Share Options And Awards (Tables)

12 Months Ended

Dec. 31, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Fair Value And Weighted Average Assumptions Of Share Options

The fair value and weighted average assumptions were as follows:

	Year Ended December 31,
	2011			2010
Fair value per share option	$	5.68		$	5.42
Dividend yield	5.3		%	5.3		%
Expected volatility	39.6		%	38.8		%
Expected life (in years)	6.2			6.2
Risk-free interest rate	2.4		%	2.9		%

Summary Of Option Activity

Following is a summary of the option activity for the three years ended December 31, 2012:

	Shares Under Option		Weighted Average Exercise Price
Outstanding, January 1, 2010	4,436,143		$	27.44
Granted	504,781		22.68
Forfeited or expired	(22,973	)	21.29
Exercised	(303,679	)	17.32
Outstanding, December 31, 2010	4,614,272		27.62
Granted	483,459		24.87
Forfeited or expired	(230,232	)	22.81
Exercised	(259,796	)	18.34
Outstanding, December 31, 2011	4,607,703		28.09
Forfeited or expired	(40,390	)	27.12
Exercised	(481,611	)	20.70
Outstanding, December 31, 2012	4,085,702		$	28.98

Share Options Outstanding And Exercisable

The following table summarizes information about share options outstanding and exercisable at December 31, 2012:

Range of Exercise Prices	Outstanding						Exercisable
	Number	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price		Aggregate Intrinsic Value (000’s)		Number	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value (000’s)
$11.85 - $17.78	809,936	6.2 years	$	11.85			528,039	$	11.85	6.2 years
$17.79 - $26.69	921,177	7.8 years	$	23.76			307,792	$	23.40	7.7 years
$26.70 - $40.05	1,883,893	3.2 years	$	34.27			1,755,080	$	34.42	3.1 years
$40.06 - $49.62	470,696	3.9 years	$	47.46			470,696	$	47.46	3.9 years
Total	4,085,702	4.9 years	$	28.98	$	—	3,061,607	$	31.42	4.2 years	$	—

Fair Value Of Market-Based Share Awards Assumptions

The fair value of the market-based share awards was estimated on the date of grant using a Monte Carlo valuation model based on the following assumptions:

	Year Ended December 31, 2012
	Minimum		Maximum
Dividend yield	0.0	%	4.4	%
Expected volatility	27.7	%	51.6	%
Expected life (in years)	NA		3
Risk-free interest rate	0.1	%	0.4	%

Summary Of The Status Of Unvested Restricted Shares

A summary of the status of unvested restricted shares for the year ended December 31, 2012 is as follows:

	Unvested Restricted Share Awards		Weighted Average  Grant Date Fair  Value
Outstanding, January 1, 2012	407,328		$	20.43
Granted:
Service-based awards	132,923		24.95
Market-based awards relative to FTSE NAREIT U.S. Shopping Center Index	57,650		26.45
Market-based awards relative to three-year absolute TSR	57,650		27.65
Trust manager awards	28,263		27.19
Vested	(173,237	)	21.62
Forfeited	(14,006	)	22.22
Outstanding, December 31, 2012	496,571		$	23.10