|
Supplemental Cash Flow Information - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Supplemental Cash Flow Information [Line Items] | |||
| Cash interest paid including realized losses on the interest rate swap agreements | $ 18.9 | $ 29.3 | $ 79.1 |
|
Dropdown Predecessor [Member]
|
|||
| Supplemental Cash Flow Information [Line Items] | |||
| Drawdowns (Repayments) | 108.7 | (82.3) | |
|
Interest rate swaps [Member] | Dropdown Predecessor [Member]
|
|||
| Supplemental Cash Flow Information [Line Items] | |||
| Realized losses on interest rate swap agreements | $ 1.8 | $ 32.9 | |