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Stock-Based Incentive Compensation Plans (Compensation Expense By Award Type) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Share-based compensation arrangement by share-based payment award [Line Items] |  |  |
Compensation expense | $ 51 | $ 61 | $ 51
Recognized tax benefit | 11 | 13 | 11
Stock Options [Member] |  |  |
Share-based compensation arrangement by share-based payment award [Line Items] |  |  |
Compensation expense | 6 | 8 | 10
Performance Shares [Member] |  |  |
Share-based compensation arrangement by share-based payment award [Line Items] |  |  |
Compensation expense | 10 | 18 | 5
RSUs [Member] |  |  |
Share-based compensation arrangement by share-based payment award [Line Items] |  |  |
Compensation expense | $ 35 | $ 35 | $ 36

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + 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 (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. + 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 (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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