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Stock-Based Compensation Plans Stock-Based Compensation Plans (Summary Of Restricted Stock Units Activity) (Details) - Restricted Stock Units [Member]	9 Months Ended
	Sep. 30, 2025 $ / shares shares
Share -based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding | shares	533,447
Granted | shares	102,035
Restricted stock units converted to common stock, shares | shares	(16,694)
Forfeited | shares	(2,273)
Outstanding | shares	616,515
Weighted Average Grant-Date Fair Value Per Share, Outstanding | $ / shares	$ 407.15
Weighted Average Grant-Date Fair Value Per Share, Non-vested, Granted | $ / shares	471.21
Weighted Average Grant-Date Fair Value Per Share, Non-vested, Converted | $ / shares	521.79
Weighted Average Grant-Date Fair Value Per Share, Non-vested, Forfeited | $ / shares	474.74
Weighted Average Grant-Date Fair Value Per Share, Outstanding | $ / shares	$ 414.39

X

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Converted, Weighted Average Grant Date Fair Value

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The weighted average fair value of awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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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).

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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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Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event.

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