Stock-Based Compensation Programs - Weighted average assumptions (Details) - Stock option and SSARs	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Weighted average assumptions used in estimation of fair values of options
Expected dividend yield (as a percent)	1.42%	1.41%	0.92%
Expected stock price volatility (as a percent)	31.51%	30.11%	25.56%
Risk-free interest rate (as a percent)	4.07%	3.52%	1.77%
Expected life of options (in years)	5 years 10 months 2 days	5 years 9 months 18 days	6 years 1 month 6 days