CONSOLIDATED STATEMENT OF CHANGES IN PARTNERS' EQUITY (USD $) In Millions, unless otherwise specified	Limited Partners ATM Equity Issuance	Limited Partners	General Partner ATM Equity Issuance	General Partner	Accumulated Other Comprehensive Loss	Controlling interests ATM Equity Issuance	Controlling interests	Non-controlling interests	ATM Equity Issuance	Total
Balance at beginning of period at Dec. 31, 2013		$ 1,322		$ 28	$ (1)		$ 1,349	$ 440		$ 1,789
Partners' Equity (in units) at Dec. 31, 2013		62.3					62.3
Increase (Decrease) in Partners' Equity
Net income		122		3			125	26		151
Other Comprehensive Loss					(1)		(1)			(1)
Equity Issuance (Note 6)	72		1			73			73
Equity Issuance (Note 6) (in shares)	1.3					1.3
Distributions paid		(154)		(3)			(157)	(42)		(199)
Balance at end of period at Sep. 30, 2014		$ 1,362		$ 29	$ (2)		$ 1,389	$ 424		$ 1,813
Partners' Equity (in units) at Sep. 30, 2014		63.6					63.6