Stock-Based Compensation (Changes in Stock Appreciation Rights) (Details) - Stock Appreciation Rights (SARs) [Member] $ / shares in Units, $ in Millions	12 Months Ended
	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