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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, 2024 | Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition | 1 year 10 months 24 days |
Stock Appreciation Rights Outstanding, Shares | 203,700 | 292,500
Stock Appreciation Rights Exercisable, Shares | 153,100 |
$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 | $ 257.08 |
Stock Appreciation Rights Outstanding, Shares | 33,400 |
Stock Appreciation Rights Outstanding, Weighted-Average Remaining Contractual Term (in years) | 1 year 8 months 23 days |
Stock Appreciation Rights Outstanding, Aggregate Intrinsic Value | $ 12.1 |
Stock Appreciation Rights Exercisable, Shares | 33,400 |
Stock Appreciation Rights Exercisable, Weighted-Average Remaining Contractual Life (in years) | 1 year 8 months 12 days |
Stock Appreciation Rights Exercisable, Aggregate Intrinsic Value | $ 12.1 |
Range of Exercise Prices per Share, lower range limit | $ 214.63 |
$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 | $ 328.65 |
Stock Appreciation Rights Outstanding, Shares | 57,800 |
Stock Appreciation Rights Outstanding, Weighted-Average Remaining Contractual Term (in years) | 3 years 6 months 29 days |
Stock Appreciation Rights Outstanding, Aggregate Intrinsic Value | $ 17.4 |
Stock Appreciation Rights Exercisable, Shares | 57,800 |
Stock Appreciation Rights Exercisable, Weighted-Average Remaining Contractual Life (in years) | 3 years 6 months 29 days |
Stock Appreciation Rights Exercisable, Aggregate Intrinsic Value | $ 17.4 |
Range of Exercise Prices per Share, lower range limit | $ 278.00 |
$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 | $ 418.69 |
Stock Appreciation Rights Outstanding, Shares | 112,500 |
Stock Appreciation Rights Outstanding, Weighted-Average Remaining Contractual Term (in years) | 5 years 9 months 21 days |
Stock Appreciation Rights Outstanding, Aggregate Intrinsic Value | $ 32.1 |
Stock Appreciation Rights Exercisable, Shares | 61,900 |
Stock Appreciation Rights Exercisable, Weighted-Average Remaining Contractual Life (in years) | 5 years 4 months 28 days |
Stock Appreciation Rights Exercisable, Aggregate Intrinsic Value | $ 19.6 |
Range of Exercise Prices per Share, lower range limit | $ 259.56 |

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