Equity Transactions (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended
	Aug. 16, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Equity [Abstract]
Cash dividends declared per common share (in dollars per share)	$ 1.90	$ 1.90	$ 1.65	$ 5.20	$ 4.65
Stock repurchased during period, shares		74,015		125,855
Weighted average price (in dollars per share)		$ 202.63		$ 198.61
Stock repurchased during period, value		$ 15.0		$ 25.0
Shares available for repurchase (in shares)		702,497		702,497