Revenue Earning Equipment - Schedule of Revenue Earning Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Revenue Earning Equipment [Line Items]
Cost	$ 12,405,537	$ 12,148,290
Accumulated Depreciation	(4,105,429)	(3,963,555)
Net Book Value	8,300,108	8,184,735
Held for use: Full service lease [Member]
Revenue Earning Equipment [Line Items]
Cost	9,239,442	8,839,941
Accumulated Depreciation	(2,838,897)	(2,723,605)
Net Book Value	6,400,545	6,116,336
Held for use: Commercial rental [Member]
Revenue Earning Equipment [Line Items]
Cost	2,589,646	2,811,715
Accumulated Depreciation	(874,713)	(907,412)
Net Book Value	1,714,933	1,904,303
Held-for-sale [Member]
Revenue Earning Equipment [Line Items]
Cost	576,449	496,634
Accumulated Depreciation	(391,819)	(332,538)
Net Book Value	184,630	164,096
Assets Held under Capital Leases [Member]
Revenue Earning Equipment [Line Items]
Cost	43,900	47,500
Accumulated Depreciation	$ (21,100)	$ (22,200)