Acquisitions (Narrative) (Details) rental_unit in Thousands, $ in Millions		3 Months Ended		12 Months Ended
	May 25, 2021 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($) rental_unit	Dec. 31, 2020 USD ($)
Business Acquisition [Line Items]
Revenues		$ 2,524	$ 2,057
General Finance Corporation
Business Acquisition [Line Items]
Aggregate consideration paid	$ 1,032
General Finance Corporation
Business Acquisition [Line Items]
Rental fleet, number of units (approximately) | rental_unit			100
Property subject to or available for operating lease, gross			$ 650
Revenues			$ 89	$ 342