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Share-Based Compensation Plans - RSUs Valuation Assumptions (Details) - $ / shares
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Time-vesting RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares granted 48,872 18,080 33,665
Grant date fair value per share (in dollars per share) $ 268.60 $ 283.86 $ 312.83
Weighted-average assumptions/inputs:      
Expected dividend yield (as a percent) 0.60% 0.50% 0.40%
Range of risk-free interest rates (minimum) (as a percent) 3.60% 1.20% 0.30%
Range of risk-free interest rates (maximum) (as a percent) 4.70% 4.50% 1.00%
Performance and Time-vesting RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares granted 279,083 120,340 94,001
Grant date fair value per share (in dollars per share) $ 313.84 $ 296.28 $ 308.59
Weighted-average assumptions/inputs:      
Expected dividend yield (as a percent) 0.60% 0.50% 0.40%
Range of risk-free interest rates (minimum) (as a percent) 3.60% 0.40% 0.30%
Range of risk-free interest rates (maximum) (as a percent) 4.50% 3.20% 0.70%