CONSOLIDATED STATEMENT OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013		Sep. 30, 2014	Sep. 30, 2013
CONSOLIDATED STATEMENT OF INCOME
Transmission revenues	$ 80	$ 85		$ 249	$ 253	[1]
Equity earnings from unconsolidated affiliates (Note 4)	15	15		66	48	[1]
Operation and maintenance expenses	(14)	(13)		(38)	(39)	[1]
Property taxes	(5)	(6)		(17)	(18)	[1]
General and administrative	(5)	(2)		(8)	(8)	[1]
Depreciation	(21)	(21)		(64)	(64)	[1]
Financial charges and other	(11)	(12)		(37)	(31)	[1]
Net income	39	46		151	141	[1]
Net income attributable to non-controlling interests	8	9		26	27	[1]
Net income attributable to controlling interests, including GTN and Bison's former parent					114	[1]
Net income attributable to controlling interests	31	37		125	88	[1],[2]
Net income attributable to controlling interests allocation (Note 7)
Common units	30	36		122	86	[1],[2]
General Partner	1	1		3	2	[1]
Net income attributable to controlling interests	$ 31	$ 37		$ 125	$ 88	[1],[2]
Net income per common unit (Note 7) - basic (in dollars per unit)	$ 0.48	$ 0.58		$ 1.96	$ 1.50	[1],[2]
Net income per common unit (Note 7) - diluted (in dollars per unit)	$ 0.48	$ 0.58		$ 1.96	$ 1.50	[1],[2]
Weighted average common units outstanding (millions) - basic (in units)	62.6	62.3		62.4	57.8	[1]
Weighted average common units outstanding (millions) - diluted (in units)	62.6	62.3		62.4	57.8	[1]
Common units outstanding, end of period (millions) (in units)	63.6	62.3	[1]	63.6	62.3	[1]

[1] Recast as discussed in Note 2.

[2] Recast as discussed in Note 7.