Total Equity (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Balance	$ 2,234,675,000	$ 2,118,400,000
Net loss attributable to Hertz Global Holdings, Inc. and Subsidiaries common stockholders	(56,333,000)	(132,615,000)
Other comprehensive income	32,338,000	31,050,000
Net income relating to noncontrolling interest		3,700,000
Employee stock purchase plan	1,200,000	1,000,000
Net settlement on vesting of restricted stock	(18,500,000)	(10,700,000)
Stock-based employee compensation charges, net of tax	7,500,000	9,100,000
Exercise of stock options, net of tax	4,500,000	1,800,000
Common shares issued to Directors	100,000	100,000
Balance	2,205,494,000	2,021,800,000
Accumulated translation gains included in accumulated other comprehensive income (loss)	120,900,000		91,300,000
Pension benefits included in accumulated other comprehensive income (loss)	(99,800,000)		(99,600,000)
Unrealized losses on our Euro-denominated debt included in accumulated other comprehensive income (loss)	(19,400,000)		(19,400,000)
Unrealized holding gains (losses) on securities	3,400,000		300,000
Unrealized holding gains (losses) on others	(1,200,000)		(1,000,000)
Common Stock
Balance	4,200,000	4,100,000
Balance at beginning of period (in shares)	417.0	413.5
Employee stock purchase plan (in shares)	0.1	0.1
Net settlement on vesting of restricted stock (in shares)	1.8	1.0
Exercise of stock options (in shares)	0.8	0.3
Balance	4,200,000	4,100,000
Balance at end of period (in shares)	419.7	414.9
Additional Paid-In Capital
Balance	3,206,000,000	3,183,200,000
Employee stock purchase plan	1,200,000	1,000,000
Net settlement on vesting of restricted stock	(18,500,000)	(10,700,000)
Stock-based employee compensation charges, net of tax	7,500,000	9,100,000
Exercise of stock options, net of tax	4,500,000	1,800,000
Common shares issued to Directors	100,000	100,000
Balance	3,200,800,000	3,184,500,000
Accumulated Deficit
Balance	(947,100,000)	(1,123,200,000)
Net loss attributable to Hertz Global Holdings, Inc. and Subsidiaries common stockholders	(56,300,000)	(132,600,000)
Balance	(1,003,400,000)	(1,255,800,000)
Accumulated Other Comprehensive Income (Loss)
Balance	(28,400,000)	37,800,000
Other comprehensive income	32,300,000	31,000,000
Balance	3,900,000	68,800,000
Non-controlling Interest
Balance		16,500,000
Net income relating to noncontrolling interest		3,700,000
Balance		$ 20,200,000