Debt Debt (Narrative) (Details) $ in Millions, $ in Millions, $ in Millions |
Jun. 30, 2021
USD ($)
|
Jun. 30, 2021
AUD ($)
|
Jun. 30, 2021
NZD ($)
|
Apr. 27, 2021
AUD ($)
|
Apr. 27, 2021
NZD ($)
|
Mar. 31, 2021
AUD ($)
|
Mar. 08, 2021
USD ($)
|
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Non-recourse bank conduit facility [Member] | |||||||||
Debt Instrument [Line Items] | |||||||||
Line of Credit Facility, Maximum Borrowing Capacity | [1] | $ 1,025 | |||||||
Sierra Timeshare 2021-1 | |||||||||
Debt Instrument [Line Items] | |||||||||
Debt instrument, face amount | $ 500 | ||||||||
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 1.57% | ||||||||
Debt Instrument, Advance Rate | 98.00% | ||||||||
AUD/NZD bank conduit Facility (due September 2021) [Member] | Non-recourse bank conduit facility [Member] | |||||||||
Debt Instrument [Line Items] | |||||||||
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 1.65% | 1.65% | |||||||
Line of Credit Facility, Maximum Borrowing Capacity | $ 250 | $ 48 | $ 250 | $ 48 | $ 255 | ||||
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