Statements of Consolidated and Combined Comprehensive Income (Parenthetical) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
|
| Predecessor [Member] | |||
| Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax | $ 0.1 | $ (0.1) | $ (0.3) |