Acquisitions and Divestitures (Acquisition) (Details) - USD ($) $ in Millions	1 Months Ended
	Feb. 28, 2015	Sep. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill		$ 1,358	$ 1,359
Penske Acquisition
Business Acquisition [Line Items]
Payments to acquire assets of certain Hertz-branded franchises	$ 87
Revenue earning equipment	71
Property and other equipment	6
Other intangible assets	9
Goodwill	1
Total	$ 87