v2.4.0.6
Borrowing Arrangements (Details 6) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Borrowing Arrangements  
Unamortized fair value adjustment related to long-term debt $ 144.9
Estimated aggregate amortization of fair value adjustment related to long-term debt (reduction of interest expense) for each of the next five years:  
2012 54.0
2013 29.3
2014 23.3
2015 12.5
2016 $ 6.9