Goodwill and Other Intangible Assets (Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Balance at beginning of period	$ 6,026	$ 5,528	$ 5,168
Goodwill related to acquisitions	(98)	529	371
Foreign currency translation and other adjustments	12	(31)	(11)
Balance at end of period	5,940	6,026	5,528
Goodwill accumulated impairment loss	1,557	1,557	1,557
General rentals
Goodwill [Roll Forward]
Balance at beginning of period	4,980	4,445	4,368
Goodwill related to acquisitions	(209)	549	76
Foreign currency translation and other adjustments	4	(14)	1
Balance at end of period	4,775	4,980	4,445
Specialty
Goodwill [Roll Forward]
Balance at beginning of period	1,046	1,083	800
Goodwill related to acquisitions	111	(20)	295
Foreign currency translation and other adjustments	8	(17)	(12)
Balance at end of period	$ 1,165	$ 1,046	$ 1,083