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Earnings Per Share - Schedule of Reconciliation (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]      
Net income $ 6,747 $ 6,379 $ 6,998
Weighted-average number of shares outstanding:      
Weighted average number of shares - basic (in shares) 607.6 609.2 622.7
Weighted average number of shares - diluted (in shares) 608.6 610.2 624.0
Earnings per share - basic (in dollars per share) $ 11.10 $ 10.47 $ 11.24
Earnings per share - diluted (in dollars per share) $ 11.09 $ 10.45 $ 11.21
Stock options      
Weighted-average number of shares outstanding:      
Weighted-average number of shares outstanding, dilutive effect on shares 0.4 0.4 0.6
Retention awards      
Weighted-average number of shares outstanding:      
Weighted-average number of shares outstanding, dilutive effect on shares 0.6 0.6 0.7