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Stock-based Compensation Plans (Summary of Stock Option Activity) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Shares
Outstanding, beginning of period, Shares	1,111,871	1,137,042	1,080,852
Granted, Shares	140,393	150,731	135,019
Exercised, Shares	(155,280)	(173,260)	(56,645)
Forfeited or cancelled, Shares	(2,522)	(2,642)	(22,184)
Outstanding, end of period, Shares	1,094,462	1,111,871	1,137,042
Exercisable, end of period, Shares	812,847	830,549	864,186
Weighted Average Exercise Price
Outstanding, beginning of period, Weighted Average Exercise Price	$ 117.43	$ 111.57	$ 107.07
Granted, Weighted Average Exercise Price	161.82	134.26	140.01
Exercised, Weighted Average Exercise Price	96.49	93.37	88.1
Forfeited or cancelled, Weighted Average Exercise Price	149.73	134.99	125.15
Outstanding, end of period, Weighted Average Exercise Price	126.02	117.43	111.57
Exercisable, end of period, Weighted Average Exercise Price	$ 118.14	$ 110.85	$ 104.16

X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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