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Debt - Additional Information (Detail)
1 Months Ended 12 Months Ended
Jan. 21, 2019
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2019
EUR (€)
Dec. 31, 2018
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2021
GBP (£)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
EUR (€)
Nov. 30, 2016
GBP (£)
Oct. 31, 2016
EUR (€)
Aug. 31, 2015
USD ($)
Jun. 30, 2015
USD ($)
Sep. 30, 2014
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2011
CHF (SFr)
Sep. 30, 2010
GBP (£)
Debt Instrument [Line Items]                                  
Maturities of long-term debt outstanding year one   $ 0                              
Maturities of long-term debt outstanding year two   300,000,000                              
Maturities of long-term debt outstanding year three   425,000,000                              
Maturities of long-term debt outstanding year four   441,300,000                       $ 300,000,000      
Maturities of long-term debt outstanding year five   335,300,000                              
Maturities of long-term debt outstanding thereafter   $ 732,100,000                              
Debt instrument, face amount | €                     € 200,000,000            
Interest rate on senior notes                     1.53%            
Revolving credit facility expiration period   5 years                              
Weighted average interest rate on total debt borrowings outstanding   3.10%           3.00%                  
Revolving Credit Facility Borrowings                                  
Debt Instrument [Line Items]                                  
Total borrowing capacity under revolving credit facility   $ 1,500,000,000                              
Additional borrowing capacity under revolving credit facility   500,000,000                              
Available borrowing capacity under revolving credit facility   2,447,500,000                              
Borrowings outstanding   $ 314,500,000           $ 72,100,000                  
Percentage of weighted average interest rate on revolving credit facility   1.34%           1.84%                  
Revolving Credit Facility Borrowings | Letter of Credit                                  
Debt Instrument [Line Items]                                  
Borrowings outstanding   $ 38,000,000           $ 30,200,000                  
Accordion Feature                                  
Debt Instrument [Line Items]                                  
Available borrowing capacity under revolving credit facility   500,000,000                              
Foreign Subsidiaries                                  
Debt Instrument [Line Items]                                  
Available borrowing capacity under revolving credit facility   56,800,000           53,000,000                  
Borrowings outstanding   2,000,000           0                  
Swiss franc 2.44% senior note due December 2021                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount                             $ 59,700,000 SFr 55,000,000  
Interest rate on senior notes                             2.44% 2.44%  
Total debt, gross   0           62,190,000                  
Senior Notes                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount     $ 575,000,000           € 75,000,000                
Proceeds from funding $ 100,000,000   $ 475,000,000 € 75,000,000 $ 85,300,000                        
Weighted average interest rate     3.93%           3.93%                
Senior Notes | 1.34% Due October 2026                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount   341,300,000                 € 300,000,000            
Interest rate on senior notes                     1.34%            
Senior Notes | 1.53% Due October 2028                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount   227,500,000                              
Senior Notes | 2.59% Due November 2028                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount   203,000,000               £ 150,000,000              
Interest rate on senior notes                   2.59%              
Senior Notes | 2.70% Due November 2031                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount   101,500,000               £ 75,000,000              
Interest rate on senior notes                   2.70%              
British pound 4.68% senior note due September 2020                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount           $ 102,900,000 £ 80,000,000                   £ 80,000,000
Interest rate on senior notes           4.68% 4.68%                    
U.S. dollar 3.73% senior notes due September 2024                                  
Debt Instrument [Line Items]                                  
Interest rate on senior notes                           3.73%      
Total debt, gross   300,000,000           300,000,000                  
U.S. dollar 3.83% senior notes due September 2026                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount                           $ 100,000,000      
Interest rate on senior notes                           3.83%      
Total debt, gross   100,000,000           100,000,000                  
U.S. dollar 3.98% senior notes due September 2029                                  
Debt Instrument [Line Items]                                  
Interest rate on senior notes                           3.98%      
Total debt, gross   100,000,000           100,000,000                  
U.S. dollar 3.91% senior notes due June 2025                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount                         $ 50,000,000        
Interest rate on senior notes                         3.91%        
Total debt, gross   50,000,000           50,000,000                  
U.S. dollar 3.96% senior notes due August 2025                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount                       $ 100,000,000          
Interest rate on senior notes                       3.96%          
Total debt, gross   100,000,000           100,000,000                  
U.S. dollar 4.45% senior notes due August 2035                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount                       $ 50,000,000          
Interest rate on senior notes                       4.45%          
Total debt, gross   50,000,000           $ 50,000,000                  
Secured Debt                                  
Debt Instrument [Line Items]                                  
Debt instrument, face amount   $ 800,000,000                              
Debt instrument, term   5 years                              
Total debt, gross   $ 150,000,000