Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues:
Revenues, Topic 842	$ 2,923	$ 2,473	$ 8,108	$ 6,658
Revenues, Topic 606	842	578	2,496	1,688
Revenues, Total	3,765	3,051	10,604	8,346
Equipment rentals
Revenues:
Revenues, Topic 842	2,923	2,473	8,108	6,658
Revenues, Topic 606	301	259	837	711
Revenues, Total	3,224	2,732	8,945	7,369
Owned equipment rentals
Revenues:
Owned equipment rentals, Topic 842	2,651	2,238	7,378	6,053
Revenues, Total	2,651	2,238	7,378	6,053
Re-rent revenue
Revenues:
Re-rent revenue, Topic 842	68	72	176	176
Revenues, Total	68	72	176	176
Delivery and pick-up
Revenues:
Revenues, Topic 606	258	221	699	583
Revenues, Total	258	221	699	583
Other
Revenues:
Other, Topic 842	204	163	554	429
Revenues, Topic 606	43	38	138	128
Revenues, Total	247	201	692	557
Total ancillary and other rental revenues
Revenues:
Revenues, Topic 842	204	163	554	429
Revenues, Topic 606	301	259	837	711
Revenues, Total	505	422	1,391	1,140
Sales of rental equipment
Revenues:
Revenues, Topic 606	366	181	1,136	556
Revenues, Total	366	181	1,136	556
Sales of new equipment
Revenues:
Revenues, Topic 606	52	32	166	115
Revenues, Total	52	32	166	115
Contractor supplies sales
Revenues:
Revenues, Topic 606	39	32	110	94
Revenues, Total	39	32	110	94
Service and other revenues
Revenues:
Revenues, Topic 606	84	74	247	212
Revenues, Total	$ 84	$ 74	$ 247	$ 212