Revenue Earning Equipment Schedule of Revenue Earning Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Revenue Earning Equipment [Line Items]
Cost	$ 12,721,021	$ 12,480,342
Accumulated Depreciation	(4,514,180)	(4,332,620)
Net Book Value	8,206,841	8,147,722
ChoiceLease
Revenue Earning Equipment [Line Items]
Cost	9,693,006	9,486,977
Accumulated Depreciation	(3,200,466)	(3,031,937)
Net Book Value	6,492,540	6,455,040
Commercial rental
Revenue Earning Equipment [Line Items]
Cost	2,532,681	2,499,010
Accumulated Depreciation	(942,127)	(935,346)
Net Book Value	1,590,554	1,563,664
Held for sale
Revenue Earning Equipment [Line Items]
Cost	495,334	494,355
Accumulated Depreciation	(371,587)	(365,337)
Net Book Value	123,747	129,018
Assets Held under Capital Leases
Revenue Earning Equipment [Line Items]
Cost	36,000	43,000
Accumulated Depreciation	$ (18,000)	$ (22,000)