v3.26.1
Stock-Based Compensation Plans - Schedule of Plans' Restricted and Performance Share Award Activity (Details) - $ / shares
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Restricted Shares    
Common Shares    
Outstanding, beginning of the period (in shares) 888,398 880,866
Granted (in shares) 260,905 254,059
Vested and issued (in shares) (278,212) (201,993)
Forfeited or canceled (in shares) (19,173) (17,703)
Outstanding, end of the period (in shares) 851,918 915,229
Vested, but deferred (in shares) 102,959 101,426
Weighted Average Grant-Date Fair Value    
Outstanding, beginning of period (usd per share) $ 101.63 $ 90.95
Granted (usd per share) 153.28 133.14
Vested and issued (usd per share) 93.19 94.27
Forfeited or canceled (usd per share) 124.90 106.93
Outstanding, end of period (usd per share) 119.86 101.62
Vested, but deferred (usd per share) $ 56.28 $ 55.02
Performance-based Stock    
Common Shares    
Outstanding, beginning of the period (in shares) 377,757 454,017
Granted (in shares) 86,224 87,844
Added by performance factor at vesting (in shares) 9,242 75,461
Vested and issued (in shares) (196,899) (230,957)
Forfeited or canceled (in shares) (836) (7,376)
Outstanding, end of the period (in shares) 275,488 378,989
Vested, but deferred (in shares) 0 13,231
Weighted Average Grant-Date Fair Value    
Outstanding, beginning of period (usd per share) $ 102.38 $ 93.57
Granted (usd per share) 148.35 134.58
Added by performance factor at vesting (usd per share) 0 0
Vested and issued (usd per share) 90.33 95.26
Forfeited or canceled (usd per share) 114.09 104.88
Outstanding, end of period (usd per share) 125.97 102.41
Vested, but deferred (usd per share) $ 0 $ 40.53