|
Earnings and Dividends from Equity Method of Investment (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
|
| Investments in and Advances to Affiliates [Line Items] | ||||
| Income (Loss) from Equity Method Investments | $ 3.1 | $ 4.2 | $ 6.7 | $ 7.3 |
| Dividends received from equity method investments | $ 7.2 | $ 7.4 | ||