Stock-Based Compensation Plans - Schedule of Plans' Restricted and Performance Share Award Activity (Details) - $ / shares	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Restricted Shares
Common Shares
Outstanding, beginning of the period (in shares)	880,866	746,123
Granted (in shares)	245,654	305,807
Vested and issued (in shares)	(192,866)	(219,622)
Expired, canceled or forfeited (in shares)	(7,587)	(3,154)
Outstanding, end of the period (in shares)	926,067	829,154
Vested, but deferred (in shares)	101,000	99,382
Weighted Average Grant-Date Fair Value
Outstanding, beginning of period (usd per share)	$ 90.95	$ 79.60
Granted (usd per share)	133.61	98.92
Vested and issued (usd per share)	94.94	69.25
Canceled or forfeited (usd per share)	103.76	87.01
Outstanding, end of period (usd per share)	101.33	89.44
Vested, but deferred (usd per share)	$ 54.75	$ 53.78
Performance-based Stock
Common Shares
Outstanding, beginning of the period (in shares)	454,017	553,026
Granted (in shares)	86,524	96,210
Added by performance factor at vesting (in shares)	75,461	111,204
Vested and issued (in shares)	(230,957)	(294,902)
Expired, canceled or forfeited (in shares)	(2,902)	(864)
Outstanding, end of the period (in shares)	382,143	464,674
Vested, but deferred (in shares)	13,176	21,493
Weighted Average Grant-Date Fair Value
Outstanding, beginning of period (usd per share)	$ 93.57	$ 79.69
Granted (usd per share)	134.69	58.78
Added by performance factor at vesting (usd per share)	96.51	100.44
Vested and issued (usd per share)	95.26	58.69
Canceled or forfeited (usd per share)	97.28	95.40
Outstanding, end of period (usd per share)	102.41	93.62
Vested, but deferred (usd per share)	$ 40.20	$ 43.71