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Bank credit lines and loan facilities - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Apr. 30, 2023
Jan. 31, 2023
Jun. 30, 2023
Jun. 30, 2022
May 02, 2023
Jan. 13, 2023
Dec. 31, 2022
Jul. 01, 2021
Debt Instrument [Line Items]                    
Drawdown of bank credit lines and loan facilities         $ 230,000 $ 25,000        
Long-term debt at fair value $ 4,310,100       $ 4,310,100          
Senior secured credit facility and senior secured notes | Senior Secured Term Loan                    
Debt Instrument [Line Items]                    
Debt discount paid                   $ 27,600
Senior Secured Term Loan | Minimum                    
Debt Instrument [Line Items]                    
Basis spread on variable rate (in percent) 0.50%                  
Senior Secured Term Loan | SOFR                    
Debt Instrument [Line Items]                    
Basis spread on variable rate (in percent) 2.25%                  
Senior Secured Term Loan | Senior Secured Term Loan                    
Debt Instrument [Line Items]                    
Debt instrument, principal amount                   $ 5,515,000
Debt instrument, interest rate 7.41%       7.41%       7.09% 1.00%
Repayments of senior debt $ 150,000 $ 250,000                
Interest paid 74,000 75,300                
Payments of debt restructuring costs 1,200 $ 2,200                
Senior Secured Revolving Loan Facility | Base rate | Variable rate component one                    
Debt Instrument [Line Items]                    
Basis spread on variable rate (in percent)         0.60%          
Senior Secured Revolving Loan Facility | Base rate | Maximum | Variable rate component one                    
Debt Instrument [Line Items]                    
Basis spread on variable rate (in percent)         1.00%          
Senior Secured Revolving Loan Facility | Base rate | Minimum | Variable rate component one                    
Debt Instrument [Line Items]                    
Basis spread on variable rate (in percent)         0.25%          
Senior Secured Revolving Loan Facility | SOFR | Variable rate component two                    
Debt Instrument [Line Items]                    
Basis spread on variable rate (in percent)         1.60%          
Senior Secured Revolving Loan Facility | SOFR | Maximum | Variable rate component two                    
Debt Instrument [Line Items]                    
Basis spread on variable rate (in percent)         2.00%          
Senior Secured Revolving Loan Facility | SOFR | Minimum | Variable rate component two                    
Debt Instrument [Line Items]                    
Basis spread on variable rate (in percent)         1.25%          
Senior Secured Revolving Loan Facility | Senior Secured Revolving Loan Facility                    
Debt Instrument [Line Items]                    
Repayments of senior debt $ 80,000                  
Senior Secured Revolving Loan Facility | Senior Secured Revolving Loan Facility | Senior Secured Revolving Loan Facility                    
Debt Instrument [Line Items]                    
Debt instrument, maximum borrowing capacity             $ 500,000     $ 300,000
Debt instrument, interest rate 6.51% 6.17% 6.25%   6.51%          
Drawdown of bank credit lines and loan facilities   $ 80,000 $ 50,000 $ 100,000            
Senior Secured Revolving Loan Facility | Senior Secured Revolving Loan Facility | Senior Secured Revolving Loan Facility | Maximum                    
Debt Instrument [Line Items]                    
Debt instrument, interest rate       5.89%            
Senior Secured Revolving Loan Facility | Senior Secured Revolving Loan Facility | Senior Secured Revolving Loan Facility | Minimum                    
Debt Instrument [Line Items]                    
Debt instrument, interest rate               5.80%    
Senior Secured Revolving Loan Facility | Senior Secured Revolving Loan Facility | Senior Secured Revolving Loan Facility | SOFR                    
Debt Instrument [Line Items]                    
Basis spread on variable rate (in percent) 1.25% 1.25% 1.25% 1.25%            
Senior Secured Notes | Senior Secured Notes                    
Debt Instrument [Line Items]                    
Debt instrument, principal amount                   $ 500,000
Debt instrument, interest rate 2.88%       2.88%       2.88% 2.875%