Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Gains (Losses) on Financial Instruments (Details)

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Fair Value Measurements - Gains (Losses) on Financial Instruments (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Mar. 31, 2023
Nov. 26, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Total $ 115 $ (126) $ 83    
Gain on extinguishment of debt 12 0 0    
Cash Convertible Senior Notes due 2023 | Senior Notes          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Gain on extinguishment of debt $ 12 $ 46 7    
Stated interest rate (as a percent)   1.375%   1.375%  
2.125%% Exchangeable Senior Debentures due 2048 | Senior Notes          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Stated interest rate (as a percent)   2.125%      
2.75% Exchangeable Senior Debentures | Senior Notes          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Stated interest rate (as a percent) 2.75%       2.75%
Equity securities          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Total $ 0 $ (15) 0    
Debt measured at fair value          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Total 115 (5) 329    
Gain (loss) on specific credit risk (27) (6) 36    
Cumulative loss on credit risk 10        
Change in fair value of bond hedges          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Total 0 (114) (236)    
Other          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Total $ 0 $ 8 $ (10)