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Debt (Term Loan under the Senior Credit Agreement) (Narrative) (Details) - USD ($)
12 Months Ended
Apr. 11, 2018
Dec. 31, 2021
Dec. 31, 2020
Aug. 04, 2020
Debt Instrument [Line Items]        
Debt instrument, principal amount   $ 12,396,000,000 $ 11,180,000,000  
2018 Term Loan [Member]        
Debt Instrument [Line Items]        
Debt instrument, principal amount $ 2,400,000,000 $ 2,316,000,000 $ 2,340,000,000  
Debt instrument, maturity date   Apr. 11, 2025    
Percentage of par value price for issuance of term loan 99.75%      
Accruing interest rate during the period   1.86%    
Quarterly payments   $ 6,000,000.0    
Financing fees $ 16,800,000      
Repayment of term loans   24,000,000.0    
Debt instrument, principal balance   2,300,000,000    
2018 Term Loan [Member] | Cash Flow Hedges [Member]        
Debt Instrument [Line Items]        
Notional amount       $ 1,950,000,000
2018 Term Loan [Member] | Interest Rate Swap [Member]        
Debt Instrument [Line Items]        
Notional amount   $ 1,950,000,000   $ 1,950,000,000
Derivative fixed interest rate   1.874%   1.874%
Base Rate [Member] | 2018 Term Loan [Member]        
Debt Instrument [Line Items]        
Basis spread on variable interest rate 0.75%      
Eurodollar [Member] | 2018 Term Loan [Member]        
Debt Instrument [Line Items]        
Basis spread on variable interest rate 1.75%      
London Interbank Offered Rate (LIBOR) [Member] | 2018 Term Loan [Member] | Interest Rate Swap [Member]        
Debt Instrument [Line Items]        
Derivative basis spread on variable interest rate   1.75%   1.75%
Minimum [Member] | Base Rate [Member] | 2018 Term Loan [Member]        
Debt Instrument [Line Items]        
Basis spread on variable interest rate 0.00%      
Minimum [Member] | Eurodollar [Member] | 2018 Term Loan [Member]        
Debt Instrument [Line Items]        
Basis spread on variable interest rate 0.00%