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Stock-based Compensation (PSU Assumptions and Fair Value) (Details) - Share Units Plan [Member] - Equity Settled Awards [Member] - $ / shares
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
PSU-ROIC [Member]      
Assumptions      
Stock price (in dollars per share) $ 157.91 $ 153.81 $ 133.36
Expected stock price volatility 26.00% 25.00% 24.00%
Expected term (years) 3 years 3 years 3 years
Risk-free interest rate 3.38% 1.58% 0.19%
Dividend rate (in dollars per share) $ 3.16 $ 2.93 $ 2.46
Weighted-average grant date fair value (in dollars per share) 89.37 81.03 64.50
PSU-TSR [Member]      
Assumptions      
Weighted-average grant date fair value (in dollars per share) $ 174.04 $ 180.18 $ 148.02