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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%