Per Share Data (Basic and Diluted EPS Calculation Continuing Operations) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net income before non-controlling interests	$ 542	$ 320	$ 2,367	$ 1,667
Less: Net income attributable to non-controlling interests	5	4	27	25
Net income attributable to the Company	$ 537	$ 316	$ 2,340	$ 1,642
Basic weighted average common shares outstanding (in shares)	506	507	508	506
Dilutive effect of potentially issuable common shares (in shares)	7	5	5	5
Diluted weighted average common shares outstanding (in shares)	513	512	513	511
Average stock price used to calculate common stock equivalents (in dollars per share)	$ 151.22	$ 114.64	$ 133.41	$ 107.64