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Income Taxes - Components of Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred tax assets: |  |
Provision for accrued expenses | $ 47 | $ 42
Deferred loyalty rewards | 217 | 204
Net operating loss and tax credit carryforwards | 130 | 314
Property and equipment | 25 | 23
Capitalized research and development | 391 | 325
Operating lease liabilities | 118 | 130
Long-term investments | 108 | 168
Other | 59 | 79
Total deferred tax assets | 1,095 | 1,285
Less valuation allowance | (176) | (244)
Net deferred tax assets | 919 | 1,041
Deferred tax liabilities: |  |
Goodwill and intangible assets | (308) | (345)
Anticipatory foreign tax credits | (17) | (16)
Operating lease ROU assets | (115) | (127)
Other | (2) | 0
Total deferred tax liabilities | (442) | (488)
Net deferred tax assets | $ 477 | $ 553

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