Partners' Capital and Distributions (Tables)

3 Months Ended

Mar. 31, 2013

Total cash distributions paid or to be paid

The following table details the distributions paid during or pertaining to the first three months of 2013, net of reductions to the general partner’s incentive distributions (in millions, except per unit amounts):

		Distributions Paid								Distributions
		Common		General Partner						per limited
Date Declared	Date Paid or To Be Paid	Units		Incentive		2%		Total		partner unit
April 8, 2013	May 15, 2013 (1)	$	195	$	86	$	4	$	285	$	0.5750
January 7, 2013	February 14, 2013	$	189	$	81	$	4	$	274	$	0.5625

(1) Payable to unitholders of record at the close of business on May 3, 2013, for the period January 1, 2013 through March 31, 2013.

Schedule of changes in noncontrolling interests in partners' capital

The following table reflects the changes in the noncontrolling interests in partners’ capital (in millions):

	Three Months Ended March 31,
	2013			2012
Beginning balance	$	509		$	524
Net income attributable to noncontrolling interests	8			7
Distributions to noncontrolling interests	(12		)	(12		)
Equity compensation expense	1			1
Other	1			—
Other comprehensive income/(loss):
Reclassification adjustments	2			(6		)
Net deferred gain/(loss) on cash flow hedges	(5		)	2
Ending balance	$	504		$	516