|
Transactions With Affiliates (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
2 Months Ended |
|
|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Mar. 31, 2015
|
Dec. 31, 2014
|
Dec. 05, 2014
|
| Related Party Transaction [Line Items] |
|
|
|
|
|
| Interest Expense, Long-term Debt |
$ 12.2 |
|
|
|
|
| Allowance for Funds Used During Construction, Capitalized Interest |
1.0 |
|
|
|
|
| Short-term Debt, Weighted Average Interest Rate |
1.07% |
|
1.07% |
|
|
| Interest Expense, Short-term Borrowings |
0.2 |
|
|
|
|
| Accounts receivable-affiliated |
833.7 |
|
833.7 |
|
|
| Revolving credit facility |
2,600 |
|
2,600 |
|
|
| Transportation and Storage Services |
|
|
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
|
|
| Accounts receivable-affiliated |
17.5 |
|
17.5 |
|
|
| Predecessor [Member] |
|
|
|
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| Related Party Transaction [Line Items] |
|
|
|
|
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| Interest Expense, Long-term Debt |
|
12.2 |
|
|
|
| Allowance for Funds Used During Construction, Capitalized Interest |
|
1.2 |
|
|
|
| Short-term Debt, Weighted Average Interest Rate |
|
0.67% |
|
|
|
| Interest Expense, Short-term Borrowings |
|
1.1 |
|
|
|
| Accounts receivable-affiliated |
|
|
|
153.8 |
|
| Predecessor [Member] | Transportation and Storage Services |
|
|
|
|
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| Related Party Transaction [Line Items] |
|
|
|
|
|
| Accounts receivable-affiliated |
|
|
|
28.8 |
|
| Columbia OpCo |
|
|
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
|
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| Reimbursement of Preformation Capital |
|
|
500.0 |
|
|
| Money Pool |
|
|
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
|
|
| Accounts receivable-affiliated |
816.2 |
|
816.2 |
|
|
| Revolving credit facility |
750 |
|
750 |
|
|
| Money Pool | Predecessor [Member] |
|
|
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
|
|
| Accounts receivable-affiliated |
|
|
|
125.0 |
|
| Revolving Credit Facility |
|
|
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
|
|
| Revolving credit facility |
$ 1,500 |
|
$ 1,500 |
|
$ 500 |
| Notes Due 2016 [1] |
|
|
|
|
|
| Related Party Transaction [Line Items] |
|
|
|
|
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| Debt Instrument, Maturity Date |
Dec. 31, 2016 |
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|
|
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| London Interbank Offered Rate (LIBOR) |
|
|
|
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| Related Party Transaction [Line Items] |
|
|
|
|
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| Basis Spread on Variable Rate |
1.00% |
|
|
|
|
| London Interbank Offered Rate (LIBOR) | Notes Due 2016 [1] |
|
|
|
|
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| Related Party Transaction [Line Items] |
|
|
|
|
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| Basis Spread on Variable Rate |
1.50% |
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