Property and Equipment, Net - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Property, Plant, and Equipment [Abstract] | ||||
| Amortization and depreciation expense related to property and equipment other than website development costs | $ 3 | $ 3 | $ 8 | $ 10 |
| Capitalization of website development costs | 39 | 45 | 129 | 144 |
| Capitalized computer software, amortization | $ 41 | $ 42 | $ 124 | $ 125 |
| X | ||||||||||
- Definition Amount of increase in capitalized cost for software to be sold, leased, or marketed. Excludes capitalized cost for internal-use software. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of amortization expense for capitalized cost for software to be sold, leased, or marketed. Excludes capitalized cost for internal-use software. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of expense charged against earnings to allocate the cost of tangible and intangible assets over their remaining economic lives, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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