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Long-Term Debt - WLV Senior Notes (Details) - Senior Notes - USD ($) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2018 | May 11, 2017 | Feb. 18, 2015 | May 22, 2013
WRF Senior Secured Credit Facilities | Subsidiary Issuer |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt covenant, percentage of total assets | 15.00% |  |  |  |
WLV |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Payment default classification period for interest payment | 30 days |  |  |  |
WLV | WLV 4 1/4% Senior Notes, due 2023 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, aggregate principal amount |  |  |  |  | $ 500,000,000.0
Debt instrument, interest rate | 4.25% |  |  |  | 4.25%
WLV | WLV 5 1/2% Senior Notes, due 2025 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, aggregate principal amount |  |  |  | $ 1,800,000,000 |
Debt instrument, interest rate | 5.50% |  |  | 5.50% |
Principal amount purchased |  | $ 20,000,000.0 |  |  |
WLV | WLV 5 1/4% Senior Notes, due 2027 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, aggregate principal amount |  |  | $ 900,000,000.0 |  |
Debt instrument, interest rate | 5.25% |  | 5.25% |  |

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