Exhibit 11

Statements Re: Computation of Per Share Earnings

(Dollars in millions except share data)	Three months ended June 30,					Six months ended June 30,
	2011			2010		2011		2010
Numerator:
Net income (loss)—basic and diluted	$	(49	)	$	27	$	13	$	95
Denominator:
Weighted-average common shares outstanding		163,068,516			162,824,857		163,004,712		162,849,794
Effect of stock based awards		-			459,156		680,191		443,541
Adjusted weighted-average shares		163,068,516			163,284,013		163,684,903		163,293,335
Earnings (loss) per share:
Basic	$	(0.30	)	$	0.17	$	0.08	$	0.59
Diluted		(0.30	)		0.17		0.08		0.58
Number of anti-dilutive stock based awards		7,857,634			9,689,589		7,852,866		9,758,457
Exercise price of anti-dilutive stock based awards	$	26.58-45.26		$	26.58-45.26	$	29.20-45.26	$	26.58-45.26

Due to the net loss in the second quarter of 2011, the assumed exercise of certain stock options was excluded from the computation of diluted loss per share.

Certain stock-based compensation awards were not included in the computation of diluted earnings per share for the three- and six-month periods ended June 30, 2011 and 2010, since inclusion of these awards would have anti-dilutive effects.