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Equity (Summary of Stock Option Exercise Activity) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Share-based Payment Arrangement, Additional Disclosure [Abstract] |  |  |
Total intrinsic value of stock options exercised | $ 40 | $ 60 | $ 29
Cash received from exercise of stock options | 48 | 119 | 89
Income tax benefit realized from stock options exercised | $ 8 | $ 13 | $ 6

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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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