Restructuring and Goodwill Impairment Charge (Tables)

9 Months Ended

Sep. 30, 2011

Restructuring and Goodwill Impairment Charge [Abstract]

Rollforward of Restructuring Reserve

	December 31,												September 30,
	2010				2011			Impact of					2011
	Restructuring		2011		Cash			Exchange		Reserve			Restructuring
	Reserve		Expenses		Payments			Rates		Adjustments			Reserve
	(Millions)
Severance	$	7		7		(12	)		—		(1	)	$	1