v2.4.0.8
Summarized Financial Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Equity Method Investment Summarized Financial Information    
Revenue $ 23.6 $ 21.2
Operating Income 12.1 9.8
Net income $ 9.2 $ 8.6