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Earnings per share (Tables)
3 Months Ended
Mar. 31, 2025
Earnings Per Share [Abstract]  
Schedule of Computation for Basic and Diluted Earnings (Loss) per Share
The computations for basic and diluted earnings (loss) per share were as follows (in millions, except per-share data):
 Three months ended
March 31,
 20252024
Income (Numerator):
Net income (loss) for basic and diluted earnings (loss) per share$1,730 $(113)
Shares (Denominator):
Weighted-average shares for basic earnings (loss) per share538 536 
Effect of dilutive securities— 
Weighted-average shares for diluted earnings (loss) per share541 536 
Basic earnings (loss) per share$3.22 $(0.21)
Diluted earnings (loss) per share$3.20 $(0.21)