Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues:
Revenues, Topic 842	$ 2,473	$ 2,073	$ 6,658	$ 5,368
Revenues, Topic 606	578	523	1,688	1,572
Revenues, Total	3,051	2,596	8,346	6,940
Equipment rentals
Revenues:
Revenues, Topic 842	2,473	2,073	6,658	5,368
Revenues, Topic 606	259	204	711	527
Revenues, Total	2,732	2,277	7,369	5,895
Owned equipment rentals
Revenues:
Owned equipment rentals, Topic 842	2,238	1,897	6,053	4,937
Revenues, Total	2,238	1,897	6,053	4,937
Re-rent revenue
Revenues:
Re-rent revenue, Topic 842	72	61	176	135
Revenues, Total	72	61	176	135
Delivery and pick-up
Revenues:
Revenues, Topic 606	221	173	583	437
Revenues, Total	221	173	583	437
Other
Revenues:
Other, Topic 842	163	115	429	296
Revenues, Topic 606	38	31	128	90
Revenues, Total	201	146	557	386
Total ancillary and other rental revenues
Revenues:
Revenues, Topic 842	163	115	429	296
Revenues, Topic 606	259	204	711	527
Revenues, Total	422	319	1,140	823
Sales of rental equipment
Revenues:
Revenues, Topic 606	181	183	556	644
Revenues, Total	181	183	556	644
Sales of new equipment
Revenues:
Revenues, Topic 606	32	47	115	153
Revenues, Total	32	47	115	153
Contractor supplies sales
Revenues:
Revenues, Topic 606	32	29	94	80
Revenues, Total	32	29	94	80
Service and other revenues
Revenues:
Revenues, Topic 606	74	60	212	168
Revenues, Total	$ 74	$ 60	$ 212	$ 168