Restructuring and Long-Lived Asset Impairment Charges (Tables)

3 Months Ended

Mar. 31, 2012

Restructuring and Long-Lived Asset Impairment Charges [Abstract]

Restructuring Reserves

	Balance		2012 Activity				Balance
(millions)	as of 12/31/11		Cash Charges		Payments		as of 3/31/12
Severance		$      4		$    1		$    (3)		$      2
Lease obligations		21		-		(1)		20
Other exit costs		9		1		(1)		9
Total		$    34		$    2		$    (5)		$    31