Share-Based Compensation (Summary of Stock Option Activity) (Details) - $ / shares	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Number of shares
Beginning balance (in shares)	1,262,366	1,328,144	1,683,657
Granted (in shares)	291,005	201,932	345,636
Exercised (in shares)	(95,207)	(256,004)	(686,894)
Expired (in shares)	(27,948)	(8,912)	(7,910)
Forfeited (in shares)	(9,838)	(2,794)	(6,345)
Ending balance (in shares)	1,420,378	1,262,366	1,328,144
Weighted average exercise price
Beginning balance (in dollars per share)	$ 50.75	$ 44.60	$ 38.26
Granted (in dollars per share)	52.90	73.02	48.65
Exercised (in dollars per share)	29.67	36.79	31.08
Expired (in dollars per share)	35.41	37.58	42.16
Forfeited (in dollars per share)	57.07	57.75	48.04
Ending balance (in dollars per share)	$ 52.83	$ 50.75	$ 44.60
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Number of shares, Outstanding stock options exercisable (in shares)	891,884	729,411	693,883
Weighted average exercise price, Outstanding stock options exercisable (in dollars per share)	$ 50.36	$ 46.02	$ 41.54

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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.

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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.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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.

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

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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 price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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