Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets Parentheticals

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Consolidated Balance Sheets Parentheticals - shares
shares in Millions
9 Months Ended 12 Months Ended
Sep. 30, 2017
Dec. 31, 2016
General Partner Ownership Interest Percentage 2.00% 2.00%
General Partners' Capital Account, Units Issued 9.9 6.9
General partner units outstanding 9.9 6.9
Common Units [Member]    
Limited Partners' Capital Account, Units Issued 348.6 57.1
Partnership unitholders units outstanding 348.6 57.1
Class B Units [Member]    
Limited Partners' Capital Account, Units Issued 0.0 145.3
Partnership unitholders units outstanding 0.0 145.3
Subordinated Units [Member]    
Limited Partners' Capital Account, Units Issued 135.4 135.4
Partnership unitholders units outstanding 135.4 135.4