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Investment in Unconsolidated Affiliates Summarized Income Statement of Equity Method Investment (Tables) | 2 Months Ended
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Jun. 30, 2013
Summarized Financial Information of Equity Method Investment [Line Items] |
Summarized Income Statement Financial Information, Equity Method Investment [Table Text Block] |
| Three Months Ended | Five Months Ended
Income Statement | September 30, 2013 | September 30, 2013
| (In millions)
Operating revenues | $ | 796.4 |  | $ | 1,298.4 |
Gross margin | 337.1 |  | 544.5 |
Operating income | 132.0 |  | 206.7 |
Net income | 123.3 |  | 188.4 |

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- Definition Summarized Income Statement Financial Information, Equity Method Investment [Table Text Block] + References No definition available. + Details
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