Income Taxes (Components of deferred tax assets and liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Reserves and allowances	$ 193	$ 186
Debt cancellation and other	17	18
Net operating loss and credit carryforwards	97	171
Interest carryforward	0	84
Operating lease assets	287	216
Total deferred tax assets	594	675
Valuation allowance	(4)	(19)
Total net deferred tax assets	590	656
Property and equipment, including rental equipment	(2,921)	(2,986)
Operating lease liabilities	(285)	(216)
Intangibles	(85)	(125)
Total deferred tax liability	(3,291)	(3,327)
Total net deferred tax liability	$ (2,701)	$ (2,671)