Background (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Nov. 30, 2011	Nov. 19, 2012 Dollar Thrifty	Dec. 31, 2012 Hertz Investors, Inc [Member]	Dec. 31, 2012 Hertz Global Holdings [Member]
Acquisition
Capital Stock Oustanding, Investor Ownership Percentage					100.00%	100.00%
Noncontrolling Interest, Ownership Percentage by Parent		100.00%	65.00%
Per share price				$ 87.50
Common stock shares sold	50,000,000
Ownership percent held in ultimate parent	26.00%