Supplemental Disclosures to the Consolidated Statements of Cash Flows (Supplemental Operating and Financing Cash Flow Items) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Operating:
Contingent consideration payments for prior year acquisitions	$ (14)	$ (14)
Acquisition/disposition related net charges for adjustments	9	6
Adjustments and payments related to contingent consideration	(5)	(8)
Financing:
Contingent consideration for prior year acquisitions	(5)	(12)
Deferred consideration related to prior year acquisitions	(27)	(3)
Payments of deferred and contingent consideration for acquisitions	$ (32)	$ (15)