v3.26.3
Debt (Exchanges) (Details)
shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2025
USD ($)
shares
Debt    
Loss on convertible debt   $ 99
4.00% Senior Guaranteed Exchangeable Bonds due December 2025    
Debt    
Debt instrument interest rate stated percentage 4.00% 4.00%
Aggregate principal amount of debt issued in exchanges $ 147 $ 196
Loss on convertible debt $ 75 $ 99
Shares issued upon conversion (in shares) | shares 54.7 73.3
4.00% Senior Guaranteed Exchangeable Bonds due December 2025 | Incremental portion pursuant to governing indenture    
Debt    
Shares issued upon conversion (in shares) | shares   35.9