|
Transactions With Affiliates (Schedule of Affiliated Transactions) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Dec. 31, 2014
|
|
| Related Party Transaction [Line Items] | |||
| Transportation revenues-affiliated | $ 28.7 | ||
| Storage revenues | 13.3 | ||
| Other revenues | 0.1 | ||
| Operation and maintenance-affiliated | 36.1 | ||
| Interest expense | 11.4 | ||
| Interest income | 1.0 | ||
| Accounts receivable | 833.7 | ||
| Long-term Debt and Capital Lease Obligations, Current | 0 | ||
| Short-term Debt | 7.0 | ||
| Accounts payable | 41.0 | ||
| Long-term debt | 630.9 | ||
| Predecessor [Member] | |||
| Related Party Transaction [Line Items] | |||
| Transportation revenues-affiliated | 28.6 | ||
| Storage revenues | 13.7 | ||
| Other revenues | 0.1 | ||
| Operation and maintenance-affiliated | 28.3 | ||
| Interest expense | 12.1 | ||
| Interest income | 0.1 | ||
| Accounts receivable | 153.8 | ||
| Long-term Debt and Capital Lease Obligations, Current | 115.9 | ||
| Short-term Debt | 247.3 | ||
| Accounts payable | 49.9 | ||
| Long-term debt | $ 1,472.8 | ||