Exhibit 12

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(in millions, except ratios)

For the year ended December 31,	2013			2012			2011			2010			2009
Earnings:
(Loss) income from continuing operations before income taxes	$	(1,816	)	$	324		$	1,063		$	548		$	(1,498	)
Noncontrolling interests’ share of earnings of majority-owned subsidiaries without fixed charges		-			-			-			-			-
Equity income		(12	)		(99	)		(127	)		(54	)		(17	)
Fixed charges added to earnings		493			533			568			532			508
Distributed income of less than 50 percent-owned persons		89			101			100			33			56
Amortization of capitalized interest:
Consolidated		46			44			43			39			30
Proportionate share of 50 percent-owned persons		-			-			-			-			-
Total earnings	$	(1,200	)	$	903		$	1,647		$	1,098		$	(921	)
Fixed Charges:
Interest expense:
Consolidated	$	453		$	490		$	524		$	494		$	470
Proportionate share of 50 percent-owned persons		-			-			-			-			-
		453			490			524			494			470
Amount representative of the interest factor in rents:
Consolidated		40			43			44			38			38
Proportionate share of 50 percent-owned persons		-			-			-			-			-
		40			43			44			38			38
Fixed charges added to earnings		493			533			568			532			508
Interest capitalized:
Consolidated		99			93			102			96			165
Proportionate share of 50 percent-owned persons		-			-			-			-			-
		99			93			102			96			165
Preferred stock dividend requirements of majority-owned subsidiaries		-			-			-			-			-
Total fixed charges	$	592		$	626		$	670		$	628		$	673
Ratio of earnings to fixed charges		(A	)		1.4			2.5			1.7			(B	)

(A) For the year ended December 31, 2013, there was a deficiency of earnings to cover the fixed charges of $1,792.

(B) For the year ended December 31, 2009, there was a deficiency of earnings to cover the fixed charges of $1,594.