Partners' Capital and Distributions (Tables)

6 Months Ended

Jun. 30, 2018

Limited Partners' Capital Account [Line Items]

Schedule of activity for preferred units and common units

The following tables present the activity for our preferred and common units:



	Limited Partners
	Series A Preferred Units	Series B Preferred Units	Common Units
Outstanding at December 31, 2017	69,696,542	800,000	725,189,138
Issuance of Series A preferred units in connection with in-kind distribution	1,393,926	—	—
Other	—	—	393,601
Outstanding at June 30, 2018	71,090,468	800,000	725,582,739



	Limited Partners
	Series A Preferred Units	Common Units
Outstanding at December 31, 2016	64,388,853	669,194,419
Issuances of Series A preferred units in connection with in-kind distributions	2,601,300	—
Sales of common units	—	54,119,893
Issuance of common units in connection with acquisition of interest in Advantage Joint Venture	—	1,252,269
Other	—	130,154
Outstanding at June 30, 2017	66,990,153	724,696,735

Series A Preferred Units

Limited Partners' Capital Account [Line Items]

Schedule of cash distributions to common unitholders

The following table details distributions paid to our Series A preferred unitholders during or pertaining to the first six months of 2018 (in millions, except unit and per unit data):



	Series A Preferred Unitholders
	Distribution ⁽²⁾			Distribution per Unit
Distribution Payment Date	Cash		Units	Distribution per Unit
August 14, 2018 ⁽¹⁾	$	37	—	$	0.525
May 15, 2018	$	37	—	$	0.525
February 14, 2018	$	—	1,393,926	$	0.525


⁽¹⁾	Payable to unitholders of record at the close of business on July 31, 2018 for the period from April 1, 2018 through June 30, 2018. At June 30, 2018, such amount was accrued to distributions payable in “Accounts payable and accrued liabilities” on our Condensed Consolidated Balance Sheet.

⁽²⁾

On February 14, 2018, we issued additional Series A preferred units in lieu of a cash distribution of $37 million. With respect to any quarter ending on or prior to December 31, 2017 (the “Initial Distribution Period”), we were able to elect to pay distributions on our Series A preferred units in additional Series A preferred units, in cash or a combination of both. The Initial Distribution Period ended with the February 2018 distribution; as such, with respect to any quarter ending after the Initial Distribution Period, we must pay distributions on our Series A preferred units in cash.

Series B Preferred Units

Limited Partners' Capital Account [Line Items]

Schedule of cash distributions to common unitholders

The following table details distributions paid to our Series B preferred unitholders during the first six months of 2018 (in millions, except per unit data):



	Series B Preferred Unitholders
Distribution Payment Date	Cash Distribution		Distribution per Unit
May 15, 2018	$	24.5	$	30.625

Common Units

Limited Partners' Capital Account [Line Items]

Schedule of cash distributions to common unitholders

The following table details distributions paid during or pertaining to the first six months of 2018 (in millions, except per unit data):



	Distributions						Cash Distribution per Common Unit
	Common Unitholders				Total Cash Distribution
Distribution Payment Date	Public		AAP		Total Cash Distribution
August 14, 2018 ⁽¹⁾	$	133	$	85	$	218	$	0.30
May 15, 2018	$	133	$	85	$	218	$	0.30
February 14, 2018	$	133	$	85	$	218	$	0.30


⁽¹⁾	Payable to unitholders of record at the close of business on July 31, 2018 for the period from April 1, 2018 through June 30, 2018.