Share-Based Payments (Nonvested restricted stock activity) (Details) - Restricted Stock Units (RSUs)	12 Months Ended
	Dec. 31, 2023 $ / shares shares
RSUs
Nonvested, Beginning Balance (in shares) | shares	620,598
Granted (in shares) | shares	275,664
Vested (in shares) | shares	(201,011)
Reinvested dividend equivalents (in shares) | shares	6,036
Forfeited (in shares) | shares	(45,436)
Nonvested, Ending Balance (in shares) | shares	655,851
Weighted Average Grant Date Fair Value Per Share
Nonvested, Beginning Balance (in dollars per share) | $ / shares	$ 169.24
Granted (in dollars per share) | $ / shares	162.63
Vested (in dollars per share) | $ / shares	145.80
Reinvested dividend equivalents (in dollars per share) | $ / shares	171.21
Forfeited (in dollars per share) | $ / shares	171.72
Nonvested, Ending Balance (in dollars per share) | $ / shares	$ 173.49