Earnings Per Share - Calculation of Earnings Per Share and the Reconciliation of Earnings Per Share to Earnings Per Diluted Share (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share [Abstract]
Net income available to common shareholders	$ 2,155	$ 2,212	$ 2,330
Less: Income allocated to participating securities	0	0	2
Net income allocated to common shareholders	$ 2,155	$ 2,212	$ 2,328
Average common shares outstanding - basic (in shares)	682,160,985	684,172,079	688,633,659
Effect of dilutive stock-based awards (in shares)	5,000,000	4,000,000	6,000,000
Average common shares outstanding - diluted (in shares)	687,300,837	687,678,291	694,952,038
Earnings per share - basic (in dollars per share)	$ 3.16	$ 3.23	$ 3.38
Earnings per share - diluted (in dollars per share)	$ 3.14	$ 3.22	$ 3.35
Anti-dilutive stock-based awards excluded from diluted shares (in shares)	1,000,000	6,000,000	3,000,000