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Stock-Based Compensation (Changes in Stock Appreciation Rights) (Details) - Stock Appreciation Rights (SARs) [Member] $ / shares in Units, $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ | $ 5.4
Shares |
Outstanding awards as of beginning of period (in shares) | shares | 292,500
Granted (in shares) | shares | 47,200
Exercised (in shares) | shares | (123,300)
Outstanding awards as of end of period (in shares) | shares | 203,700
Exercisable at end of period (in shares) | shares | 153,100
Weighted-Average Exercise Price per Share |
Outstanding awards as of beginning of period (in usd per share) | $ / shares | $ 266.57
Granted (in usd per share) | $ / shares | 418.69
Exercised (in usd per share) | $ / shares | 255.73
Outstanding as of end of period (in shares) | $ / shares | 306.61
Exercisable at end of period, Weighted-Average Exercise Price per Share (in usd per share) | $ / shares | $ 287.75
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period | shares | (12,700)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value | $ / shares | $ 295.44

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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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