Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2012

Related Party Transactions Tables [Abstract]

Schedule of Related Party Transactions [Table Text Block]

	Years Ended December 31,
	2012		2011		2010
	(in millions)
Revenue - Non-Regulated	$	926	$	736	$	686
Revenue - Regulated		37		39		26
Cost of Sale - Non-Regulated		63		77		36
Interest expense		8		4		2
Other income		4		6		-

Schedule of Related Party Receivables Payables [Table Text Block]

	2012		2011
	(in millions)
Receivables from related parties	$	178	$	164
Payables to related parties		7		12

	2012		2011
	(in millions)
Receivables from related parties	$	178	$	164
Payables to related parties		7		12