v3.4.0.3
Equity Equity, Earnings per unit (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Net earnings $ 92 $ 70
Net Income (Loss) Attributable to Noncontrolling Interest 0 10
Net Income (Loss) Attributable to Parent   $ 60
Distribution Made to Limited Partner, Cash Distributions Declared $ 50  
Common units - basic 93.6 80.3
Common units - diluted 93.6 80.3
Common - basic $ 0.64 $ 0.63
Common - diluted $ 0.64 $ 0.63
General Partner    
Net earnings $ 32  
General Partner Distributions 2 $ 2
Incentive Distribution, Subsequent Distribution Amount 30  
Participating Securities, Distributed and Undistributed Earnings (Loss), Basic 32 14
Common    
Net earnings 60  
Distribution Made to Limited Partner, Cash Distributions Declared 76 56
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic   10
Participating Securities, Distributed and Undistributed Earnings (Loss), Basic $ 60 $ 46