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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, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Earnings Per Share [Abstract] |  |  |  |
Net income before non-controlling interests | $ 542 | $ 320 | $ 2,367 | $ 1,667
Less: Net income attributable to non-controlling interests | 5 | 4 | 27 | 25
Net income attributable to the Company | $ 537 | $ 316 | $ 2,340 | $ 1,642
Basic weighted average common shares outstanding (in shares) | 506 | 507 | 508 | 506
Dilutive effect of potentially issuable common shares (in shares) | 7 | 5 | 5 | 5
Diluted weighted average common shares outstanding (in shares) | 513 | 512 | 513 | 511
Average stock price used to calculate common stock equivalents (in dollars per share) | $ 151.22 | $ 114.64 | $ 133.41 | $ 107.64

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