EXHIBIT 12.1

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

The ratio of earnings to fixed charges, as well as any deficiency of earnings are determined using the following applicable factors: 

Earnings available for fixed charges are calculated first, by determining the sum of: (a) income (loss) from continuing operations before income taxes and equity income; (b) distributed equity income; (c) fixed charges, as defined below; 

Fixed charges are calculated as the sum of: (a) interest costs; and (B) that portion of rental expense that is representative of the interest factor.

	Year Ended December 31,
(in millions)	2013		2012		2011		2010			2009
Fixed charges:
Interest expense	$	2	$	449	$	985	$	585		$	566
Portion of rental expense which represents interest factor		15		15		15		14			14
Total Fixed charges	$	17	$	464	$	1000	$	599		$	580
Earnings available for fixed charges:
Pre-tax income (loss)	$	1,358	$	3,811	$	1,044	$	(1,726	)	$	(2,488	)
Add: Fixed charges		17		464		1,000		599			580
Total Earnings available for fixed charges	$	1,375	$	4,275	$	2,044	$	(1,127	)	$	(1,908	)
Ratio of earnings to fixed charges		81		9		2		*			**

* Earnings for the year ended December 31, 2010 were inadequate to cover fixed charges by $1,726

** Earnings for the year ended December 31, 2009 were inadequate to cover fixed charges by $2,488