Net Income (Loss) Per Common Share or Common Unit

Basic net income (loss) per common share or Common Unit is computed by dividing net income (loss) attributable to common shareholders or common unitholders, less dividends or distributions on share-based awards expected to vest (referred to as "participating securities" and primarily composed of unvested restricted stock units), by the weighted average number of common shares or Common Units outstanding for the period.

Diluted net income (loss) per common share is computed by dividing the sum of basic net income (loss) attributable to common shareholders and the noncontrolling interest in earnings allocable to Limited Partner Units (to the extent the Limited Partner Units are dilutive) by the sum of the weighted average number of common shares outstanding and, to the extent they are dilutive, Units outstanding and any potential dilutive securities for the period. Diluted net income (loss) per Common Unit is computed by dividing the basic net income (loss) attributable to common unitholders by the sum of the weighted average number of Common Units outstanding and any potential dilutive securities for the period. The following table reconciles the components of basic and diluted net income per common share or Common Unit for the three and six months ended June 30, 2014 and 2013, respectively (in thousands):



	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
General Partner
Net income attributable to common shareholders	$	127,688		$	61,494		$	146,371		$	89,537
Less: Dividends on participating securities	(646		)	(688		)	(1,289		)	(1,375		)
Basic net income attributable to common shareholders	127,042			60,806			145,082			88,162
Noncontrolling interest in earnings of common unitholders	1,693			842			1,943			1,234
Diluted net income attributable to common shareholders	$	128,735		$	61,648		$	147,025		$	89,396
Weighted average number of common shares outstanding	331,753			322,489			329,442			318,733
Weighted average Limited Partner Units outstanding	4,386			4,388			4,386			4,397
Other potential dilutive shares	275			221			274			220
Weighted average number of common shares and potential dilutive securities	336,414			327,098			334,102			323,350

Partnership
Net income attributable to common unitholders	$	129,381		$	62,336		$	148,314		$	90,771
Less: Distributions on participating securities	(646		)	(688		)	(1,289		)	(1,375		)
Basic and diluted net income attributable to common unitholders	$	128,735		$	61,648		$	147,025		$	89,396
Weighted average number of Common Units outstanding	336,139			326,877			333,828			323,130
Other potential dilutive units	275			221			274			220
Weighted average number of Common Units and potential dilutive securities	336,414			327,098			334,102			323,350

Substantially all potential shares related to our stock-based compensation plans are anti-dilutive for all periods presented. The following table summarizes the data that is excluded from the computation of net income per common share or Common Unit as a result of being anti-dilutive (in thousands):



	Three Months Ended June 30,		Six Months Ended June 30,
	2014	2013	2014	2013
General Partner and Partnership
Potential dilutive shares or units:
Anti-dilutive outstanding potential shares or units under fixed stock option and other stock-based compensation plans	1,215	1,373	1,215	1,373
Outstanding participating securities	3,830	3,949	3,830	3,949