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Share-based Payments (Summary of Stock Option Pricing Assumptions) (Details) - PSUs with Market Conditions
9 Months Ended
Sep. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Risk free interest rate 4.40%
Expected lives of the PSUs 3 years
Expected volatility 32.20%
Average expected volatility of comparable companies 48.30%