v2.4.0.8
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