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Income Taxes - Deferred Income Tax Assets And Liabilities (Detail) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Deferred income tax assets: |  |
Net tax loss carryforwards | $ 1,480 | $ 1,146
Long-term operating lease liabilities | 625 | 657
Accrued liabilities and deferred revenue | 272 | 237
Tax credits | 11 | 17
Depreciation and amortization | 19 | 3
Provision for doubtful accounts | 18 | 8
Other | 100 | 110
Valuation allowance | 167 | 204
Deferred income tax assets | 2,358 | 1,974
Deferred income tax liabilities: |  |
Operating lease right-of-use assets | 614 | 649
Depreciation and amortization | 102 | 105
Prepaid expenses | 23 | 8
Other | 4 | 14
Deferred income tax liabilities under vehicle programs, net | 743 | 776
Deferred income tax assets, net | 1,615 | 1,198
Tax loss carryforwards | 163 | 195
Deferred tax assets | $ 4 | $ 9

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