CONSOLIDATED STATEMENT OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Equity earnings from unconsolidated affiliates (Note 3)	$ 31		$ 37		$ 69		$ 76
Transmission revenues	16		18		32		35
Operating expenses	(4)		(3)		(8)		(6)
General and administrative	(2)		(5)		(4)		(7)
Depreciation	(3)		(4)		(6)		(8)
Financial charges and other	(5)		(7)		(11)		(12)
Net income	33	[1]	36	[1]	72	[1]	78	[1]
Net income allocation (Note 6)
Common units	32		35		70		76
General Partner	1		1		2		2
Net income allocated to partners (Note 6)	$ 33		$ 36		$ 72		$ 78
Net income per common unit (Note 6) (in dollars per unit)	$ 0.60		$ 0.69		$ 1.31		$ 1.58
Weighted average common units outstanding (millions) (in units)	53.5		50.9		53.5		48.6
Common units outstanding, end of period (millions) (in units)	53.5		53.5		53.5		53.5

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