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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, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Earnings Per Share [Abstract] |  |  |  |
Net income before non-controlling interests | $ 397 | $ 384 | $ 1,482 | $ 1,354
Less: Net income attributable to non-controlling interests | 4 | 5 | 19 | 22
Net income attributable to the Company | $ 393 | $ 379 | $ 1,463 | $ 1,332
Basic weighted average common shares outstanding (in shares) | 512.0 | 518.0 | 514.0 | 520.0
Dilutive effect of potentially issuable common shares (in shares) | 7.0 | 5.0 | 6.0 | 5.0
Diluted weighted average common shares outstanding (in shares) | 519.0 | 523.0 | 520.0 | 525.0
Average stock price used to calculate common stock equivalents (in dollars per share) | $ 79.35 | $ 66.98 | $ 75.36 | $ 62.33
Stock options outstanding (in shares) | 11.3 | 13.6 | 11.3 | 13.6

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- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.13) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4613673-111683 + Details
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