Per Share Data (Basic and Diluted EPS Calculation Continuing Operations) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Net income from continuing operations	$ 305	$ 260	$ 1,202	$ 1,072
Less: Net income attributable to non-controlling interests	7	6	27	24
Net income attributable to the Company	$ 298	$ 254	$ 1,175	$ 1,048
Basic weighted average common shares outstanding (in shares)	544	549	547	549
Dilutive effect of potentially issuable common shares (in shares)	7	9	7	9
Diluted weighted average common shares outstanding (in shares)	551	558	554	558
Average stock price used to calculate common stock equivalents (in dollars per share)	$ 52.15	$ 42.08	$ 49.89	$ 39.15
Stock options outstanding (in shares)	19.3	24.9	19.3	24.9