v3.26.1
Financial Instruments and Risk Management (Effect Of Derivative Instruments on the Condensed Consolidated Statements of Operations Derivatives in Cash Flow Hedging Relationships) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax $ 33.0 $ (300.5) $ 72.7 $ (450.8)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax (5.2) 0.6 (8.5) 9.3
Pre-tax net losses on cash flow hedges to be reclassified from AOCE into earnings in next twelve months     (7.0)  
Not Designated as Hedging Instruments        
Derivative Instruments, Gain (Loss) [Line Items]        
Net unrecognized gain (loss) on derivatives in cash flow hedging relationships (0.2) (121.9) 31.3 (228.4)
Foreign currency forward contracts | Income Statement Location [Axis]: us-gaap:OtherNonoperatingIncomeExpense | Not Designated as Hedging Instruments        
Derivative Instruments, Gain (Loss) [Line Items]        
Net unrecognized gain (loss) on derivatives in cash flow hedging relationships (0.2) (125.3) 29.3 (235.2)
Cash Flow Hedging | Foreign currency forward contracts | Income Statement Location [Axis]: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax        
Derivative Instruments, Gain (Loss) [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax 0.1 (21.6) 1.7 (34.8)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax (5.4) 0.7 (8.7) 10.6
Cash Flow Hedging | Interest rate swaps | Income Statement Location [Axis]: us-gaap:InterestExpense        
Derivative Instruments, Gain (Loss) [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax (0.8) (1.0) (1.7) (1.9)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax (0.9) (1.2) (2.1) (2.4)
Net Investment Hedging | Foreign currency forward contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax (2.9) (4.6) (6.3) (4.6)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax 1.1 1.1 2.3 1.1
Net Investment Hedging | Foreign currency forward contracts | Not Designated as Hedging Instruments        
Derivative Instruments, Gain (Loss) [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax 36.6 (233.0) 69.3 (349.4)
Net Investment Hedging | Interest rate swaps | Income Statement Location [Axis]: us-gaap:InterestExpense        
Derivative Instruments, Gain (Loss) [Line Items]        
Net unrecognized gain (loss) on derivatives in cash flow hedging relationships 0.0 3.4 2.0 6.8
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax $ 0.0 $ (40.3) $ 9.7 $ (60.1)