EXHIBIT 12

Computation of Ratio of Earnings to Fixed Charges

	2007			2006		2005		2004			2003
(in millions)
Income (loss) before income tax (expense) benefit	$	(73	)	$	395	$	145	$	(35	)	$	(316	)
Cumulative effect of changes in accounting principle		—			—		—		—			—
Interest expense(A)		493			418		300		219			260
Debt expense amortization		9			13		8		18			7
Interest portion of rent expense (33%)		17			15		15		13			13
Total earnings		446			841		468		215			(36	)
Capitalized interest		7			6		1		1			6
Interest expense(A)		510			433		314		232			273
Debt expense amortization		9			13		8		18			7
Total fixed charges		526			452		323		251			286
Ratio of earnings to fixed charges		0.85			1.86		1.45		0.86			(0.13	)
Earnings shortfall		(80	)		—		—		(36	)		(322	)

(A) Excludes interest expense on income tax contingencies.

E-37