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Stock-Based Compensation (Activity Relating to Performance Share Awards) (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Compensation Expense Recorded [Line Items] |  |  |
Compensation expense | $ 62 | $ 71 | $ 63
Performance Share Awards |  |  |
Compensation Expense Recorded [Line Items] |  |  |
Weighted grant date fair value of awards granted (in dollars per share) | $ 120.25 | $ 118.43 | $ 129.68
Awards settled in cash | $ 10 | $ 12 | $ 21
Awards settled in stock | 72 | 74 | 53
Compensation expense | $ 47 | $ 58 | $ 50

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- Definition Represents the expense recognized during the period arising from liability and equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References No definition available. + Details
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- Definition Compensation Expense Recorded [Line Items] + References No definition available. + Details
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- Definition Aggregate cash paid by the entity during the period to settle equity and liability instruments granted under equity and liability-based payment arrangements. + References No definition available. + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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 (c)(2)(iii)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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