Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income	$ 2,076	$ 1,788	$ 5,770	$ 5,290
Weighted-average number of shares outstanding:
Basic (in shares)	593.7	592.4	593.4	595.8
Diluted (in shares)	594.5	593.2	594.0	596.7
Earnings per share - basic (in dollars per share)	$ 3.50	$ 3.02	$ 9.72	$ 8.88
Earnings per share - diluted (in dollars per share)	$ 3.49	$ 3.01	$ 9.71	$ 8.87
Stock options excluded as their inclusion would be anti-dilutive (in shares)	0.0	1.0	0.9	0.9
Stock options
Weighted-average number of shares outstanding:
Dilutive effect of awards (in shares)	0.4	0.2	0.2	0.3
Retention awards
Weighted-average number of shares outstanding:
Dilutive effect of awards (in shares)	0.4	0.6	0.4	0.6

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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