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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest [Abstract]
Net income available to common shareholders	$ 532	$ 623	$ 1,573	$ 1,719
Average common shares outstanding - basic (in shares)	680,895,306	684,224,277	684,462,327	684,090,872
Effect of dilutive stock-based awards	5,000,000	3,000,000	5,000,000	4,000,000
Average common shares outstanding - diluted (in shares)	686,108,625	687,059,147	689,263,426	687,661,319
Earnings per share (in dollars per share)	$ 0.78	$ 0.91	$ 2.30	$ 2.51
Earnings per diluted share (in dollars per share)	$ 0.78	$ 0.91	$ 2.28	$ 2.50
Anti-dilutive stock-based awards excluded from diluted shares (in shares)	1,000,000	6,000,000	2,000,000	6,000,000