v3.26.1
Debt (Details)
$ / shares in Units, € in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
Jun. 30, 2026
USD ($)
agreement
$ / shares
Jun. 30, 2026
EUR (€)
May 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2025
EUR (€)
Jun. 30, 2025
USD ($)
Jun. 30, 2025
EUR (€)
Mar. 25, 2022
USD ($)
Debt Instrument                  
Total long-term debt $ 4,856 $ 4,856     $ 4,903   $ 5,003    
Less amounts due within one year 63 63     66   105    
Long-term debt 4,793 4,793     4,837   4,898    
Maximum Borrowing Capacity                 $ 2,700
Secured Credit Agreement                  
Debt Instrument                  
Unused Credit $ 1,110 $ 1,110              
Number of financial maintenance covenants | agreement   1              
Additional default interest rate per annum applied to all obligations owed under the Agreement   2.00%              
Leverage Ratio   2.5              
Secured Credit Agreement | Minimum                  
Debt Instrument                  
Interest rate margin, Term SOFR and Euro currency rate loans 1.00% 1.00% 1.00%            
Interest rate margin, Base Rate loans (as a percent)   0.00%              
Facility fee payable (as a percent)   0.20%              
Secured Credit Agreement | Maximum                  
Debt Instrument                  
Interest rate margin, Term SOFR and Euro currency rate loans 1.75% 1.75% 1.75%            
Interest rate margin, Base Rate loans (as a percent)   0.75%              
Facility fee payable (as a percent)   0.35%              
Revolving Loans                  
Debt Instrument                  
Total long-term debt $ 130 $ 130         205    
Term Loans A                  
Debt Instrument                  
Total long-term debt 790 790     799        
Maximum Borrowing Capacity 800 800              
Term Loans B                  
Debt Instrument                  
Total long-term debt $ 640 $ 640     643        
Interest rate margin, Term SOFR rate loans 3.00% 3.00% 3.00%            
Maximum Borrowing Capacity $ 650 $ 650              
Term Loans A                  
Debt Instrument                  
Total long-term debt             1,339    
Senior Notes 6.625%, due 2027                  
Debt Instrument                  
Total long-term debt         610   610    
Interest rate, stated percentage 6.625% 6.625% 6.625% 6.625%          
Face value       $ 612          
Additional interest charges for note repurchase premiums and write-off of unamortized finance fees $ 1                
Senior Notes 6.250%, due 2028 (€600 million)                  
Debt Instrument                  
Total long-term debt $ 680 $ 680 € 600   700 € 600 699 € 600  
Interest rate, stated percentage 6.25% 6.25% 6.25%            
Fair values of fixed rate debt obligations                  
Principal Amount $ 683 $ 683              
Indicated Market Price (in dollars per share) | $ / shares $ 101.61 $ 101.61              
Fair Value $ 694 $ 694              
Senior Notes 5.250%, due 2029 (€500 million)                  
Debt Instrument                  
Total long-term debt $ 565 $ 565 € 500   581 € 500 580 € 500  
Interest rate, stated percentage 5.25% 5.25% 5.25%            
Fair values of fixed rate debt obligations                  
Principal Amount $ 569 $ 569              
Indicated Market Price (in dollars per share) | $ / shares $ 101.76 $ 101.76              
Fair Value $ 579 $ 579              
Senior Notes 4.750%, due 2030                  
Debt Instrument                  
Total long-term debt $ 398 $ 398     397   397    
Interest rate, stated percentage 4.75% 4.75% 4.75%            
Fair values of fixed rate debt obligations                  
Principal Amount $ 400 $ 400              
Indicated Market Price (in dollars per share) | $ / shares $ 94.99 $ 94.99              
Fair Value $ 380 $ 380              
Senior Notes 7.250% due 2031                  
Debt Instrument                  
Total long-term debt $ 684 $ 684     684   683    
Interest rate, stated percentage 7.25% 7.25% 7.25%            
Fair values of fixed rate debt obligations                  
Principal Amount $ 690 $ 690              
Indicated Market Price (in dollars per share) | $ / shares $ 98.82 $ 98.82              
Fair Value $ 682 $ 682              
Senior Notes 7.375% due 2032                  
Debt Instrument                  
Total long-term debt $ 297 $ 297     297   296    
Interest rate, stated percentage 7.375% 7.375% 7.375%            
Fair values of fixed rate debt obligations                  
Principal Amount $ 300 $ 300              
Indicated Market Price (in dollars per share) | $ / shares $ 96.05 $ 96.05              
Fair Value $ 288 $ 288              
Senior Notes 9.500% due 2033                  
Debt Instrument                  
Total long-term debt $ 493 $ 493              
Interest rate, stated percentage 9.50% 9.50% 9.50% 9.50%          
Face value       $ 500          
Fair values of fixed rate debt obligations                  
Principal Amount $ 500 $ 500              
Indicated Market Price (in dollars per share) | $ / shares $ 102.5 $ 102.5              
Fair Value $ 513 $ 513              
Finance leases                  
Debt Instrument                  
Total long-term debt 152 152     174   186    
Other debt                  
Debt Instrument                  
Total long-term debt 27 27     $ 18   $ 8    
Multicurrency Revolving Credit Facility                  
Debt Instrument                  
Maximum Borrowing Capacity $ 1,250 $ 1,250              
Weighted average interest rate (as a percent) 5.50% 5.50% 5.50%