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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, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Earnings Per Share [Abstract] |  |  |  |
Net income before non-controlling interests | $ 306 | $ 279 | $ 1,377 | $ 1,511
Less: Net income attributable to non-controlling interests | 3 | 3 | 26 | 14
Net income attributable to the Company | $ 303 | $ 276 | $ 1,351 | $ 1,497
Basic weighted average common shares outstanding (in shares) | 506 | 504 | 506 | 506
Dilutive effect of potentially issuable common shares (in shares) | 5 | 6 | 5 | 6
Diluted weighted average common shares outstanding (in shares) | 511 | 510 | 511 | 512
Average stock price used to calculate common stock equivalents (in dollars per share) | $ 99.97 | $ 84.68 | $ 94.75 | $ 83.05

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