Discontinued Operations (Results of Operations Not Spun-off) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income (loss) from discontinued operations	$ (2)	$ 21	$ (13)	$ 53
Old Hertz Holdings' Worldwide Equipment Rental | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenues	0	401	677	1,131
Direct operating expenses	0	219	366	637
Depreciation of revenue earning equipment and lease charges, net	0	86	181	243
Selling, general and administrative	0	41	124	129
Interest expense, net	0	4	13	17
Other (income) expense, net	0	(1)	(1)	(4)
Income (loss) from discontinued operations before income taxes	0	52	(6)	109
(Provision) benefit for taxes on discontinued operations	(2)	(31)	(7)	(56)
Net income (loss) from discontinued operations	$ (2)	21	(13)	53
Old Hertz Holdings' Worldwide Equipment Rental | Discontinued Operations | Senior ABL Facility
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Interest expense, net		$ 4	5	$ 12
HERC | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue from Related Parties			$ 2,000