Per Share Data (Basic and Diluted EPS Calculation Continuing Operations) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income before non-controlling interests	$ 998	$ 767
Less: Net income attributable to non-controlling interests	15	13
Net income attributable to the Company	$ 983	$ 754
Basic weighted average common shares outstanding (in shares)	509	505
Dilutive effect of potentially issuable common shares (in shares)	5	5
Diluted weighted average common shares outstanding (in shares)	514	510
Average stock price used to calculate common stock equivalents (in dollars per share)	$ 114.96	$ 107.10