Equity Transactions (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended		9 Months Ended
	Aug. 17, 2022	May 31, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Equity [Abstract]
Cash dividends declared per common share (in dollars per share)	$ 1.65		$ 1.65	$ 1.50	$ 4.65	$ 3.14
Repurchases of common shares (in shares)			50,422		397,777
Weighted average price (in dollars per share)			$ 198.29		$ 201.09
Total cost of shares repurchased			$ (10,000)	$ (20,000)	$ (80,000)	$ (32,499)
Addition to the total number of shares authorized to be repurchased (in shares)		750,000
Shares available for repurchase (in shares)			881,672		881,672