v3.7.0.1
Equity Equity, Earnings Per Unit (Details)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2017
USD ($)
$ / shares
shares
Mar. 31, 2016
USD ($)
$ / shares
shares
Net earnings $ 92.0 $ 85.0
Special Allocations Of Net Earnings [1] 1.0 0.0
Net earnings, including Special Allocations 93.0 85.0
Distribution Made to Limited Partner, Cash Distributions Declared 77.0  
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic $ (47.0) $ (23.0)
Common units - basic | shares 104.8 93.6
Common units - diluted | shares 104.9 93.6
Common - basic | $ / shares $ 0.51 $ 0.64
Common - diluted | $ / shares $ 0.51 $ 0.64
Incentive Distribution, Distribution Split Marginal Percentage 50.00%  
Incentive Distribution, Minimum Distribution Level | $ / shares 0.3881  
managing member or general partner, subsequent distribution amount forfeited per quarter $ 12.5  
Net Income (Loss) Attributable To Predecessors 0.0 $ (7.0)
General Partner    
General Partner Distributions 3.0 2.0
Incentive Distribution, Subsequent Distribution Amount [2] 36.0 30.0
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic [3] (1.0) (7.0)
Participating Securities, Distributed and Undistributed Earnings (Loss), Basic 38.0 25.0
Common    
Special Allocations Of Net Earnings [1] 1.0 0.0
Distribution Made to Limited Partner, Cash Distributions Declared 101.0 76.0
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic (46.0) (16.0)
Participating Securities, Distributed and Undistributed Earnings (Loss), Basic $ 54.0 $ 60.0
[1] Normal allocations according to percentage interests are made after giving effect, if any, to priority income allocations in an amount equal to incentive cash distributions fully allocated to the general partner and any special allocations. The adjustment reflects the special allocation to common units held by TLGP for the interest incurred in connection with borrowings on the Revolving Credit Facility in lieu of using all cash on hand to fund the North Dakota Gathering and Processing Assets acquisition during the three months ended March 31, 2017.
[2] IDRs entitle the general partner to receive increasing percentages, up to 50%, of quarterly distributions in excess of $0.3881 per unit per quarter. The amount above reflects earnings distributed to our general partner net of $12.5 million of IDRs waived by TLGP for the three months ended March 31, 2017. See Note 12 of our Annual Report on Form 10-K for the year ended December 31, 2016 for further discussion related to IDRs.
[3] We have revised the historical allocation of general partner earnings to include the Predecessors’ losses of $7 million for the three months ended March 31, 2016. There were no Predecessor losses for the three months ended March 31, 2017.