Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues:
Revenues, Topic 842	$ 1,970	$ 1,518
Revenues, Topic 606	554	539
Revenues, Total	2,524	2,057
Equipment rentals
Revenues:
Revenues, Topic 842	1,970	1,518
Revenues, Topic 606	205	149
Revenues, Total	2,175	1,667
Owned equipment rentals
Revenues:
Owned equipment rentals, Topic 842	1,797	1,405
Revenues, Total	1,797	1,405
Re-rent revenue
Revenues:
Re-rent revenue, Topic 842	49	32
Revenues, Total	49	32
Delivery and pick-up
Revenues:
Revenues, Topic 606	157	116
Revenues, Total	157	116
Other
Revenues:
Other, Topic 842	124	81
Revenues, Topic 606	48	33
Revenues, Total	172	114
Total ancillary and other rental revenues
Revenues:
Revenues, Topic 842	124	81
Revenues, Topic 606	205	149
Revenues, Total	329	230
Sales of rental equipment
Revenues:
Revenues, Topic 606	211	267
Revenues, Total	211	267
Sales of new equipment
Revenues:
Revenues, Topic 606	45	49
Revenues, Total	45	49
Contractor supplies sales
Revenues:
Revenues, Topic 606	29	24
Revenues, Total	29	24
Service and other revenues
Revenues:
Revenues, Topic 606	64	50
Revenues, Total	$ 64	$ 50