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Stock-Based Compensation Plans (Schedule Of Comparative Data For Stocks Option, Stock Awards And PSUs) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock-Based Compensation Plans [Abstract]
Total compensation expense of stock-based compensation plans charged against income	$ 33,613	$ 31,420	$ 26,802
Total income tax benefit recognized in income for stock based compensation expense charged against income	8,487	7,918	6,904
Total intrinsic value of stock options exercised	53,339	62,038	125,448
Total intrinsic value of stock awards vested during the period	$ 1,170	$ 1,173	$ 1,171
Per-share weighted average grant-date fair value of stock awards granted	$ 496.25	$ 482.66	$ 466.43

X

- Definition

Share based compensation arrangement by share based payment award equity instruments other than options vested in period total intrinsic value.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award income tax benefit recognized in income.

+ References

No definition available.

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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

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- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

+ 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 (d)(2)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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