v3.26.1
Financial Instruments and Fair Value Measurement - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2026
Dec. 31, 2027
Dec. 31, 2025
Fair Value Disclosures [Abstract]          
Fair value of long-term debt $ 5,530,000,000       $ 5,381,000,000
Carrying value of long-term debt 5,621,000,000       $ 5,434,000,000
Expected reclassification of pre-tax gain in the next twelve months from ACOL to earnings $ 4,000,000        
Not Designated as Hedging Instrument | Maximum          
Derivatives not Designated as Hedges          
Foreign currency forward exchange contract term (in months) 5 months       5 months
Interest Rate Swap Agreements          
Foreign Currency Risk          
Notional amount $ 500,000,000        
Derivatives not Designated as Hedges          
Notional amount 500,000,000        
Interest Rate Swap Agreements | Cash Flow Hedging | Designated as Hedging Instrument          
Interest Rate Risk          
Amounts excluded from effectiveness 0 $ 0      
Amounts excluded from the measure of effectiveness 0 0      
Commodity Risk          
Amounts excluded from effectiveness 0 0      
Amounts excluded from the measure of effectiveness 0 0      
Foreign Currency Risk          
Amounts excluded from effectiveness 0 0      
Amounts excluded from the measure of effectiveness 0 0      
Commodity Contracts | Cash Flow Hedging | Forecast          
Commodity Risk          
Percentage of expected natural gas usage hedged     60.00% 10.00%  
Commodity Contracts | Cash Flow Hedging | Designated as Hedging Instrument          
Interest Rate Risk          
Amounts excluded from effectiveness 0 0      
Amounts excluded from the measure of effectiveness 0 0      
Commodity Risk          
Amounts excluded from effectiveness 0 0      
Amounts excluded from the measure of effectiveness 0 0      
Foreign Currency Risk          
Amounts excluded from effectiveness 0 0      
Amounts excluded from the measure of effectiveness 0 $ 0      
Foreign Exchange Forward          
Foreign Currency Risk          
Notional amount 82,000,000       $ 118,000,000
Derivatives not Designated as Hedges          
Notional amount 82,000,000       118,000,000
Foreign Exchange Forward | Not Designated as Hedging Instrument          
Foreign Currency Risk          
Notional amount 158,000,000       155,000,000
Derivatives not Designated as Hedges          
Notional amount 158,000,000       $ 155,000,000
Foreign Exchange Forward | Cash Flow Hedging | Designated as Hedging Instrument          
Interest Rate Risk          
Amounts excluded from effectiveness 0        
Amounts excluded from the measure of effectiveness 0        
Commodity Risk          
Amounts excluded from effectiveness 0        
Amounts excluded from the measure of effectiveness 0        
Foreign Currency Risk          
Amounts reclassified into earnings connected to forecasted transactions no longer considered probable 0        
Amounts excluded from effectiveness 0        
Amounts excluded from the measure of effectiveness $ 0