CONSOLIDATED STATEMENT OF CHANGES IN PARTNERS' EQUITY - 9 months ended Sep. 30, 2015 - USD ($) shares in Millions, $ in Millions	Limited Partners Common units ATM Equity Issuance Program	Limited Partners Common units	Limited Partners Class B units Unit issuances	Limited Partners Class B units	General Partner ATM Equity Issuance Program	General Partner	Accumulated Other Comprehensive Loss		Class B units Unit issuances	Non-controlling interests	ATM Equity Issuance Program	Total
Balance as of beginning year at Dec. 31, 2014		$ 1,325				$ 29	$ (2)			$ 234		$ 1,586
Partners' Equity at beginning of year (in units) at Dec. 31, 2014		63.6
Increase (Decrease) in Partners' Equity
Net income		$ 143		$ 2		5				7		157
Other comprehensive loss							(2)					(2)
Equity issuance, net (Note 7); Unit Issuances (Note 6)	$ 25		$ 95		$ 1				$ 95		$ 26
Equity issuance (Note 7); Unit issuances (Note 6) (in units)	0.4		1.9
Acquisition of the remaining 30 percent interest in GTN (Note 6)		(124)				(3)				(232)		(359)
Equity contribution (Note 6)						2						2
Distributions paid		(164)				(5)				$ (9)		(178)
Balance as of end year at Sep. 30, 2015		$ 1,205		$ 97		$ 29	$ (4)	[1]				$ 1,327
Partners' Equity at End of Year (in units) at Sep. 30, 2015		64.0		1.9

[1] Losses related to cash flow hedges reported in Accumulated Other Comprehensive Loss and expected to be reclassified to Net Income in the next 12 months are estimated to be $1 million. These estimates assume constant interest rates over time; however, the amounts reclassified will vary based on actual value of interest rates at the date of settlement.