Exhibit 12

COMPUTATION OF RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS

	Years Ended December 31 ,									Four Months Ended December31,				Eight Months Ended August 31,			Year Ended December31,
(in millions)	2016			2015		2014				2013				2013			2012
Income (loss) from continuing operations   before income taxes	$	78		$	2	$	(49	)		$	(55	)		$	2,406		$	(1,610	)
Series A preferred stock dividends		(3	)		—		—		#		—		#		—	#		—
Income (loss) from continuing operations before income    taxes attributable to common stockholders		75			2		(49	)	#		(55	)	#		2,406	#		(1,610	)
Adjustments:
Interest expense		60			63		62				22				106			139
Interest component of rental expense (1)		9			10		13				5				12			20
Amortization of capitalized interest		—			—		—				—				—			2
Series A preferred stock dividends		3			—		—		#		—		#		—	#		—
Earnings available for fixed charges	$	147		$	75	$	26		#	$	(28	)	#	$	2,524	#	$	(1,449	)
Fixed charges:
Interest expense		60			63		62				22				106			139
Interest component of rental expense (1)		9			10		13				5				12			20
Capitalized interest		-			2		3				—				—			1
Series A preferred stock dividends		3			—		—		#		—		#		—	#		—
Total fixed charges and preferred stock dividends	$	72		$	75	$	78		#	$	27		#	$	118	#	$	160
Ratio of earnings to combined fixed charges and preferred stock dividends		2.0			1.0	*				**					21.4		* * *

⁽¹⁾ Interest component of rental expense is estimated to equal 1/3 of such expense, which is considered a reasonable approximation of the interest factor.

* Earnings for the year ended December 31, 2014 were inadequate to cover fixed charges.  The coverage deficiency was $52 million.

* * Earnings for the four months ended December 31, 2013 were inadequate to cover fixed charges.  The coverage deficiency was $55 million.

* * * Earnings for the year ended December 31, 2012 were inadequate to cover fixed charges.  The coverage deficiency was $1,609 million.