Debt (Details) (USD $)	1 Months Ended		3 Months Ended												3 Months Ended												1 Months Ended	3 Months Ended								3 Months Ended																																																																									3 Months Ended					1 Months Ended
	Mar. 31, 2013		Mar. 31, 2013		Mar. 31, 2012	Dec. 31, 2012		Mar. 31, 2013 Corporate Debt		Dec. 31, 2012 Corporate Debt		Mar. 31, 2013 Senior credit facility	Mar. 31, 2013 Senior Term Facility	Dec. 31, 2012 Senior Term Facility	Mar. 31, 2013 Senior ABL Facility	Dec. 31, 2012 Senior ABL Facility	Mar. 31, 2013 Senior Notes		Dec. 31, 2012 Senior Notes		Mar. 31, 2013 4.25% Senior Notes Due April 2018	Dec. 31, 2012 4.25% Senior Notes Due April 2018	Mar. 31, 2013 7.50% Senior Notes due October 2018	Dec. 31, 2012 7.50% Senior Notes due October 2018	Mar. 31, 2013 7.375% Senior Notes due January 2021	Dec. 31, 2012 7.375% Senior Notes due January 2021	Mar. 31, 2012 6.75% Senior Notes due April 2019	Mar. 31, 2013 6.75% Senior Notes due April 2019	Dec. 31, 2012 6.75% Senior Notes due April 2019	Mar. 31, 2013 5.875% Senior Notes Due October 2020	Dec. 31, 2012 5.875% Senior Notes Due October 2020	Mar. 31, 2013 6.250% Senior Notes due October 2022	Dec. 31, 2012 6.250% Senior Notes due October 2022	Mar. 31, 2013 Promissory Notes	Dec. 31, 2012 Promissory Notes	Mar. 31, 2013 Convertible Senior Notes feature	Dec. 31, 2012 Convertible Senior Notes	Mar. 31, 2013 Other Corporate Debt	Dec. 31, 2012 Other Corporate Debt	Mar. 31, 2013 Fleet Debt	Dec. 31, 2012 Fleet Debt	Mar. 31, 2013 U.S. Fleet Variable Funding Notes	Dec. 31, 2012 U.S. Fleet Variable Funding Notes	Mar. 31, 2013 U.S. Fleet Variable Funding Notes Series 2009-1		Dec. 31, 2012 U.S. Fleet Variable Funding Notes Series 2009-1		Mar. 31, 2012 U.S. Fleet Variable Funding Notes Series 2009-1	Mar. 31, 2013 US Fleet Medium Term Notes 2013 Series 1		Jan. 31, 2013 US Fleet Medium Term Notes 2013 Series 1	Jan. 31, 2013 Rental Car Asset Backed Notes, Class-A, Three Year	Jan. 31, 2013 Rental Car Asset Backed Notes, Class-A, Five Year	Jan. 31, 2013 Rental Car Asset Backed Notes, Class-B, Three Year	Jan. 31, 2013 Rental Car Asset Backed Notes, Class-B, Five Year	Mar. 31, 2013 U.S. Fleet Medium Term Notes	Dec. 31, 2012 U.S. Fleet Medium Term Notes	Mar. 31, 2013 U.S. Fleet Medium Term Notes Series 2009-2 Notes		Dec. 31, 2012 U.S. Fleet Medium Term Notes Series 2009-2 Notes		Mar. 31, 2013 U.S. Fleet Medium Term Notes Series 2010-1 Notes		Dec. 31, 2012 U.S. Fleet Medium Term Notes Series 2010-1 Notes		Mar. 31, 2013 U.S. Fleet Medium Term Notes Series 2011-1 Notes		Dec. 31, 2012 U.S. Fleet Medium Term Notes Series 2011-1 Notes		Mar. 31, 2013 RCFC US Fleet Variable Funding Notes [Member]	Mar. 31, 2013 RCFC Series 2010-3 Notes	Dec. 31, 2012 RCFC Series 2010-3 Notes	Mar. 31, 2013 RCFC Series 2011-1 Notes	Dec. 31, 2012 RCFC Series 2011-1 Notes	Mar. 31, 2013 RCFC Series 2011-2 Notes	Dec. 31, 2012 RCFC Series 2011-2 Notes	Mar. 31, 2013 RCFC U.S. ABS Program	Dec. 31, 2012 RCFC U.S. ABS Program	Mar. 31, 2013 Donlen GN II Variable Funding Note	Dec. 31, 2012 Donlen GN II Variable Funding Note	Mar. 31, 2013 Other Fleet Debt	Dec. 31, 2012 Other Fleet Debt	Mar. 31, 2013 U.S. Fleet Financing Facility	Dec. 31, 2012 U.S. Fleet Financing Facility	Mar. 31, 2013 European Revolving Credit Facility	Dec. 31, 2012 European Revolving Credit Facility	Mar. 31, 2013 European Fleet Notes	Dec. 31, 2012 European Fleet Notes	Mar. 31, 2013 European Securitization		Dec. 31, 2012 European Securitization		Mar. 31, 2013 Canadian Securitization	Dec. 31, 2012 Canadian Securitization	Mar. 31, 2013 Dollar Thrifty Sponsored Canadian Securitization [Member]		Dec. 31, 2012 Dollar Thrifty Sponsored Canadian Securitization [Member]		Mar. 31, 2013 Australian Securitization		Dec. 31, 2012 Australian Securitization		Mar. 31, 2013 Brazilian Fleet Financing		Dec. 31, 2012 Brazilian Fleet Financing	Mar. 31, 2013 Capitalized Leases		Dec. 31, 2012 Capitalized Leases	Mar. 31, 2013 Maximum 6.75% Senior Notes due April 2019	Mar. 31, 2013 Minimum Senior ABL Facility	Mar. 31, 2013 Letters of credit	Mar. 31, 2013 Letters of credit Senior Term Facility	Mar. 31, 2013 Letters of credit Senior ABL Facility	Dec. 31, 2010 Parent	Dec. 31, 2012 Parent
Debt Instruments [Abstract]
Average Interest Rate (as a percent)													3.75%		2.46%		6.58%	[1]																6.96%		5.25%		4.30%						1.04%	[2]				1.68%	[2]								5.38%	[2]			3.77%	[2]			2.86%	[2]				1.05%		2.81%		3.21%				1.10%				2.96%		2.85%		8.50%		2.49%	[2]			2.16%		2.13%	[2],[3],[4]			4.34%	[2]			13.18%	[3]		4.21%	[3]
Outstanding principal	$ 950,000,000	[2]	$ 950,000,000	[2]		$ 0	[2]						$ 2,120,100,000	$ 2,125,500,000	$ 630,000,000	$ 195,000,000	$ 3,900,000,000	[1]	$ 3,650,000,000	[1]	$ 250,000,000	$ 0	$ 700,000,000	$ 700,000,000	$ 500,000,000	$ 500,000,000		$ 1,250,000,000	$ 1,250,000,000	$ 700,000,000	$ 700,000,000	$ 500,000,000	$ 500,000,000	$ 48,700,000	$ 48,700,000	$ 474,700,000	$ 474,700,000	$ 94,000,000	$ 88,700,000			$ 1,950,000,000	$ 2,350,000,000	$ 1,950,000,000	[2]	$ 2,350,000,000	[2]									$ 3,105,400,000	$ 2,443,700,000	$ 807,500,000	[2]	$ 1,095,900,000	[2]	$ 749,900,000	[2]	$ 749,800,000	[2]	$ 598,000,000	[2]	$ 598,000,000	[2]		$ 519,000,000	$ 519,000,000	$ 500,000,000	$ 500,000,000	$ 400,000,000	$ 400,000,000	$ 1,419,000,000	$ 1,419,000,000	$ 898,100,000	$ 899,300,000	$ 1,707,500,000	$ 1,791,300,000	$ 166,000,000	$ 166,000,000	$ 127,800,000	$ 185,300,000	$ 511,200,000	$ 529,400,000	$ 237,400,000	[2]	$ 242,200,000	[2]	$ 85,600,000	$ 100,500,000	$ 54,100,000	[2],[4]	$ 55,300,000	[2],[4]	$ 149,900,000	[2]	$ 148,900,000	[2]	$ 14,200,000		$ 14,000,000	$ 350,800,000		$ 337,600,000
Unamortized Net Discount								(30,500,000)	[5]	(37,300,000)	[5]																									(33,900,000)	(40,600,000)			10,500,000	12,100,000
Total Debt	16,316,982,000		16,316,982,000			15,448,624,000		7,237,000,000		6,545,300,000																														9,080,000,000	8,903,300,000
Aggregate amounts of maturities of debt for each of the twelve month periods
2013	5,985,900		5,985,900
2014	1,991,100		1,991,100
2015	1,101,800		1,101,800
2016	529,200		529,200
2017	248,100		248,100
After 2017	6,480,900		6,480,900
Period over which cash generated from operations, together with amounts available under various liquidity facilities will be adequate to permit entity to meet debt maturities			12 months
Letters of Credit
Outstanding standby letters of credit												617,600,000																																																																																																			669,600,000
2013 Events
Additional aggregate principal issued																											250,000,000
Interest rate (as a percent)																					4.25%		7.50%		7.38%			6.75%		5.88%		6.25%																				1.12%	1.83%	1.86%	2.48%
Treasury Stock, Value, Acquired, Par Value Method			(467,248,000)		0
Treasury Stock acquired (in shares)	23,200,000
Debt Instrument, Face Amount																																																			950,000,000	282,750,000	543,750,000	42,250,000	81,250,000
Maximum maturity period of outstanding borrowings to be reflected as short-term borrowings			3 months
Weighted average interest rate of short term borrowings (as percent)	2.10%		2.10%
Other short-term borrowings	5,686,700,000		5,686,700,000
Debt Instrument, Covenant Fixed Charge Coverage Ratio Number of Quarters															1 year
Minimum closing common stock price per share (in dollars per share)																																																																																																																			$ 10.77
Minimum number of trading days within 30 consecutive trading days during which the closing common stock price per share exceeded the conversion price for the notes to be redeemable																																																																																																																		20 days
Number of consecutive trading day periods within which the closing common stock price per share exceeded the conversion price for at least 20 trading days for the notes to be redeemable																																																																																																																		30 days
Debt instrument, redemption, instruments settled in stock, percent																																				100.00%
Minimum number of conversion features that are required to be satisfied during future measurement period for notes to remain convertible																																				1
Registration Rights
Increase in the credit agreement's borrowing capacity																																																250,000,000
Special interest (as a percent)																												0.25%
Period of initial default per registration payment arrangement																												90 days
Increase in special interest (as a percent)																												0.25%
Period of subsequent default per registration payment arrangement																												90 days
Maximum increase in special interest (as a percent)																																																																																																													0.50%
Financial Covenant Compliance
Fixed charge coverage ratio																																																																																																														1
Borrowing Capacity and Availability
Remaining Capacity	2,224,800,000		2,224,800,000					751,300,000							751,300,000																									1,473,500,000		488,800,000																												81,000,000									105,000,000				24,000,000		153,400,000				260,300,000				111,200,000		93,500,000				111,200,000							45,100,000
Availability Under Borrowing Base Limitation	761,600,000		761,600,000					751,300,000							751,300,000																									10,300,000		0																												0									0				0		0				0				0		0											10,300,000						100,000	1,027,200,000
Total assets of variable interest entities	393,400,000		393,400,000			440,800,000
Total liabilities of variable interest entities	$ 392,900,000		$ 392,900,000			$ 440,300,000

[1] References to our "Senior Notes" include the series of Hertz's unsecured senior notes set forth in the table below. As of March 31, 2013 and December 31, 2012, the outstanding principal amount for each such series of the Senior Notes is also specified below.

[2] Maturity reference is to the "expected final maturity date" as opposed to the subsequent "legal maturity date." The expected final maturity date is the date by which Hertz and investors in the relevant indebtedness expect the relevant indebtedness to be repaid. The legal final maturity date is the date on which the relevant indebtedness is legally due and payable.

[3] As applicable, reference is to the March 31, 2013 weighted average interest rate (weighted by principal balance).

[4] RCFC U.S. ABS Program and the Dollar Thrifty-Sponsored Canadian Securitization represent fleet debt acquired in connection with the Dollar Thrifty acquisition on November 19, 2012.

[5] As of March 31, 2013 and December 31, 2012, $33.9 million and $40.6 million, respectively, of the unamortized corporate discount relates to the 5.25% Convertible Senior Notes.