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Debt - Credit Agreements (Details)
SFr in Millions, $ in Millions
12 Months Ended
Jul. 12, 2021
USD ($)
Dec. 11, 2019
USD ($)
Dec. 31, 2023
USD ($)
Jan. 12, 2024
CHF (SFr)
Dec. 11, 2019
CHF (SFr)
Oct. 27, 2015
USD ($)
Jan. 31, 2012
USD ($)
Revolving lines of credit              
Maximum commitment     $ 753.6        
Debt Instrument Prepayment Percentage Of Aggregate Principal Amount 10.00%   10.00%        
Minimum interest coverage ratio required     3.5        
Debt Instrument redemption price     100.00%        
Adjusted LIBOR              
Revolving lines of credit              
Interest rate added to base rate (as a percent)     1.00%        
2019 Credit Agreement              
Revolving lines of credit              
Maximum commitment   $ 600.0   SFr 230      
Revolving credit facility term   5 years          
Incremental facility   $ 250.0          
Maximum Leverage Ratio     3.5        
Minimum coverage ratio     2.5        
2019 Credit Agreement | Minimum              
Revolving lines of credit              
Facility fee (as a percent)     0.10%        
2019 Credit Agreement | Maximum              
Revolving lines of credit              
Facility fee (as a percent)     0.20%        
2019 Credit Agreement | Greatest of prime rate, federal funds rate plus spread and adjusted LIBOR plus spread | Minimum              
Revolving lines of credit              
Interest rate added to base rate (as a percent)     0.10%        
2019 Credit Agreement | Greatest of prime rate, federal funds rate plus spread and adjusted LIBOR plus spread | Maximum              
Revolving lines of credit              
Interest rate added to base rate (as a percent)     0.50%        
2019 Credit Agreement | Prime rate              
Revolving lines of credit              
Variable interest rate base     prime rate        
2019 Credit Agreement | Federal Funds              
Revolving lines of credit              
Variable interest rate base     federal funds effective rate        
2019 Credit Agreement | LIBOR [Member]              
Revolving lines of credit              
Variable interest rate base     LIBOR        
2019 Credit Agreement | Adjusted LIBOR              
Revolving lines of credit              
Variable interest rate base     adjusted        
2019 Term Loan Agreement With Ballon Payment Due 2026              
Revolving lines of credit              
Maximum commitment   $ 300.0          
Revolving credit facility term   7 years          
2019 Term Loan Agreement With Ballon Payment Due 2026 | Prime rate              
Revolving lines of credit              
Variable interest rate base   prime rate          
2019 Term Loan Agreement With Ballon Payment Due 2026 | Federal Funds              
Revolving lines of credit              
Interest rate added to base rate (as a percent)   1.00%          
2019 Term Loan Agreement With Ballon Payment Due 2026 | Adjusted LIBOR              
Revolving lines of credit              
Variable interest rate base   USD LIBOR          
Interest rate added to base rate (as a percent)   1.00%          
2019 Term Loan Agreement With Ballon Payment Due 2026 | Adjusted LIBOR | Minimum              
Revolving lines of credit              
Interest rate added to base rate (as a percent)   0.10%          
2019 Term Loan Agreement With Ballon Payment Due 2026 | Adjusted LIBOR | Maximum              
Revolving lines of credit              
Interest rate added to base rate (as a percent)   0.50%          
2019 Term Loan Agreement With Ballon Payment Due 2026 | USD LIBOR              
Revolving lines of credit              
Variable interest rate base   USD LIBOR          
2019 Term Loan Agreement With Ballon Payment Due 2026 | USD LIBOR | Minimum              
Revolving lines of credit              
Interest rate added to base rate (as a percent)   1.00%          
2019 Term Loan Agreement With Ballon Payment Due 2026 | USD LIBOR | Maximum              
Revolving lines of credit              
Interest rate added to base rate (as a percent)   1.50%          
2019 Note Purchase Agreement Due 2029              
Revolving lines of credit              
Interest rate added to base rate (as a percent)   1.01%          
Additional aggregate principal amount that may be issued   $ 297.0          
2019 Note Purchase Agreement              
Revolving lines of credit              
Interest rate added to base rate (as a percent)   1.01%          
Senior notes             $ 240.0
Additional aggregate principal amount that may be issued | SFr         SFr 297    
Prepayment price as percentage of principal amount, in the event of a change in control   $ 100.0          
Maximum leverage ratio allowed   3.5          
Minimum interest coverage ratio required   2.5          
Priority debt as a percentage of consolidated net worth   15.00%          
Debt Instrument redemption price   10.00%          
4.31% Series 2012A Senior Notes, Tranche C, due January 18, 2022              
Revolving lines of credit              
Facility fee (as a percent)           4.31%  
Senior notes           $ 105.0 $ 105.0
Interest rate, stated percentage             4.31%
4.46% Series 2012A Senior Notes, Tranche D, due January 18, 2024              
Revolving lines of credit              
Facility fee (as a percent)           4.46%  
Senior notes           $ 100.0 $ 100.0
Interest rate, stated percentage             4.46%
Switzerland Francs Notes Under The 2021 Notes Purchase Agreement Due 2031              
Revolving lines of credit              
Senior notes $ 300.0            
Interest rate, stated percentage 0.88%            
Euro Notes Under The 2021 Purchase Agreement Due 2031              
Revolving lines of credit              
Senior notes $ 150.0            
Interest rate, stated percentage 1.03%            
Debt instument our date Dec. 08, 2031            
2021 Notes Under Purchase Agreement              
Revolving lines of credit              
Debt Instrument, Frequency of Periodic Payment semi-annually on June 7 and December 7 of each year            
Debt Instrument, Payment Terms semi-annually            
Debt Instrument, Date of First Required Payment Jun. 07, 2022            
Prepayment price as percentage of principal amount, in the event of a change in control $ 100.0            
Maximum leverage ratio allowed 3.5            
Minimum interest coverage ratio required 1            
Priority debt as a percentage of consolidated net worth 15.00%            
3.16% Series 2012A Senior Notes, Tranche A, due January 18, 2017              
Revolving lines of credit              
Senior notes             $ 20.0
Interest rate, stated percentage             3.16%
3.74% Series 2012A Senior Notes, Tranche B, due January 18, 2019              
Revolving lines of credit              
Senior notes             $ 15.0
Interest rate, stated percentage             3.74%
2012 Note Purchase Agreement Due 2024              
Revolving lines of credit              
Minimum interest coverage ratio required     2.5        
2012 Note Purchase Agreement              
Revolving lines of credit              
Prepayment price as percentage of principal amount, in the event of a change in control     $ 100.0        
Priority debt as a percentage of consolidated net worth     25.00%        
Period for interest coverage ratio     4 days        
2012 Note Purchase Agreement | Minimum              
Revolving lines of credit              
Debt instrument prepayment notice period     30 days        
2012 Note Purchase Agreement | Maximum              
Revolving lines of credit              
Debt instrument prepayment notice period     60 days