CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Net income	$ 39	[1]	$ 42	[1]
Other comprehensive income
Change associated with current period hedging transactions (Note 10)			4
Total comprehensive income	$ 39		$ 46

[1] There were no equity earnings from GTN and Bison in the 2011 period as the 25 percent interests in each were acquired in May 2011.