Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2012

Earnings Per Share (Tables) [Abstract]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Numerator:
Amounts attributable to common stockholders:
Income from continuing operations	$	99,623		$	101,570		$	238,961		$	189,756
(Loss) income from discontinued operations	—			(635		)	19,332			(2,517		)
Net income (numerator for diluted EPS)	99,623			100,935			258,293			187,239
Less: Preference stock dividend	(13		)	(14		)	(26		)	(29		)
Income attributable to common stockholders (numerator for basic EPS)	$	99,610		$	100,921		$	258,267		$	187,210
Denominator (in thousands):
Weighted-average shares used in basic EPS	200,252			203,171			200,091			203,372
Effect of dilutive shares:
Preferred stock	2			2			2			2
Preference stock	398			453			399			454
Stock plans	459			459			407			399
Weighted-average shares used in diluted EPS	201,111			204,085			200,899			204,227
Basic earnings per share:
Income from continuing operations	$	0.50		$	0.50		$	1.19		$	0.93
Income (loss) from discontinued operations	—			—			0.10			(0.01		)
Net income	$	0.50		$	0.50		$	1.29		$	0.92
Diluted earnings per share:
Income from continuing operations	$	0.50		$	0.50		$	1.19		$	0.93
Income (loss) from discontinued operations	—			—			0.10			(0.01		)
Net income	$	0.50		$	0.49		$	1.29		$	0.92
Anti-dilutive shares (in thousands):
Anti-dilutive shares not used in calculating diluted weighted-average shares	13,737			14,224			14,517			14,023