v3.26.1
Financial Instruments, Risk Management and Fair Value Measurements - Additional Information (Details)
Jun. 30, 2026
USD ($)
MMBTU
Dec. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
Derivative [Line Items]      
Estimated fair value of debt $ 4,032,200,000 $ 3,809,900,000  
Carrying amount of debt 4,280,600,000 $ 4,074,900,000  
Foreign exchange contracts | Not Designated as Hedging Instruments      
Derivative [Line Items]      
Notional amount 3,653,200,000    
Foreign exchange contracts | Cash Flow Hedging | Designated as Hedging Instrument      
Derivative [Line Items]      
Net gains (losses) on cash flow hedges (5,300,000)    
Forward Contracts | Cash Flow Hedging | Designated as Hedging Instrument      
Derivative [Line Items]      
Net gains (losses) on cash flow hedges 491,200,000    
Interest rate contracts | Cash Flow Hedging | Designated as Hedging Instrument      
Derivative [Line Items]      
Net gains (losses) on cash flow hedges $ (24,800,000)    
Energy Contracts | Designated as Hedging Instrument      
Derivative [Line Items]      
Nonmonetary notional amount of price risk cash flow hedge (in mmBTUs) | MMBTU 0    
Foreign Currency and Energy Contracts | Designated as Hedging Instrument      
Derivative [Line Items]      
Loss on derivative contracts $ 5,300,000    
Fixed-To-Fixed Cross-Currency Swaps | Net Investment Hedging | Designated as Hedging Instrument      
Derivative [Line Items]      
Notional amount $ 750,000,000   $ 750,000,000