Per Share Data (Basic and Diluted EPS Calculation Continuing Operations) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Net income before non-controlling interests	$ 827	$ 580	$ 1,825	$ 1,347
Less: Net income attributable to non-controlling interests	7	8	22	21
Net income attributable to the Company	$ 820	$ 572	$ 1,803	$ 1,326
Basic weighted average common shares outstanding (in shares)	508	506	508	505
Dilutive effect of potentially issuable common shares (in shares)	5	5	6	5
Diluted weighted average common shares outstanding (in shares)	513	511	514	510
Average stock price used to calculate common stock equivalents (in dollars per share)	$ 134.04	$ 101.17	$ 124.50	$ 104.14