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Equity Incentive Program (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Stock-based compensation expense [Abstract]    
Pre-tax stock-based compensation expense $ 12,282 $ 11,113
Tax benefit (1,364) (1,115)
Total stock-based compensation expense, net of tax $ 10,918 $ 9,998
Stock Appreciation Rights (SARs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Equity awards issued during period (in shares) 358,322 327,940
Risk-free interest rate 3.91% 1.86%
Dividend yield 1.32% 1.25%
Expected life (years) 5 years 4 months 24 days 5 years 4 months 24 days
Volatility 30.65% 29.46%
Grant price (in dollars per share) $ 153.25 $ 160.21
Fair value at date of grant (in dollars per share) $ 47.27 $ 42.07
Performance Shares    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Equity awards issued during period (in shares) 43,656 40,087
Risk-free interest rate 4.28% 1.68%
Dividend yield 1.32% 1.25%
Expected life (years) 2 years 10 months 24 days 2 years 10 months 24 days
Volatility 27.30% 31.10%
Grant price (in dollars per share) $ 153.25 $ 160.21
Fair value at date of grant (in dollars per share) $ 249.48 $ 196.40
Award vesting period 3 years  
Restricted Stock Units (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Equity awards issued during period (in shares) 78,029 71,961
Fair value at date of grant (in dollars per share) $ 153.25 $ 160.21