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	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest [Abstract]
Net income available to common shareholders	$ 608	$ 532	$ 1,677	$ 1,573
Average common shares outstanding - basic (in shares)	666,426,892	680,895,306	669,405,202	684,462,327
Effect of dilutive stock-based awards (in shares)	5,000,000	5,000,000	5,000,000	5,000,000
Average common shares outstanding - diluted (in shares)	670,877,546	686,108,625	673,631,736	689,263,426
Earnings per share - basic (in dollars per share)	$ 0.91	$ 0.78	$ 2.51	$ 2.30
Earnings per share - diluted (in dollars per share)	$ 0.91	$ 0.78	$ 2.49	$ 2.28
Anti-dilutive stock-based awards excluded from diluted shares (in shares)	0	1,000,000	2,000,000	2,000,000