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Fair Value - Narrative (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Senior notes $ 2,724,394 $ 2,861,113
Total assets and liabilities measured at fair value 23,800,000 26,500,000
Total assets and liabilities measured at fair value priced using non-binding broker quotes $ 7,700 $ 150,100
Total assets and liabilities measured at fair value priced using non-binding broker quotes (percentage) 0.00% 0.60%
Unsecured debt | Senior Notes    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Senior notes $ 2,700,000 $ 2,900,000
Estimated fair value of senior notes $ 3,300,000 $ 3,700,000