Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2021	Dec. 31, 2022	Sep. 01, 2022
Related Party Transaction [Line Items]
Non-controlling interests	$ 4.0		$ 4.0			$ 3.0
Assets	31,395.0		31,395.0			25,927.0
Other (income) expense, net	(4.0)	$ 0.0	(2.0)	$ 0.0
Vehicles, net	20,625.0		20,625.0			15,961.0
Vehicle, net investment in lease receivables	31.0		31.0			36.0
Other non-current assets	480.0		480.0			499.0
Avis Mobility Ventures LLC (AMV) | Receivables From Related Party | Related Party
Related Party Transaction [Line Items]
Vehicles, net	6.0		6.0			6.0
Avis Mobility Ventures LLC (AMV) | Avis Mobility Ventures LLC (AMV) | Related Party
Related Party Transaction [Line Items]
Other non-current assets	32.0		32.0			$ 49.0
Avis Mobility Ventures LLC (AMV) | Avis Mobility Ventures LLC (AMV) | Administrative Services | Related Party
Related Party Transaction [Line Items]
Other (income) expense, net	6.0		14.0
Avis Mobility Ventures LLC (AMV) | Avis Mobility Ventures LLC (AMV) | Equipment Investment | Related Party
Related Party Transaction [Line Items]
Other (income) expense, net	10.0		16.0
Subsidiary Equity
Related Party Transaction [Line Items]
Assets	$ 49.0		49.0
Gain on deconsolidation			$ 10.0
Subsidiary Equity | SRS Mobility Ventures, LLC
Related Party Transaction [Line Items]
Contributions from non-controlling interests					$ 37.5
Non-controlling interests							$ 62.0
Subsidiary Equity | SRS Mobility Ventures, LLC | Company Subsidiary
Related Party Transaction [Line Items]
Ownership interest							51.00%