Revenue Recognition (Changes in Accounting Principles) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenues:
Revenues, Topic 842	$ 2,826	$ 2,660
Revenues, Topic 606	893	825
Total revenues	$ 3,719	$ 3,485
Operating lease, lease income, statement of income or comprehensive income [extensible enumeration]	Total revenues	Total revenues
Total equipment rentals
Revenues:
Revenues, Topic 842	$ 2,826	$ 2,660
Revenues, Topic 606	319	269
Total revenues	3,145	2,929
Owned equipment rentals
Revenues:
Owned equipment rentals, Topic 842	2,522	2,404
Total revenues	2,522	2,404
Re-rent revenue
Revenues:
Re-rent revenue, Topic 842	63	55
Total revenues	63	55
Delivery and pick-up
Revenues:
Revenues, Topic 606	252	214
Total revenues	252	214
Other
Revenues:
Other, Topic 842	241	201
Revenues, Topic 606	67	55
Total revenues	308	256
Total ancillary and other rental revenues
Revenues:
Revenues, Topic 842	241	201
Revenues, Topic 606	319	269
Total revenues	560	470
Sales of rental equipment
Revenues:
Revenues, Topic 606	377	383
Total revenues	377	383
Sales of new equipment
Revenues:
Revenues, Topic 606	70	48
Total revenues	70	48
Contractor supplies sales
Revenues:
Revenues, Topic 606	36	36
Total revenues	36	36
Service and other revenues
Revenues:
Revenues, Topic 606	91	89
Total revenues	$ 91	$ 89