Statements Of Consolidated and Combined Equity and Partners' Capital (USD $)
In Millions
Total
Limited Partner [Member]
Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss)
Common Units [Member]
Limited Partner [Member]
Subordinated Units [Member]
Limited Partner [Member]
Predecessor [Member]
Predecessor [Member]
Parent [Member]
Beginning Balance at Dec. 31, 2014 $ 4,171.3   $ 0 $ (16.7) $ 0 $ 0 $ 4,171.3 $ 4,188.0
Net Income 42.7   0 0 0 0    
Other Comprehensive Income (Loss), Net of Tax 0.1   0 0.1 0 0   0
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest 42.8              
Contribution of capital from parent 1,217.3   0 0 0 0   1,217.3
Predecessor net tax liabilities not assumed by Columbia OpCo(1) [1] 1,222.2   0 (10.3) 0 0   1,232.5
Contributed/Noncontributed Net Parent Investment Adjustments [2] (7.7)   0 0 0 0   (7.7)
Ending Balance at Feb. 11, 2015 6,645.9   0 (26.9) 0 0   6,672.8
Beginning Balance at Dec. 31, 2014 4,171.3     (16.7)     4,171.3  
Net Income 131.2              
Other Comprehensive Income (Loss), Net of Tax 0.1              
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest 131.4              
Predecessor net tax liabilities not assumed by Columbia OpCo(1) [3]       (10.3)        
Allocation of Accumulated Other Comprehensive Loss To Noncontrolling Interest       22.7        
Ending Balance at Mar. 31, 2015 7,402.9     (4.2)        
Beginning Balance at Feb. 11, 2015 6,645.9   0 (26.9) 0 0   6,672.8
Net Income 88.5   75.2 0 7.1 6.2   0
Other Comprehensive Income (Loss), Net of Tax 0.1   0.1 0 0 0   0
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest 88.6              
Allocation of Net Investment to Unitholders 0   6,185.7 0 0 487.1   (6,672.8)
Allocation of Accumulated Other Comprehensive Loss To Noncontrolling Interest 0   (22.7) 22.7 0 0   0
Net proceeds from IPO 1,168.4 1,168.4 0 0   0   0
Purchase of additional interest in Columbia OpCo(3) [4] 0   424.4 0 (227.1) (197.3)   0
Distribution to the noncontrolling interest in Columbia OpCo (500.0)   (500.0) 0 0 0   0
Ending Balance at Mar. 31, 2015 $ 7,402.9   $ 6,162.7 $ (4.2) $ 948.4 $ 296.0   $ 0
[1] Reflects the non-cash elimination of all historical current and deferred income taxes other than Tennessee state income taxes that continue to be borne by the Partnership post-IPO, as well as associated regulatory assets and liabilities.
[2] Reflects the removal of amounts related to Crossroads Pipeline Company, Columbia Pipeline Group Services Company, Central Kentucky Transmission Company and 1% of the 50% interest in Hardy Storage that were included in the Predecessor but were not contributed to the Partnership, as well as the inclusion of CNS Microwave, which was not part of the Predecessor.
[3] Reflects the non-cash elimination of all historical current and deferred income taxes other than Tennessee state income taxes that will continue to be borne by the Partnership post-IPO.
[4] Represents the purchase of an additional 8.4% limited partner interest in Columbia OpCo, recorded at the historical carrying value of Columbia OpCo’s net assets after giving effect to the $1,168.4 million equity contribution.