Goodwill and Other Intangible Assets (Goodwill) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 5,940
Goodwill related to acquisitions	910
Foreign currency translation and other adjustments	3
Ending balance	6,853
Goodwill accumulated impairment loss	1,557
General rentals
Goodwill [Roll Forward]
Beginning balance	4,775
Goodwill related to acquisitions	3
Foreign currency translation and other adjustments	(3)
Ending balance	4,775
Specialty
Goodwill [Roll Forward]
Beginning balance	1,165
Goodwill related to acquisitions	907
Foreign currency translation and other adjustments	6
Ending balance	$ 2,078