Debt (Interest Expense Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
|
Debt Instrument [Line Items] | ||||
Interest expense | $ 47 | $ 46 | $ 100 | $ 87 |
Capitalized Interest Costs, Including Allowance for Funds Used During Construction | 1 | 1 | 1 | 1 |
Consumer financing interest | 20 | 25 | 44 | 50 |
consumer finance interest [Member] | ||||
Debt Instrument [Line Items] | ||||
Consumer financing interest | $ 20 | $ 25 | 44 | 50 |
Debt | ||||
Debt Instrument [Line Items] | ||||
Cash paid for interest | 105 | 81 | ||
Non-Recourse Vacation Ownership Debt [Member] | ||||
Debt Instrument [Line Items] | ||||
Cash paid for interest | $ 31 | $ 37 |