Restatement (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Depreciation of revenue earning equipment and lease charges, net	$ 678		$ 708	$ 1,385	$ 1,434
Direct operating	1,502		1,594	2,910	3,037
Income (loss) before income taxes	71		123	(14)	64
Net income (loss)	36		$ 73	(33)	$ 6
Prepaid expenses and other assets	964			964		$ 917
Accrued taxes, net	123			123		$ 134
Restatement Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Depreciation of revenue earning equipment and lease charges, net	(18)			(18)
Direct operating	(3)			(3)
Income (loss) before income taxes	21			21
Net income (loss)	13			13
Prepaid expenses and other assets	26			26
Deferred taxes on income, net	5			5
Accrued taxes, net	21			21
Restatement Adjustment | Depreciation Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Depreciation of revenue earning equipment and lease charges, net	21	$ 3		18
Restatement Adjustment | Direct Operating Expenses
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Direct operating	$ 3			$ 3