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DERIVATIVE INSTRUMENTS - Narrative (Details)
€ in Millions, shares in Millions, SFr in Millions, $ in Millions
1 Months Ended
Feb. 29, 2024
USD ($)
shares
Dec. 31, 2023
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2025
EUR (€)
Apr. 30, 2025
USD ($)
Apr. 30, 2025
CHF (SFr)
Feb. 28, 2025
USD ($)
Jan. 31, 2025
USD ($)
Jan. 31, 2025
CHF (SFr)
Jun. 30, 2024
USD ($)
Jun. 30, 2024
EUR (€)
Nov. 30, 2023
USD ($)
Jul. 26, 2023
Jun. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Jun. 30, 2022
USD ($)
Nov. 30, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]                                  
Notional amount             $ 191.1                    
Stock repurchase program, authorized amount                       $ 294.0     $ 196.0 $ 200.0  
2030 Dollar Senior Secured Notes due July 2030 | Senior Notes                                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                                  
Stated interest rate (as a percent)                         6.625%        
2030 Dollar Senior Secured Notes due July 2030 | Senior Notes | Switzerland, Francs                                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                                  
Stated interest rate (as a percent)               2.671% 2.671%       6.625%        
2029 Dollar Senior Secured Notes due January 2029 | Senior Notes                                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                                  
Stated interest rate (as a percent)                                 4.75%
2029 Dollar Senior Secured Notes due January 2029 | Senior Notes | Switzerland, Francs                                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                                  
Stated interest rate (as a percent)         1.248% 1.248%                     4.75%
June 2022 Forward Contracts                                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                                  
Stock repurchase program, authorized amount                             $ 196.0    
June 2022 Forward Contracts | Common Class A                                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                                  
Shares repurchase cash payment $ 200.0                                
Shares repurchase by shares (in shares) | shares 27.0                                
Net investment hedge                                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                                  
Foreign exchange risk exposure, amount | €       € 1,593.9             € 1,611.6            
Foreign currency translation adjustment component of accumulated other comprehensive income (loss)     $ (91.6)             $ 14.6              
Cross-currency swap contracts | Net investment hedge                                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                                  
Notional amount     1,102.5   $ 250.0 SFr 203.6   $ 750.0 SFr 676.9 1,797.6              
Foreign exchange forward contracts                                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                                  
Accumulated cash flow hedges in AOCI/(L), net of tax     (1.1)             2.1              
Cash flow hedge to be reclassified from AOCI/(L) during next 12 months     (1.1)                            
Foreign exchange forward contracts | Net investment hedge                                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                                  
Notional amount     17.3             22.3              
Foreign currency translation adjustment component of accumulated other comprehensive income (loss)     $ (113.2)             $ (37.6)              
Interest rate swap contracts | Interest Rate Risk                                  
Derivative Instruments and Hedging Activities Disclosures [Line Items]                                  
Notional amount                           $ 200.0      
Cash receipt from interest rate swap contracts   $ 2.1