CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Net income	$ 35	[1]	$ 41	[1]	$ 107	[1],[2]	$ 119	[1],[2]
Other comprehensive income
Change associated with current period hedging transactions (Note 10)			3				10
Total comprehensive income	$ 35		$ 44		$ 107		$ 129

[1] 25 percent interests in each of GTN and Bison were acquired in May 2011.

[2] 25 percent interests in each of GTN and Bison were acquired in May 2011, the first distribution was received in the fourth quarter of 2011.