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Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Mar. 21, 2022
Feb. 08, 2022
Dec. 31, 2012
Subsequent Event [Line Items]              
Gains (losses) on retirement of long-term obligations [1]   $ (145,000) $ (95,000) $ (2,000)      
Secured Debt [Member] | 3.849% Secured Notes [Member]              
Subsequent Event [Line Items]              
Debt Instrument, Face Amount             $ 1,000,000
Debt Instrument, Interest Rate, Stated Percentage   3.90% [2]         3.849%
Subsequent Event              
Subsequent Event [Line Items]              
Gains (losses) on retirement of long-term obligations $ 29,000            
Dividends Payable, Amount Per Share           $ 1.47  
Subsequent Event | Secured Debt [Member] | 3.849% Secured Notes [Member]              
Subsequent Event [Line Items]              
Debt Instrument, Face Amount         $ 1,000,000    
[1] Inclusive of the write-off of the respective deferred financing costs.
[2] Represents the weighted-average stated interest rate.