Debt (Details) - Credit Facility [Domain] € in Millions, $ in Millions | 3 Months Ended | 7 Months Ended | | | | |
Sep. 30, 2015 | Mar. 31, 2015USD ($) | Jul. 15, 2015 | May. 30, 2015EUR (€) | Dec. 31, 2014USD ($) | Dec. 15, 2014 | Dec. 31, 2013USD ($) |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | $ 3,900 | | | $ 3,900 | | |
Total Debt | | 16,351 | | | 15,993 | | |
Borrowing Capacity and Availability | | | | | | | |
Remaining capacity | | 2,844 | | | | | |
Availability under borrowing base limitation | | 942 | | | | | |
Restricted cash and cash equivalents | | 411 | | | 571 | | |
VIE, consolidated carrying amount of assets | | 352 | | | 427 | | |
VIE, consolidated carrying amount of liabilities | | 352 | | | 426 | | |
Letter of Credit | | | | | | | |
Letters of Credit | | | | | | | |
Outstanding standby letters of credit | | 632 | | | | | |
Corporate Debt | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Unamortized (Discount) Premium | | 3 | | | 3 | | |
Total Debt | | 6,434 | | | 6,431 | | |
Borrowing Capacity and Availability | | | | | | | |
Remaining capacity | | 1,127 | | | | | |
Availability under borrowing base limitation | | $ 933 | | | | | |
Senior Term Facility | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 3.68% | | | | | |
Outstanding principal | | $ 2,078 | | | 2,083 | | |
Senior ABL Facility | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 2.70% | | | | | |
Outstanding principal | | $ 355 | | | $ 344 | | |
2013 Events | | | | | | | |
Debt Instrument, Covenant Fixed Charge Coverage Ratio Number of Quarters | | 1 year | | | | | |
Borrowing Capacity and Availability | | | | | | | |
Remaining capacity | | $ 1,127 | | | | | |
Availability under borrowing base limitation | | 933 | | | | | |
Fixed Charge Coverage Ratio | | | | | 1 | | |
Senior ABL Facility | Letter of Credit | | | | | | | |
Borrowing Capacity and Availability | | | | | | | |
Availability under borrowing base limitation | | $ 1,026 | | | | | |
Senior Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 6.58% | | | | | |
Outstanding principal | | $ 3,900 | | | $ 3,900 | | |
Promissory Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 7.00% | | | | | |
Outstanding principal | | $ 27 | | | 27 | | |
Other Corporate Debt | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 3.86% | | | | | |
Outstanding principal | | $ 71 | | | 74 | | |
Senior Notes 4.25% Due April 2018 | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | $ 250 | | | 250 | | |
2013 Events | | | | | | | |
Interest rate (as a percent) | | 4.25% | | | | | |
Senior Notes 7.5% Due October 2018 | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | $ 700 | | | 700 | | |
2013 Events | | | | | | | |
Interest rate (as a percent) | | 7.50% | | | | | |
Senior Notes 5.875% Due October 2020 | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | $ 700 | | | 700 | | |
2013 Events | | | | | | | |
Interest rate (as a percent) | | 5.875% | | | | | |
7.375% Senior Notes due January 2021 | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | $ 500 | | | 500 | | |
2013 Events | | | | | | | |
Interest rate (as a percent) | | 7.375% | | | | | |
6.250% Senior Notes due October 2022 | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | $ 500 | | | 500 | | |
2013 Events | | | | | | | |
Interest rate (as a percent) | | 6.25% | | | | | |
Senior Credit Facility | | | | | | | |
Letters of Credit | | | | | | | |
Outstanding standby letters of credit | | $ 618 | | | | | |
Senior Notes 6.75% Percent Due April 2019 | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | $ 1,250 | | | 1,250 | | |
2013 Events | | | | | | | |
Interest rate (as a percent) | | 6.75% | | | | | |
Fleet Debt | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Unamortized (Discount) Premium | | $ (6) | | | (7) | | |
Total Debt | | 9,917 | | | 9,562 | | |
Borrowing Capacity and Availability | | | | | | | |
Remaining capacity | | 1,717 | | | | | |
Availability under borrowing base limitation | | 9 | | | | | |
Restricted cash and cash equivalents | | 369 | | | 515 | | |
U.S. Fleet Medium Term Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | 1,670 | | | 2,258 | | |
U.S. Fleet Medium Term Notes Series 2009-2 Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | $ 0 | | | 404 | | |
U.S. Fleet Medium Term Notes Series 2010-1 Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 4.23% | | | | | |
Outstanding principal | | $ 490 | | | 490 | | |
U.S. Fleet Medium Term Notes Series 2011-1 Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 3.51% | | | | | |
Outstanding principal | | $ 230 | | | 414 | | |
US Fleet Medium Term Notes 2013 Series 1 | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 1.68% | | | | | |
Outstanding principal | | $ 950 | | | 950 | | |
RCFC U.S. ABS Program | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | 0 | | | 433 | | |
RCFC Series 2011-1 Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | 0 | | | 167 | | $ 500 |
RCFC Series 2011-2 Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | 0 | | | 266 | | $ 400 |
HVF II U.S. ABS Program | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | 5,349 | | | 3,844 | | |
Borrowing Capacity and Availability | | | | | | | |
Remaining capacity | | 1,226 | | | | | |
Availability under borrowing base limitation | | $ 9 | | | | | |
HVF II Series 2013-A Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 1.11% | | | | | |
Outstanding principal | | $ 1,384 | | | 1,999 | | |
HVF II Series 2013-B Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 1.11% | | | | | |
Outstanding principal | | $ 1,500 | | | 976 | | |
HVFIISeries2014-A | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 1.41% | | | | | |
Outstanding principal | | $ 2,465 | | | 869 | | |
Donlen ABS Program | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | $ 330 | | | 247 | | |
HFLF Series 2013-2 Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 1.02% | | | | | |
Outstanding principal | | $ 330 | | | 247 | | |
HFLF Medium Term Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | 833 | | | 900 | | |
Borrowing Capacity and Availability | | | | | | | |
Remaining capacity | | 70 | | | | | |
Availability under borrowing base limitation | | $ 0 | | | | | |
HFLF Series 2013-A Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 0.81% | | | | | |
Outstanding principal | | $ 433 | | | 500 | | |
HFLF Series 2014-1 Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 0.68% | | | | | |
Outstanding principal | | $ 400 | | | 400 | | |
Other Fleet Debt | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Outstanding principal | | $ 1,735 | | | 1,880 | | |
U.S. Fleet Financing Facility | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 2.93% | | | | | |
Outstanding principal | | $ 190 | | | 164 | | |
European Revolving Credit Facility | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 2.74% | | | | | |
Outstanding principal | | $ 234 | | | 304 | | |
Borrowing Capacity and Availability | | | | | | | |
Remaining capacity | | 38 | | | | | |
Availability under borrowing base limitation | | $ 0 | | | | | |
European Fleet Notes | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 4.375% | | | | | |
Outstanding principal | | $ 463 | | | 517 | | |
European Securitization | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 1.95% | | | | | |
Outstanding principal | | $ 228 | | | 270 | | |
Borrowing Capacity and Availability | | | | | | | |
Remaining capacity | | 207 | | | | | |
Availability under borrowing base limitation | | $ 0 | | | | | |
Canadian Securitization | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 2.08% | | | | | |
Outstanding principal | | $ 97 | | | 105 | | |
Dollar Thrifty Sponsored Canadian Securitization | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 2.11% | | | | | |
Outstanding principal | | $ 37 | | | 40 | | |
Borrowing Capacity and Availability | | | | | | | |
Remaining capacity | | 82 | | | | | |
Availability under borrowing base limitation | | $ 0 | | | | | |
Australian Securitization | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 3.81% | | | | | |
Outstanding principal | | $ 100 | | | 112 | | |
Borrowing Capacity and Availability | | | | | | | |
Remaining capacity | | 94 | | | | | |
Availability under borrowing base limitation | | $ 0 | | | | | |
Brazilian Fleet Financing | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 16.00% | | | | | |
Outstanding principal | | $ 9 | | | 11 | | |
Capitalized Leases | | | | | | | |
Debt Instruments [Abstract] | | | | | | | |
Average interest rate (as a percent) | | 3.01% | | | | | |
Outstanding principal | | $ 383 | | | $ 364 | | |
Tranche B-2 Term Loans | | | | | | | |
Borrowing Capacity and Availability | | | | | | | |
Alternative base rate margin | | | | | | 1.75% | |
Tranche B Term Loans | | | | | | | |
Borrowing Capacity and Availability | | | | | | | |
Alternative base rate margin | | | | | | 2.00% | |
LIBOR | Tranche B-2 Term Loans | Minimum | | | | | | | |
2013 Events | | | | | | | |
Interest rate (as a percent) | | | | | | 0.75% | |
LIBOR | Tranche B Term Loans | Minimum | | | | | | | |
2013 Events | | | | | | | |
Interest rate (as a percent) | | | | | | 1.00% | |
Subsequent Event | European Revolving Credit Facility | | | | | | | |
2013 Events | | | | | | | |
Maximum borrowing capacity | € | | | | € 340 | | | |
Subsequent Event | Tranche B-2 Term Loans | | | | | | | |
Borrowing Capacity and Availability | | | | | | | |
Basis spread on variable rate | | | 2.75% | | | | |
Subsequent Event | Tranche B Term Loans | | | | | | | |
Borrowing Capacity and Availability | | | | | | | |
Basis spread on variable rate | | | 3.00% | | | | |
Forecast | Tranche B-2 Term Loans | | | | | | | |
Borrowing Capacity and Availability | | | | | | | |
Basis spread on variable rate | 2.25% | | | | | | |
Alternative base rate margin | 1.25% | | | | | | |
Forecast | Tranche B Term Loans | | | | | | | |
Borrowing Capacity and Availability | | | | | | | |
Basis spread on variable rate | 2.75% | | | | | | |
Alternative base rate margin | 1.75% | | | | | | |
Forecast | LIBOR | Tranche B-2 Term Loans | Minimum | | | | | | | |
2013 Events | | | | | | | |
Interest rate (as a percent) | 0.75% | | | | | | |
Forecast | LIBOR | Tranche B Term Loans | Minimum | | | | | | | |
2013 Events | | | | | | | |
Interest rate (as a percent) | 1.00% | | | | | | |