Stock Award Plans, Employee Plan Stock Option Activity (Details) - Employee Stock Award Plan [Member]	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Employee Stock Option [Member]
Stock Award Plan Information [Abstract]
Term of grant	7 years
Vesting period	3 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at Period Start (in shares)	396,165
Exercised (in shares)	(117,896)
Expired (in shares)	(23,024)
Outstanding at Period End (in shares)	255,245
Weighted Average Exercise Price [Abstract]
Outstanding at Period Start (in dollars per share) | $ / shares	$ 70.06
Exercised (in dollars per share) | $ / shares	60.84
Expired (in dollars per share) | $ / shares	73.66
Outstanding at Period End (in dollars per share) | $ / shares	$ 74
Stock Appreciation Rights (SARs)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at Period End (in shares)	0
Restricted Stock Units (RSUs) [Member]
Stock Award Plan Information [Abstract]
Vesting period	5 years