Debt (Interest Expense Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||||||
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Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Debt Instrument [Line Items] | ||||||||||
| Interest expense | $ 56 | [1] | $ 60 | $ 171 | [2] | $ 175 | ||||
| Capitalized Interest Costs, Including Allowance for Funds Used During Construction | 1 | 1 | 1 | 1 | ||||||
| Consumer financing interest | $ 33 | $ 33 | 99 | 101 | ||||||
| Debt | ||||||||||
| Debt Instrument [Line Items] | ||||||||||
| Cash paid for interest | 164 | 174 | ||||||||
| Non-Recourse Vacation Ownership Debt [Member] | ||||||||||
| Debt Instrument [Line Items] | ||||||||||
| Cash paid for interest | $ 81 | $ 84 | ||||||||
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition This element represents interest incurred for borrowed money which was used to produce goods or render services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of interest capitalized, including amount of allowance for funds used during construction. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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