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Share-Based Compensation (Summary of Unrecognized Compensation Cost And Weighted Average Period For Recognition) (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2023 USD ($)
Restricted Stock Awards [Member] |
Unrecognized Compensation And Weighted Average Recognition [Line Items] |
Unrecognized compensation cost | $ 118
Weighted average period for recognition (years) | 2 years 9 months 18 days
Performance Share Units [Member] |
Unrecognized Compensation And Weighted Average Recognition [Line Items] |
Unrecognized compensation cost | $ 30
Weighted average period for recognition (years) | 1 year 10 months 24 days

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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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