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Net Income (Loss) Per Common Share - Calculations for Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Numerator:    
Net income (loss)—basic and diluted $ (90) $ 755
Denominator:    
Basic weighted-average common shares outstanding (in shares) 156.4 156.8
Diluted weighted-average shares 156.4 157.9
Earnings (loss) per share:    
Basic (in USD per share) $ (0.57) $ 4.82
Diluted (in USD per share) $ (0.57) $ 4.78
Number of anti-dilutive stock-based awards (in shares) 1.7 1.3
Stock Options    
Denominator:    
Effect of stock-based awards (in shares) 0.0 0.7
Nonvested shares    
Denominator:    
Effect of stock-based awards (in shares) 0.0 0.4