Exhibit 12

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(In millions, except ratios)

	Year Ended December 31,															Six Months Ended June 30,
	2010			2011			2012			2013			2014			2015
Earnings:
(Loss) income from continuing operations before (benefit) provision for income taxes	$	(63	)	$	164		$	88		$	605		$	850		$	331
Add:
Fixed charges, net of capitalized interest	279			271			504			521			520			254
Total earnings available for fixed charges	216			435			592			1,126			1,370			585
Fixed charges (1):
Interest expense, net	255			228			512			475			555			353
Add back interest income, which is netted in interest expense	1			1			2			1			2			1
Add back gains (losses) on bond repurchases/retirement of subordinated convertible debentures, included in interest expense	(28		)	(5		)	(72		)	(3		)	(80		)	(123		)
Interest expense—subordinated convertible debentures, net	8			7			4			3			—			—
Capitalized interest	—			—			—			—			—			—
Interest component of rent expense	43			40			58			45			43			23
Fixed charges	$	279		$	271		$	504		$	521		$	520		$	254
Ratio of earnings to fixed charges	—  (2)			1.6x			1.2x			2.2x			2.6x			2.3x

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(1) Fixed charges consist of interest expense, which includes amortization of deferred finance charges, interest expense-subordinated debentures, capitalized interest and imputed interest on our lease obligations. The interest component of rent was determined based on an estimate of a reasonable interest factor at the inception of the leases.

(2) The ratio coverage was less than 1:1 for the year ended December 31, 2010 due to our loss for the year. We would have had to have generated additional earnings of $63 for the year ended December 31, 2010 to have achieved a coverage ratio of 1:1.