v3.5.0.2
Equity, Cash Distributions (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jul. 20, 2016
May 13, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Jun. 30, 2016
Distribution Made to Member or Limited Partner            
General partner distribution amount forfeited     $ 2     $ 5
Quarterly Distribution Per Unit       $ 0.810 $ 0.780  
Total Cash Distribution including general partner IDRs     $ 123 [1] $ 108 $ 98  
Date of Distribution   May 13, 2016 Aug. 12, 2016 [1]   Feb. 12, 2016  
Unitholders Record Date     Aug. 02, 2016 [1] May 02, 2016 Feb. 02, 2016  
Subsequent Event            
Distribution Made to Member or Limited Partner            
Quarterly Distribution Per Unit [1] $ 0.842          
Distribution Made to Limited Partner, Declaration Date Jul. 20, 2016          
[1] This distribution was declared on July 20, 2016 and will be paid on the date of distribution.