Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2011

Earnings Per Share

Computation of basic and diluted earnings per common share

		For the Year Ended December 31,

		2011			2010			2009
		(In thousands, except per share amounts)
Numerator for basic and diluted earnings per share:
Income from continuing operations attributable to common stockholders		$	362,810		$	215,324		$	190,423
Discontinued operations			1,683			30,843			76,072

Net income attributable to common stockholders		$	364,493		$	246,167		$	266,495

Denominator:
Denominator for basic earnings per share—weighted average shares			228,453			156,608			152,566
Effect of dilutive securities:
Stock options			449			407			126
Restricted stock awards			53			70			64
OP units			942			—			—
Convertible notes			893			572			2

Denominator for diluted earnings per share—adjusted weighted average shares			230,790			157,657			152,758

Basic earnings per share:
Income from continuing operations attributable to common stockholders		$	1.59		$	1.37		$	1.25
Discontinued operations			0.01			0.20			0.50

Net income attributable to common stockholders		$	1.60		$	1.57		$	1.75

Diluted earnings per share:
Income from continuing operations attributable to common stockholders		$	1.57		$	1.36		$	1.24
Discontinued operations			0.01			0.20		$	0.50

Net income attributable to common stockholders		$	1.58		$	1.56		$	1.74