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Stock-Based Compensation (Stock Appreciation Rights Outstanding and Exercisable) (Details) - Stock Appreciation Rights (SARs) [Member] - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition | 2 years 9 months 18 days |
Stock Appreciation Rights Outstanding, Shares | 487,900 | 478,300
Stock Appreciation Rights Exercisable, Shares | 324,600 |
$34.06 to $46.78 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices per Share, upper range limit | $ 214.63 |
Stock Appreciation Rights Outstanding, Shares | 175,700 |
Stock Appreciation Rights Outstanding, Weighted-Average Remaining Contractual Term (in years) | 2 years 1 month 13 days |
Stock Appreciation Rights Outstanding, Aggregate Intrinsic Value | $ 7.7 |
Stock Appreciation Rights Exercisable, Shares | 175,700 |
Stock Appreciation Rights Exercisable, Weighted-Average Remaining Contractual Life (in years) | 2 years 1 month 13 days |
Stock Appreciation Rights Exercisable, Aggregate Intrinsic Value | $ 7.7 |
Range of Exercise Prices per Share, lower range limit | $ 124.97 |
$51.11 to $81.14 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices per Share, upper range limit | $ 278.00 |
Stock Appreciation Rights Outstanding, Shares | 147,900 |
Stock Appreciation Rights Outstanding, Weighted-Average Remaining Contractual Term (in years) | 4 years 5 months 1 day |
Stock Appreciation Rights Outstanding, Aggregate Intrinsic Value | $ 0.0 |
Stock Appreciation Rights Exercisable, Shares | 126,900 |
Stock Appreciation Rights Exercisable, Weighted-Average Remaining Contractual Life (in years) | 4 years 3 months 29 days |
Stock Appreciation Rights Exercisable, Aggregate Intrinsic Value | $ 0.0 |
Range of Exercise Prices per Share, lower range limit | $ 257.08 |
$92.64 to $126.31 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices per Share, upper range limit | $ 328.65 |
Stock Appreciation Rights Outstanding, Shares | 164,300 |
Stock Appreciation Rights Outstanding, Weighted-Average Remaining Contractual Term (in years) | 6 years 7 months 2 days |
Stock Appreciation Rights Outstanding, Aggregate Intrinsic Value | $ 0.0 |
Stock Appreciation Rights Exercisable, Shares | 22,100 |
Stock Appreciation Rights Exercisable, Weighted-Average Remaining Contractual Life (in years) | 6 years |
Stock Appreciation Rights Exercisable, Aggregate Intrinsic Value | $ 0.0 |
Range of Exercise Prices per Share, lower range limit | $ 259.56 |

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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