Total Equity - Reconciliation of Common Shares Outstanding for Basic and Diluted EPS (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Weighted average common shares outstanding (in shares)	1,785	1,603	1,617
Effect of dilutive Stock options, RSUs and PSUs (in shares)	29	21	23
Weighted average common shares outstanding and common stock equivalents, diluted (in shares)	1,814	1,624	1,640
Weighted average antidilutive RSUs and stock options (excluded from the computation of diluted EPS) (shares)	0	5	2