Transactions With Affiliates (Tables)
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3 Months Ended |
Mar. 31, 2016 |
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| Related Party Transactions [Abstract] |
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| Schedule of Transactions With Affiliates |
Statement of Operations | | | | | | | | | | Three Months Ended
March 31, | (in millions) | 2016 | | 2015 | Transportation revenues | $ | — |
| | $ | 28.7 |
| Storage revenues | — |
| | 13.3 |
| Other revenues | — |
| | 0.1 |
| Operation and maintenance expense | 42.4 |
| | 36.1 |
| Interest expense | 7.2 |
| | 11.4 |
| Interest income | 0.1 |
| | 1.0 |
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Balance Sheet | | | | | | | | | (in millions) | March 31,
2016 | | December 31, 2015 | Accounts receivable | $ | 122.6 |
| | $ | 149.4 |
| Short-term borrowings | 348.8 |
| | 42.1 |
| Accounts payable | 22.6 |
| | 86.3 |
| Long-term debt | 630.9 |
| | 630.9 |
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| Schedule of Related Party Transactions, Long-Term Debt |
| | | | | | | | | | | | | | | Origination Date | | Interest Rate | | Maturity Date | | March 31, 2016 | | December 31, 2015 | (in millions) | | | | | |
| | | December 9, 2013 | | 4.70 | % | | December 31, 2020 | | $ | 630.9 |
| | $ | 630.9 |
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