CONSOLIDATED STATEMENT OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Equity earnings from unconsolidated affiliates (Note 3)	$ 38	[1]	$ 39	[1]
Transmission revenues	16		17
Operating expenses	(4)		(3)
General and administrative	(2)		(2)
Depreciation	(3)		(4)
Financial charges and other	(6)		(5)
Net income	39	[1]	42	[1]
Net income allocation (Note 6)
Common units	38		41
General partner	1		1
Net income allocated to partners (Note 6)	$ 39		$ 42
Net income per common unit (Note 6) (in dollars per unit)	$ 0.71		$ 0.90
Weighted average common units outstanding (millions) (in units)	53.5		46.2
Common units outstanding, end of quarter (millions) (in units)	53.5		46.2

[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.