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Consolidated Statements of Equity - USD ($)
Total
Public
Limited Partners Common Units
Public
Limited Partners Class B Units
MPC
Limited Partners Common Units
MPC
General Partner
AOCI Attributable to Parent
Noncontrolling Interest
Equity of Predecessor
MPC
Beginning balance at Dec. 31, 2015 $ 9,946,000,000 $ 7,691,000,000 $ 266,000,000 $ 465,000,000 $ 819,000,000 $ 0 $ 13,000,000 $ 692,000,000
Distributions to MPC from Predecessor (104,000,000) 0 0 0 0 0 0 104,000,000
Contribution from MPC 225,000,000 0 0 84,000,000 141,000,000 0 0 0
Unit issuances under ATM Program 792,000,000 776,000,000 0 0 16,000,000 0 0 0
Stockholders' Equity, Other 6,000,000 6,000,000 0 0 0 0 0 0
Net income (loss) (393,000,000) (5,000,000) 0 6,000,000 191,000,000 0 (2,000,000) (199,000,000)
Allocation of MPC's net investment at acquisition 0 0 0 (669,000,000) 337,000,000 0 0 332,000,000
MPC of MarkWest Hydrocarbon (188,000,000) 0 0 0 (188,000,000) 0 0 0
Unitholders and GP (845,000,000) (513,000,000) 0 (142,000,000) (190,000,000) 0 0 0
Noncontrolling interests (3,000,000) 0 0 0 0 0 (3,000,000) 0
Noncash Partner Capital Account Distributions 563,000,000 0 0 0 563,000,000 0 0 0
Contributions from noncontrolling interests 6,000,000 0 0 0 0 0 6,000,000 0
Unit conversion 0 (133,000,000) 133,000,000 0 0 0 0 0
Non-cash contribution from MPC 336,000,000 0 0 0 0 0 0 (336,000,000)
Deferred income tax impact from changes in equity 17,000,000 2,000,000 0 13,000,000 2,000,000 0 0 0
Ending balance at Dec. 31, 2016 11,110,000,000 8,086,000,000 133,000,000 1,069,000,000 1,013,000,000 0 18,000,000 791,000,000
Distributions to MPC from Predecessor (113,000,000) 0 0 0 0 0 0 113,000,000
Distribution declared, general partner (32,000,000) 0 0 0 (32,000,000) 0 0 0
Contribution from MPC 675,000,000 0 0 0 0 (14,000,000) 0 689,000,000
Unit issuances under ATM Program 483,000,000 473,000,000 0 0 10,000,000 0 0 0
Stockholders' Equity, Other 8,000,000 8,000,000 0 0 0 0 0 0
Net income (loss) (771,000,000) 301,000,000 0 110,000,000 318,000,000 0 (6,000,000) (36,000,000)
Allocation of MPC's net investment at acquisition 0 0 0 (1,669,000,000) 266,000,000 0 0 1,403,000,000
Distribution to MPC for acquisitions (1,931,000,000) 0 0 (537,000,000) (1,394,000,000) 0 0 0
Unitholders and GP (1,120,000,000) (622,000,000) 0 (212,000,000) (286,000,000) 0 0 0
Noncontrolling interests (7,000,000) 0 0 0 0 0 (7,000,000) 0
Contributions from noncontrolling interests 129,000,000 0 0 0 0 0 129,000,000 0
Unit conversion 0 (133,000,000) 133,000,000 0 0 0 0 0
Ending balance at Dec. 31, 2017 9,973,000,000 8,379,000,000 0 2,099,000,000 (637,000,000) (14,000,000) 146,000,000 0
Distributions to MPC from Predecessor 0              
Contribution from MPC 1,046,000,000 0 0 0 0 0 0 1,046,000,000
Stockholders' Equity, Other 11,000,000 12,000,000 0 0 1,000,000 (2,000,000) 0 0
Net income (loss) (1,759,000,000) 667,000,000 0 1,076,000,000 0 0 (16,000,000) 0
Allocation of MPC's net investment at acquisition 0 0 0 (5,172,000,000) 4,126,000,000 0 0 1,046,000,000
Distribution to MPC for acquisitions (4,100,000,000) 0 0 (936,000,000) (3,164,000,000) 0 0 0
Unitholders and GP (1,819,000,000) (722,000,000) 0 (1,097,000,000) 0 0 0 0
Noncontrolling interests (17,000,000) 0 0 0 0 0 (17,000,000) 0
Contributions from noncontrolling interests 11,000,000 0 0 0 0 0 11,000,000 0
Unit conversion 0 0 0 (7,926,000,000) 7,926,000,000 0 0 0
Ending balance at Dec. 31, 2018 $ 6,864,000,000 $ 8,336,000,000 $ 0 $ (1,612,000,000) $ 0 $ (16,000,000) $ 156,000,000 $ 0