Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Basic EPS Calculation
Earnings available to common stockholders - Basic	$ 35,465	$ 15,625	$ (5,543)
Weighted-average number of common shares outstanding (in shares)	1,931	1,916	1,870
Add: Deferred awards held as stock units (in shares)	0	0	0
Total weighted-average number of common shares outstanding (in shares)	1,931	1,916	1,870
Earnings per share of common stock - Basic (in dollars per share)	$ 18.36	$ 8.15	$ (2.96)
Diluted EPS Calculation
Earnings available to common stockholders - Diluted	$ 35,465	$ 15,625	$ (5,543)
Weighted-average number of common shares outstanding (in shares)	1,931	1,916	1,870
Add: Deferred awards held as stock units (in shares)	0	0	0
Add: Dilutive effect of employee stock-based awards (in shares)	9	4	0
Total weighted-average number of common shares outstanding (in shares)	1,940	1,920	1,870
Earnings per share of common stock - Diluted (in dollars per share)	$ 18.28	$ 8.14	$ (2.96)
Antidilutive securities excluded from computation of earnings per share (in shares)			1