Other Income and Expense (Tables)

3 Months Ended

Mar. 31, 2012

Other Income Expense Tables [Abstract]

Components Of Other Expense Table

	Three Months Ended
	March 31,
	2012		2011
	(in millions)
Loss on sale and disposal of assets	$	24	$	10
Other		5		5
Total other expense	$	29	$	15