)
Deferred consideration related to prior year acquisitions	(67)	(126)	(89)
Payments of deferred and contingent consideration for acquisitions	(202)	(158)	(117)
Receipts of contingent consideration for dispositions	$ 2	$ 3	$ 71