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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
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Earnings Per Share [Abstract] |  |
Net income before non-controlling interests | $ 998 | $ 767
Less: Net income attributable to non-controlling interests | 15 | 13
Net income attributable to the Company | $ 983 | $ 754
Basic weighted average common shares outstanding (in shares) | 509 | 505
Dilutive effect of potentially issuable common shares (in shares) | 5 | 5
Diluted weighted average common shares outstanding (in shares) | 514 | 510
Average stock price used to calculate common stock equivalents (in dollars per share) | $ 114.96 | $ 107.10

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