Stock-Based Compensation (Changes in Stock Appreciation Rights) (Details) - Stock Appreciation Rights (SARs) [Member] $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2025 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 | $	$ 5.7
Shares
Outstanding awards as of beginning of period (in shares) | shares	203,700
Granted (in shares) | shares	37,300
Exercised (in shares) | shares	(37,300)
Outstanding awards as of end of period (in shares) | shares	189,600
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	$ 306.61
Granted (in usd per share) | $ / shares	576.28
Exercised (in usd per share) | $ / shares	281.41
Outstanding as of end of period (in shares) | $ / shares	356.37
Exercisable at end of period, Weighted-Average Exercise Price per Share (in usd per share) | $ / shares	$ 317.79
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period | shares	(14,100)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value | $ / shares	$ 417.89