Shareholders' Equity (Schedule Of Share-Based Incentive Plan Grant Activity) (Details) - Options and SAR's $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares
Shares
Shares Outstanding, Beginning Balance (in shares) | shares	811,906
Shares, Granted (in shares) | shares	135,634
Shares, Exercised (in shares) | shares	(108,609)
Shares, Forfeited (in shares) | shares	(27,797)
Shares, Expired (in shares) | shares	(2,994)
Shares Outstanding, Ending Balance (in shares) | shares	808,140
Shares, Exercisable, Ending Balance (in shares) | shares	475,123
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price. Beginning Balance (in dollars per share) | $ / shares	$ 81.50
Weighted Average Exercise Price, Granted (in dollars per share) | $ / shares	150.23
Weighted Average Exercise Price, Exercised (in dollars per share) | $ / shares	64.98
Weighted Average Exercise Price, Forfeited (in dollars per share) | $ / shares	149.24
Weighted Average Exercise Price, Expired (in dollars per share) | $ / shares	76.86
Weighted Average Exercise Price, Ending Balance (in dollars per share) | $ / shares	92.94
Weighted Average Exercise Price, Exercisable, End of Period (in dollars per share) | $ / shares	$ 74.93
Outstanding Weighted Average Remaining Contractual Terms (years)	6 years 3 months 18 days
Exercisable Weighted Average Remaining Contractual Term (years)	5 years 1 month 6 days
Outstanding Aggregate Intrinsic Value | $	$ 27.1
Exercisable Aggregate Intrinsic Value | $	$ 22.0