Three Months Ended March 31,
		2007				2006
Earnings available to cover fixed charges:
Income before income taxes and cumulative effect of accounting change		$	139			$	150
Plus: Fixed charges			47				29
Amortization of capitalized interest			3				1
Less: Capitalized interest			6				2
Earnings available to cover fixed charges		$	183			$	178
Fixed charges(*):
Interest, including amortization of deferred financing costs		$	41			$	24
Interest portion of rental payments			6				5
Total fixed charges		$	47			$	29
Ratio of earnings to fixed charges			3.89x				6.14x

(*)	Consists of interest expense on all indebtedness (including amortization of deferred financing costs) and the portion of operating lease rental expense that is representative of the interest factor.