Goodwill and Other Intangible Assets (Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Roll Forward]
Balance at beginning of period	$ 5,058	$ 4,082	$ 3,260
Goodwill related to acquisitions	83	999	805
Foreign currency translation and other adjustments	13	(23)	17
Balance at end of period	5,154	5,058	4,082
Goodwill accumulated impairment loss	1,557	1,557	1,557
General rentals
Goodwill [Roll Forward]
Balance at beginning of period	4,342	3,607	2,797
Goodwill related to acquisitions	10	752	797
Foreign currency translation and other adjustments	10	(17)	13
Balance at end of period	4,362	4,342	3,607
Trench, power and fluid solutions
Goodwill [Roll Forward]
Balance at beginning of period	716	475	463
Goodwill related to acquisitions	73	247	8
Foreign currency translation and other adjustments	3	(6)	4
Balance at end of period	$ 792	$ 716	$ 475