CONSOLIDATED STATEMENT OF CHANGES IN PARTNERS' EQUITY (USD $) In Millions, unless otherwise specified	Total		Common Units	General Partner	Accumulated Other Comprehensive Loss
Partners' equity at Dec. 31, 2011	$ 1,333		$ 1,307	$ 27	$ (1)
Partners' equity (in units) at Dec. 31, 2011	53.5		53.5
Increase (Decrease) in Partners' Equity
Net income	39	[1]	38	1
Distributions paid	(42)		(41)	(1)
Partners' equity at Mar. 31, 2012	$ 1,330		$ 1,304	$ 27	$ (1)
Partners' equity (in units) at Mar. 31, 2012	53.5		53.5

[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.