Debt (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Debt Instrument [Line Items]
Debt	$ 17,055.2		$ 15,014.5
Corporate Debt
Debt Instrument [Line Items]
Unamortized Net (Discount) Premium	3.4		3.3
Debt	6,806.7		6,111.2
Senior Term Facility
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	3.26%
Outstanding principal	2,109.5		2,125.5
Senior ABL Facility
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	2.96%
Outstanding principal	679.7		195.0
Senior Notes
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	6.58%	[1]
Outstanding principal	3,900.0	[1]	3,650.0	[1]
Promissory Notes
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	6.96%
Outstanding principal	48.7		48.7
Other Corporate Debt
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	3.58%
Outstanding principal	65.4		88.7
U.S. Fleet Medium Term Notes
Debt Instrument [Line Items]
Outstanding principal	3,062.1		2,443.7
U.S. Fleet Variable Funding Notes Series 2009-1
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	1.00%	[2]
Outstanding principal	2,495.0	[2]	2,350.0	[2]
U.S. Fleet Variable Funding Notes
Debt Instrument [Line Items]
Outstanding principal	2,495.0		2,350.0
U.S. Fleet Medium Term Notes Series 2009-2 Notes
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	5.37%	[2]
Outstanding principal	807.5	[2]	1,095.9	[2]
U.S. Fleet Medium Term Notes Series 2010-1 Notes
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	3.83%	[2]
Outstanding principal	706.6	[2]	749.8	[2]
U.S. Fleet Medium Term Notes Series 2011-1 Notes
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	2.86%	[2]
Outstanding principal	598.0	[2]	598.0	[2]
US Fleet Medium Term Notes 2013 Series 1
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	1.68%	[2]
Outstanding principal	950.0	[2]	0	[2]
RCFC U.S. ABS Program
Debt Instrument [Line Items]
Outstanding principal	1,368.0		1,419.0
RCFC Series 2010-3 Notes
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	1.01%	[2],[3]
Outstanding principal	468.0	[2],[3]	519.0	[2],[3]
RCFC Series 2011-1 Notes
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	2.81%	[2],[3]
Outstanding principal	500.0	[2],[3]	500.0	[2],[3]
RCFC Series 2011-2 Notes
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	3.21%	[2],[3]
Outstanding principal	400.0	[2],[3]	400.0	[2],[3]
Donlen ABS Program
Debt Instrument [Line Items]
Outstanding principal	945.0		899.3
Donlen GN II Variable Funding Note Facility
Debt Instrument [Line Items]
Outstanding principal	0	[2]	899.3	[2]
Other Fleet Debt
Debt Instrument [Line Items]
Outstanding principal	2,378.4		1,791.3
U.S. Fleet Financing Facility
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	2.93%
Outstanding principal	162.0		166.0
European Revolving Credit Facility
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	2.56%
Outstanding principal	431.6		185.3
European Fleet Notes
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	8.50%
Outstanding principal	539.6		529.4
European Securitization
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	2.52%	[2]
Outstanding principal	461.3	[2]	242.2	[2]
Canadian Securitization
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	2.15%	[2]
Outstanding principal	145.5	[2]	100.5	[2]
Dollar Thrifty Sponsored Canadian Securitization
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	2.13%	[2],[3]
Outstanding principal	60.1	[2],[3]	55.3	[2],[3]
Australian Securitization
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	4.03%	[2]
Outstanding principal	106.3	[2]	148.9	[2]
Brazilian Fleet Financing Facility
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	14.87%
Outstanding principal	12.7		14.0
Capitalized Leases
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	4.10%
Outstanding principal	452.1		337.6
Fleet debt
Debt Instrument [Line Items]
Unamortized Net (Discount) Premium	7.2		12.1
Debt	10,248.5		8,903.3
HFLF Seriers 2013-1 Notes
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	1.05%	[2]
Outstanding principal	730.2	[2]	0	[2]
HFLF Series 2013-2 Notes
Debt Instrument [Line Items]
Average Interest Rate (as a percent)	1.16%	[2]
Outstanding principal	$ 214.8	[2]	$ 0	[2]

[1] References to our "Senior Notes" include the series of Hertz's unsecured senior notes set forth in the table below. As of September 30, 2013 and December 31, 2012, the outstanding principal amount for each such series of the Senior Notes is as specified below. Outstanding Principal (in millions), Senior Notes, September 30, 2013 and December 31, 2012: 4.25% Senior Notes due April 2018 - $250.0 and $0.0, 7.50% Senior Notes due October 2018 - 700.0 and 700.0, 6.75% Senior Notes due April 2019 - 1,250.0 and 1,250.0, 5.875% Senior Notes due October 2020 - 700.0 and 700.0, 7.375% Senior Notes due January 2021 - 500.0 and 500.0, 6.25% Senior Notes due October 2022 - 500.0 and 500.0, Total - $3,900.0 and $3,650.0

[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] 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.