Revenue Earning Equipment - Schedule of Revenue Earning Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Revenue Earning Equipment [Line Items]
Cost	$ 12,324,716	$ 12,148,290
Accumulated Depreciation	(4,049,623)	(3,963,555)
Net Book Value	8,275,093	8,184,735
Held for use: Full service lease [Member]
Revenue Earning Equipment [Line Items]
Cost	9,093,718	8,839,941
Accumulated Depreciation	(2,802,126)	(2,723,605)
Net Book Value	6,291,592	6,116,336
Held for use: Commercial rental [Member]
Revenue Earning Equipment [Line Items]
Cost	2,702,767	2,811,715
Accumulated Depreciation	(893,981)	(907,412)
Net Book Value	1,808,786	1,904,303
Held-for-sale [Member]
Revenue Earning Equipment [Line Items]
Cost	528,231	496,634
Accumulated Depreciation	(353,516)	(332,538)
Net Book Value	174,715	164,096
Assets Held under Capital Leases [Member]
Revenue Earning Equipment [Line Items]
Cost	46,300	47,500
Accumulated Depreciation	$ (22,700)	$ (22,200)