The following table shows the calculation of basic and diluted net earnings (loss) per common share under the two-class method.


	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2013			2012			2013			2012
*Basic Net Earnings (Loss) Per Common Share:*
Numerator
Net earnings (loss) available to common stockholders	$	37.7		$	(1,232.4	)	$	96.7		$	(1,252.0	)
Distributed and allocated undistributed net earnings (loss) to non-vested restricted stockholders		(0.2	)		(0.1	)		(0.5	)		(0.4	)

Distributed and allocated undistributed net earnings (loss) to common stockholders		37.5			(1,232.5	)		96.2			(1,252.4	)
Distributed net earnings — dividends paid to common stockholders		(25.3	)		(25.1	)		(75.9	)		(75.3	)

Allocation of undistributed net earnings (loss) to common stockholders	$	12.2		$	(1,257.6	)	$	20.3		$	(1,327.7	)

Denominator⁽¹⁾
Weighted average number of common shares outstanding — basic		194.9			193.2			194.5			192.7
Basic net earnings (loss) per common share:
Distributed net earnings (loss) to common stockholders	$	0.13		$	0.13		$	0.39		$	0.39
Allocated undistributed net earnings (loss) to common stockholders		0.06			(6.51	)		0.11			(6.89	)

Basic net earnings (loss) per common share:	$	0.19		$	(6.38	)	$	0.50		$	(6.50	)

*Diluted Net Earnings (Loss) Per Common Share:*
Numerator
Distributed and allocated undistributed net earnings (loss) to common stockholders	$	37.5		$	(1,232.5	)	$	96.2		$	(1,252.4	)
Add: Allocated undistributed net earnings (loss) to non-vested restricted stockholders		0.1			—			0.1			—
Less: Undistributed net earnings (loss) reallocated to non-vested restricted stockholders		(0.1	)		—			(0.1	)		—

Net earnings (loss) available to common stockholders — diluted	$	37.5		$	(1,232.5	)	$	96.2		$	(1,252.4	)

Denominator⁽¹⁾
Weighted average number of common shares outstanding — basic		194.9			193.2			194.5			192.7
Effect of assumed issuance of Settlement agreement shares		18.0			—			18.0			—
Effect of non-vested restricted stock units		0.8			—			0.9			—

Weighted average number of common shares outstanding — diluted		213.7			193.2			213.4			192.7

Diluted net earnings (loss) per common share	$	0.18		$	(6.38	)	$	0.45		$	(6.50	)

⁽¹⁾	In calculating diluted net earnings (loss) per common share for 2012, our diluted weighted average number of common shares outstanding excludes the effect of assumed issuance of shares under the Settlement agreement and non-vested restricted stock units as the effect was anti-dilutive.