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Debt - Credit Agreements (Details)
Mar. 31, 2022
USD ($)
Mar. 18, 2022
measurement
Mar. 17, 2022
USD ($)
measurement
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]          
Leveraged leases, adjusted covenant ratio | measurement   7.0 6.5    
Debt (inclusive of discount) $ 10,328,276,000     $ 9,364,451,000 $ 8,797,424,000
Revolving Credit Facility          
Debt Instrument [Line Items]          
Letters of credit outstanding 3,056,000     3,039,000  
Remaining amount available for borrowing under credit facility 1,596,944,000     1,746,961,000  
New Credit Agreement | Revolving Credit Facility          
Debt Instrument [Line Items]          
Maximum borrowing capacity 2,250,000,000   $ 1,750,000,000 1,750,000,000  
Debt (inclusive of discount) $ 650,000,000     $ 0 $ 0
Average interest rate 2.20%     1.90% 1.90%
Term Loan A | Term Loan Facility          
Debt Instrument [Line Items]          
Principal Amount $ 250,000,000     $ 250,000,000  
Debt (inclusive of discount) $ 250,000,000     $ 203,125,000 $ 215,625,000
Average interest rate 2.10%     1.90% 1.90%
Term B Loan Facility | Term Loan Facility          
Debt Instrument [Line Items]          
Principal Amount $ 700,000,000        
Debt (inclusive of discount) $ 672,000,000        
Average interest rate 2.90%