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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Net income before non-controlling interests	$ 320	$ 306	$ 1,667	$ 1,377
Less: Net income attributable to non-controlling interests	4	3	25	26
Net income attributable to the Company	$ 316	$ 303	$ 1,642	$ 1,351
Basic weighted average common shares outstanding (in shares)	507	506	506	506
Dilutive effect of potentially issuable common shares (in shares)	5	5	5	5
Diluted weighted average common shares outstanding (in shares)	512	511	511	511
Average stock price used to calculate common stock equivalents (in dollars per share)	$ 114.64	$ 99.97	$ 107.64	$ 94.75