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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
Accounting Policies [Abstract] |
Disaggregation of Revenue [Table Text Block] | The following table presents the Company’s revenues disaggregated by geography.
| Year Ended December 31,
| 2020 |  | 2019
Americas | $ | 3,965 |  |  | $ | 6,352 |
Europe, Middle East and Africa | 1,127 |  |  | 2,222 |
Asia and Australasia | 310 |  |  | 598 |
Total revenues | $ | 5,402 |  |  | $ | 9,172 |
The following table presents the Company’s revenues disaggregated by brand.
| Year Ended December 31,
| 2020 |  | 2019
Avis | $ | 2,961 |  |  | $ | 5,250 |
Budget | 1,908 |  |  | 3,179 |
Other | 533 |  |  | 743 |
Total revenues | $ | 5,402 |  |  | $ | 9,172 |
________ Other includes Zipcar and other operating brands.
Deferred Revenue, by Arrangement, Disclosure [Table Text Block] | The following table presents changes in deferred revenue associated with the Company’s customer loyalty program.
| Year Ended December 31,
| 2020 |  | 2019
Balance, January 1 | $ | 59 |  |  | $ | 64 |
Revenue deferred | 26 |  |  | 17 |
Revenue recognized | (51) |  |  | (22) |
Balance, December 31 | $ | 34 |  |  | $ | 59 |
_______ At December 31, 2020 and 2019, $17 million and $22 million was included in accounts payable and other current liabilities, respectively, and $17 million and $37 million, respectively, in other non-current liabilities. Non-current amounts are expected to be recognized as revenue within two to three years.
Cash and Cash Equivalents, Program Cash and Restricted Cash [Table Text Block] | The following table provides a detail of cash and cash equivalents, program and restricted cash reported within the Consolidated Balance Sheets to the amounts shown in the Consolidated Statements of Cash Flows:
| As of December 31,
| 2020 |  | 2019
Cash and cash equivalents | $ | 692 |  |  | $ | 686 |
Program cash | 72 |  |  | 211 |
Restricted cash (a) | 1 |  |  | 3 |
Total cash and cash equivalents, program and restricted cash | $ | 765 |  |  | $ | 900 |
_________ (a)Included within other current assets.
Schedule of Estimated Useful Lives | Useful lives are as follows:
Buildings | 30 years
Furniture, fixtures & equipment | 3 to 10 years
Capitalized software | 3 to 7 years
Buses and support vehicles | 4 to 15 years

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