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BORROWINGS - Additional information (Details)
€ in Millions, £ in Millions, kr in Millions, $ in Millions
1 Months Ended
Sep. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
Nov. 23, 2021
USD ($)
Feb. 28, 2019
USD ($)
Sep. 30, 2022
SEK (kr)
Sep. 30, 2022
GBP (£)
Sep. 30, 2022
EUR (€)
Apr. 01, 2022
USD ($)
Feb. 25, 2022
USD ($)
Dec. 31, 2021
SEK (kr)
Dec. 31, 2021
GBP (£)
Dec. 31, 2021
EUR (€)
Dec. 31, 2021
AUD ($)
Nov. 04, 2021
USD ($)
Feb. 25, 2021
USD ($)
Nov. 04, 2020
USD ($)
Sep. 29, 2020
USD ($)
Sep. 24, 2020
USD ($)
Aug. 03, 2020
USD ($)
Debt Instrument [Line Items]                                      
Borrowings under credit facilities $ 650,989,000 $ 655,189,000                                  
Notes                                      
Debt Instrument [Line Items]                                      
Percentage of notes payable due upon default 0.6667       0.6667 0.6667 0.6667                        
February 2019 Credit Facility | Line of Credit                                      
Debt Instrument [Line Items]                                      
Commitment aggregate amount $ 1,100,000,000     $ 800,000,000       $ 1,100,000,000 $ 965,000,000         $ 875,000,000          
Line of credit facility commitment aggregate value       $ 1,200,000,000       $ 1,500,000,000 $ 1,500,000,000                    
Debt instrument, basis spread on variable floor rate (as percent)       1.00%                              
Percentage of unused portion of credit facility, greater than two-third of commitments (as percent)       0.50%                              
Percentage of unused portion of credit facility, less than two-third of commitments (as percent)       0.375%                              
Debt issuance costs, financing fees       $ 6,400,000                              
Effective interest rate 4.094%       4.094% 4.094% 4.094%                        
February 2019 Credit Facility | Line of Credit | Interest Period Of One Month                                      
Debt Instrument [Line Items]                                      
Debt instrument, credit spread adjustment       0.0010                              
February 2019 Credit Facility | Line of Credit | Interest Period Of Three Month                                      
Debt Instrument [Line Items]                                      
Debt instrument, credit spread adjustment       0.0015                              
February 2019 Credit Facility | Line of Credit | Interest Period Of Six Month                                      
Debt Instrument [Line Items]                                      
Debt instrument, credit spread adjustment       0.0025                              
February 2019 Credit Facility | Fair Value, Inputs, Level 3 | Line of Credit                                      
Debt Instrument [Line Items]                                      
Fair value of long-term debt $ 651,000,000 655,200,000                                  
February 2019 Credit Facility | Base Rate | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate       1.25%                              
February 2019 Credit Facility | Base Rate | Line of Credit | External Credit Rating, Investment Grade                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate       1.00%                              
February 2019 Credit Facility | SOFR | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate       2.25%                              
February 2019 Credit Facility | SOFR | Line of Credit | External Credit Rating, Investment Grade                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate       2.00%                              
February 2019 Credit Facility | Federal Funds Purchased | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate       0.50%                              
February 2019 Credit Facility | Overnight Bank Funding Rate | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate       0.50%                              
February 2019 Credit Facility | One-Month Secured Overnight Financing Rate (SOFR) | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate       1.00%                              
Debt instrument, credit spread adjustment       0.0010                              
February 2019 Credit Facility | Applicable Rate | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate       2.00%                              
February 2019 Credit Facility | Applicable Rate | Line of Credit | External Credit Rating, Non Investment Grade                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate       2.25%                              
February 2019 Credit Facility | Screen Rate | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate       2.20%                              
February 2019 Credit Facility | Screen Rate | Line of Credit | External Credit Rating, Non Investment Grade                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate       2.45%                              
Debt Denominated In U.S Dollars | Line of Credit                                      
Debt Instrument [Line Items]                                      
Borrowings under credit facilities $ 437,500,000 $ 377,000,000                                  
Effective interest rate 4.695% 2.125%     4.695% 4.695% 4.695%     2.125% 2.125% 2.125% 2.125%            
Debt Denominated In U.S Dollars | One-Month Secured Overnight Financing Rate (SOFR) | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate 2.595%                                    
Debt Denominated In U.S Dollars | LIBOR | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate   0.125%                                  
Debt Denominated In Swedish Kronas | Line of Credit                                      
Debt Instrument [Line Items]                                      
Borrowings under credit facilities $ 1,200,000 $ 1,400,000     kr 12.8         kr 12.8                  
Effective interest rate 3.063% 2.00%     3.063% 3.063% 3.063%     2.00% 2.00% 2.00% 2.00%            
Debt Denominated In Swedish Kronas | Stockholm Interbank Offered Rate (STIBOR) | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate 1.063% 0.00%                                  
Debt Denominated In British Pounds | Line of Credit                                      
Debt Instrument [Line Items]                                      
Borrowings under credit facilities $ 76,600,000 $ 92,500,000       £ 68.6         £ 68.3                
Effective interest rate 3.723% 2.125%     3.723% 3.723% 3.723%     2.125% 2.125% 2.125% 2.125%            
Debt Denominated In British Pounds | Sterling Overnight Index Average (SONIA) | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate 1.723%                                    
Debt Denominated In British Pounds | GBP LIBOR | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate   0.125%                                  
Debt Denominated In Euro | Line of Credit                                      
Debt Instrument [Line Items]                                      
Borrowings under credit facilities $ 135,800,000 $ 157,600,000         € 138.6         € 138.6              
Effective interest rate 2.375% 2.00%     2.375% 2.375% 2.375%     2.00% 2.00% 2.00% 2.00%            
Debt Denominated In Euro | Euro Interbank Offered Rate (EURIBOR) | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate 0.375% 0.00%                                  
Debt Denominated In Australia Dollars | Line of Credit                                      
Debt Instrument [Line Items]                                      
Borrowings under credit facilities   $ 26,600,000                     $ 36.6            
Effective interest rate   2.25%               2.25% 2.25% 2.25% 2.25%            
Debt Denominated In Australia Dollars | AUD Screen Rate | Line of Credit                                      
Debt Instrument [Line Items]                                      
Debt instrument, basis spread on variable rate   25.00%                                  
September 24, 2020 - August 2025 Notes | Notes                                      
Debt Instrument [Line Items]                                      
Aggregate principal amount                                 $ 25,000,000 $ 25,000,000 $ 50,000,000
Fixed interest rate 4.66%       4.66% 4.66% 4.66%                       4.66%
September 24, 2020 - August 2025 Notes | Fair Value, Inputs, Level 3 | Notes                                      
Debt Instrument [Line Items]                                      
Fair value of long-term debt $ 45,900,000 $ 52,200,000                                  
November 5, 2020 - Series B Notes | Notes                                      
Debt Instrument [Line Items]                                      
Aggregate principal amount                               $ 62,500,000      
Fixed interest rate 4.25%       4.25% 4.25% 4.25%                 4.25%      
November 5, 2020 - Series B Notes | Fair Value, Inputs, Level 3 | Notes                                      
Debt Instrument [Line Items]                                      
Fair value of long-term debt $ 55,800,000 64,100,000                                  
November 5, 2020 - Series C Notes | Notes                                      
Debt Instrument [Line Items]                                      
Aggregate principal amount                               $ 112,500,000      
Fixed interest rate 4.75%       4.75% 4.75% 4.75%                 4.75%      
November 5, 2020 - Series C Notes | Fair Value, Inputs, Level 3 | Notes                                      
Debt Instrument [Line Items]                                      
Fair value of long-term debt $ 95,100,000 115,300,000                                  
Series B And Series C Senior Unsecured Notes Due November | Notes                                      
Debt Instrument [Line Items]                                      
Interest rate extended                               0.0075      
Investment grade conditions                               0.0150      
February 25, 2021 Series D Notes | Notes                                      
Debt Instrument [Line Items]                                      
Aggregate principal amount                             $ 80,000,000        
Fixed interest rate 3.41%       3.41% 3.41% 3.41%               3.41%        
February 25, 2021 Series D Notes | Fair Value, Inputs, Level 3 | Notes                                      
Debt Instrument [Line Items]                                      
Fair value of long-term debt $ 69,200,000 79,200,000                                  
February 25, 2021 Series E Notes | Notes                                      
Debt Instrument [Line Items]                                      
Aggregate principal amount                             $ 70,000,000        
Fixed interest rate 4.06%       4.06% 4.06% 4.06%               4.06%        
February 25, 2021 Series E Notes | Fair Value, Inputs, Level 3 | Notes                                      
Debt Instrument [Line Items]                                      
Fair value of long-term debt $ 56,900,000 68,700,000                                  
Series D And Series E Senior Unsecured Notes Due February | Notes                                      
Debt Instrument [Line Items]                                      
Interest rate extended                             0.0075        
Investment grade conditions                             0.0150        
November 23, 2021 - November 2026 Notes | Notes                                      
Debt Instrument [Line Items]                                      
Aggregate principal amount     $ 350,000,000                                
Fixed interest rate 3.30%   3.30%   3.30% 3.30% 3.30%                        
Redemption percentage on purchase price (as percent)     100.00%                                
November 23, 2021 - November 2026 Notes | Fair Value, Inputs, Level 3 | Notes                                      
Debt Instrument [Line Items]                                      
Fair value of long-term debt $ 284,900,000 $ 346,800,000