Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues:
Revenues, Topic 842	$ 2,702	$ 2,215	$ 5,185	$ 4,185
Revenues, Topic 606	852	556	1,654	1,110
Revenues, Total	3,554	2,771	6,839	5,295
Equipment rentals
Revenues:
Revenues, Topic 842	2,702	2,215	5,185	4,185
Revenues, Topic 606	279	247	536	452
Revenues, Total	2,981	2,462	5,721	4,637
Owned equipment rentals
Revenues:
Owned equipment rentals, Topic 842	2,461	2,018	4,727	3,815
Revenues, Total	2,461	2,018	4,727	3,815
Re-rent revenue
Revenues:
Re-rent revenue, Topic 842	56	55	108	104
Revenues, Total	56	55	108	104
Delivery and pick-up
Revenues:
Revenues, Topic 606	238	205	441	362
Revenues, Total	238	205	441	362
Other
Revenues:
Other, Topic 842	185	142	350	266
Revenues, Topic 606	41	42	95	90
Revenues, Total	226	184	445	356
Total ancillary and other rental revenues
Revenues:
Revenues, Topic 842	185	142	350	266
Revenues, Topic 606	279	247	536	452
Revenues, Total	464	389	886	718
Sales of rental equipment
Revenues:
Revenues, Topic 606	382	164	770	375
Revenues, Total	382	164	770	375
Sales of new equipment
Revenues:
Revenues, Topic 606	70	38	114	83
Revenues, Total	70	38	114	83
Contractor supplies sales
Revenues:
Revenues, Topic 606	37	33	71	62
Revenues, Total	37	33	71	62
Service and other revenues
Revenues:
Revenues, Topic 606	84	74	163	138
Revenues, Total	$ 84	$ 74	$ 163	$ 138