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Share Options And Awards (Fair Value Of Market-Based Share Awards Assumptions) (Details) - Restricted Shares [Member]
9 Months Ended
Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected volatility, Minimum 12.60% [1]
Expected volatility, Maximum 18.00% [1]
Expected life (in years) 3 years
Risk-free interest rate, Minimum 0.10%
Risk-free interest rate, Maximum 1.10%
Minimum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Dividend yield 0.00%
Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Dividend yield 3.60%
[1] Includes the volatility of the FTSE NAREIT U.S. Shopping Center index and Weingarten Realty Investors.