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Shareholders' Equity Dividends (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  |  | 12 Months Ended
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Dec. 14, 2021 | Sep. 21, 2021 | Jun. 29, 2021 | Mar. 23, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Equity [Abstract] |  |  |  |  |  |  |
Cash dividends per common share | $ 1.45 | $ 1.45 | $ 1.45 | $ 1.25 | $ 5.60 | $ 4.83 | $ 4.14
Payments of Ordinary Dividends, Common Stock | $ 1,365 | $ 1,367 | $ 1,367 | $ 1,181 | $ 5,280 | $ 4,584 | $ 3,932

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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