Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	Benefit			Accumulated Other Comprehensive
	Obligations			Loss
	(In millions)
Beginning balance January 1, 2012	$	(20	)	$	(20	)
Current period change	(2		)	(2		)
Ending balance December 31, 2012	$	(22	)	$	(22	)