Debt (Schedule of Debt) (Details) $ in Millions | 3 Months Ended | | |
Jun. 30, 2020USD ($)€ / $ | Feb. 25, 2020USD ($) | Dec. 31, 2019USD ($) |
Debt Instrument [Line Items] | | | |
Debt: | $ 12,982 | | $ 17,089 |
Debt subject to compromise | 4,312 | | |
Total liabilities not subject to compromise | 17,531 | | 22,739 |
Vehicles | | | |
Debt Instrument [Line Items] | | | |
Debt: | 12,924 | | 13,368 |
Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | 58 | | 3,721 |
Debt: | 58 | | 3,721 |
Liabilities Subject Compromise, Unamortized Discount (Premium), Net | 36 | | 0 |
Debt subject to compromise | 4,312 | | 0 |
Corporate Debt Securities | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Unamortized Net Discount | $ 0 | | (34) |
Senior Term Loan | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.51% | | |
Outstanding principal | $ 0 | | 660 |
Liabilities subject to compromise | $ 656 | | 0 |
Senior RCF | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 4.08% | | |
Outstanding principal | $ 0 | | 0 |
Liabilities subject to compromise | 615 | | 0 |
Senior Notes | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 2,700 | | 2,700 |
Senior Notes | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 6.11% | | |
Outstanding principal | $ 0 | | 2,700 |
Liabilities subject to compromise | $ 2,700 | | 0 |
Promissory Notes | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 7.00% | | |
Outstanding principal | $ 0 | | 27 |
Liabilities subject to compromise | $ 27 | | 0 |
Senior Second Priority Secured Notes | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 7.63% | | |
Outstanding principal | $ 0 | | 350 |
Liabilities subject to compromise | $ 350 | | 0 |
Alternative Letter of Credit Facility, 3.25%, Due November 2023 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.25% | | |
Outstanding principal | $ 36 | | 0 |
Senior RCF Letter of Credit Facility, 3.25%, Due June 2021 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.25% | | |
Outstanding principal | $ 2 | | 0 |
Non-Vehicle Debt | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 6.75% | | |
Outstanding principal | $ 20 | | 18 |
Senior Notes, 7.125%, Due 2026 | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 500 | | 500 |
Interest rate | 7.125% | | |
Senior Notes, 6.00%, Due January 2028 | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 900 | | 900 |
Fleet Debt | | | |
Debt Instrument [Line Items] | | | |
Unamortized Net Discount | (75) | | (47) |
Debt: | 12,924 | | 13,368 |
Total | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 4,148 | | 2,644 |
HVF II Series 2013-A | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | | $ 4,900 | |
HVF II Series 2013-A | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.46% | | |
Outstanding principal | $ 4,148 | | 2,644 |
HVF II U.S. Fleet Variable Medium Term Notes | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | 5,192 | | 6,620 |
U.S. Fleet Medium Term Notes 2015 Series 1 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 0 | | 780 |
U.S. Fleet Medium Term Notes 2015 Series 3 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.17% | | |
Outstanding principal | $ 319 | | 371 |
U.S. Fleet Medium Term Notes 2016 Series 2 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.48% | | |
Outstanding principal | $ 512 | | 595 |
U.S. Fleet Medium Term Notes 2016 Series 4 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.16% | | |
Outstanding principal | $ 365 | | 424 |
U.S. Fleet Medium Term Notes 2017 Series 1 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.45% | | |
Outstanding principal | $ 387 | | 450 |
U.S. Fleet Medium Term Notes 2017 Series 2 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.82% | | |
Outstanding principal | $ 318 | | 350 |
U.S. Fleet Medium Term Notes 2018 Series 1 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.58% | | |
Outstanding principal | $ 910 | | 1,000 |
U.S. Fleet Medium Term Notes 2018 Series 2 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.99% | | |
Outstanding principal | $ 183 | | 200 |
U.S. Fleet Medium Term Notes 2018 Series 3 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 4.33% | | |
Outstanding principal | $ 183 | | 200 |
U.S. Fleet Medium Term Notes 2019 Series 1 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 4.05% | | |
Outstanding principal | $ 641 | | 700 |
U.S. Fleet Medium Term Notes 2019 Series 2 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.71% | | |
Outstanding principal | $ 687 | | 750 |
U.S Fleet Medium Term Notes 2019 Series 3 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 2.95% | | |
Outstanding principal | $ 687 | | 800 |
Donlen ABS Program | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 475 | | 286 |
HFLF Series 2013-2 Notes | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 6.10% | | |
Outstanding principal | $ 475 | | 286 |
HFLF Medium Term Notes | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | 1,044 | | 1,375 |
HFLF Series 2016-1 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 0 | | 34 |
HFLF Series 2017-1 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 2.51% | | |
Outstanding principal | $ 139 | | 229 |
HFLF Series 2018-1 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 2.59% | | |
Outstanding principal | $ 353 | | 462 |
HFLF Series 2019-1 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 2.23% | | |
Outstanding principal | $ 552 | | 650 |
Other Fleet Debt | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 2,140 | | 2,490 |
US Vehicle RCF | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 5.73% | | |
Outstanding principal | $ 93 | | 146 |
European Fleet Notes | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 813 | | 810 |
Foreign currency exchange rate (EURO to USD) | € / $ | 1.12 | | |
European Fleet Notes | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 5.07% | | |
Outstanding principal | $ 813 | | 810 |
4.125% Senior Notes due October 2021 | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 252 | | 251 |
Interest rate | 4.125% | | |
European Fleet Notes, 5.500%, Due March 2023 | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 561 | | 559 |
Interest rate | 5.50% | | |
European Securitization | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 1.60% | | |
Outstanding principal | $ 624 | | 766 |
Canadian Securitization | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.73% | | |
Outstanding principal | $ 170 | | 241 |
Donlen Canadian Securitization, Due December 2022 | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 2.31% | | |
Outstanding principal | $ 25 | | 24 |
Australian Securitization | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 1.74% | | |
Outstanding principal | $ 137 | | 177 |
New Zealand Revolving Credit Facility | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 2.93% | | |
Outstanding principal | $ 45 | | 50 |
UK Leveraged Financing | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.05% | | |
Outstanding principal | $ 210 | | 247 |
Other Vehicle Debt | Non-vehicle | | | |
Debt Instrument [Line Items] | | | |
Average interest rate (as a percent) | 3.61% | | |
Outstanding principal | $ 23 | | 29 |
Senior Assets Based Line of Credit Facility | | | |
Debt Instrument [Line Items] | | | |
Fixed charge coverage ratio, number of quarters | 1 year | | |
Senior Notes 6.250 Percent Due 2022 [Member] | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 500 | | 500 |
Interest rate | 6.25% | | |
5.500% Senior Notes due October 2024 | | | |
Debt Instrument [Line Items] | | | |
Outstanding principal | $ 800 | | $ 800 |
Interest rate | 5.50% | | |