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Share-Based Compensation (Summary Of Performance Share Units Grant-Date Fair Values And Their Related Assumptions) (Details)	6 Months Ended
	Jun. 30, 2023 $ / shares
Performance Share Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant-date fair value	$ 51.38
Risk-free interest rate	4.15%
Volatility factor	61.43%
Contractual term (years)	2 years 10 months 20 days
Including Performance Factor Shares Granted [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant-date fair value	$ 81.7

X

- 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

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Rate of weighted-average expected volatility for award under share-based payment arrangement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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