Segment Information (Reconciliation to Income (loss) from Continuing Operations) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Equipment rentals gross profit	$ 1,241	$ 992
Selling, general and administrative expenses	(382)	(323)
Restructuring charge	(1)	0
Non-rental depreciation and amortization	(118)	(97)
Interest expense, net	(150)	(94)
Other income, net	4	5
Income before provision for income taxes	594	483
Total equipment rentals gross profit
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Equipment rentals gross profit	1,003	834
Gross profit from other lines of business
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Equipment rentals gross profit	$ 238	$ 158