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Partners' Capital (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
Mar. 30, 2017 | Mar. 31, 2018 | Dec. 31, 2017
Schedule of Partners' Capital [Line Items] |  |  |
Percentage of membership interest acquired |  | 100.00% |
Class C Units [Member] |  |  |
Schedule of Partners' Capital [Line Items] |  |  |
Eligible distributions per unit (in dollars per share) |  | $ 0.8682 |
Other certain allocation percentage |  | 1.00% |
Distribution Made to Limited Partner, Cash Distributions Declared |  | $ 14 |
Units exchanged (in shares) |  | 16,410,780 |
Series A Preferred Units [Member] |  |  |
Schedule of Partners' Capital [Line Items] |  |  |
Equity Issued To Partners Capital Account | $ 300 |  |
Limited Partners' Capital Account, Units Outstanding |  | 0 | 12,000,000
Common Units |  |  |
Schedule of Partners' Capital [Line Items] |  |  |
Limited Partners' Capital Account, Units Outstanding |  | 54,028,041 |
Parent Company [Member] |  |  |
Schedule of Partners' Capital [Line Items] |  |  |
Percentage of membership interest acquired |  | 34.50% |

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- Definition Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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