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Organization and Basis of Presentation Revenue Recognition (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2014
Increase Installed Capacity and Adjust Product Mix [Member]
Mar. 31, 2014
Delay of a Major Product Program [Member]
Mar. 31, 2014
Cash [Member]
Increase Installed Capacity and Adjust Product Mix [Member]
Mar. 31, 2014
Cash [Member]
Delay of a Major Product Program [Member]
Mar. 31, 2014
Trade Accounts Receivable [Member]
Increase Installed Capacity and Adjust Product Mix [Member]
Mar. 31, 2014
Trade Accounts Receivable [Member]
Delay of a Major Product Program [Member]
Deferred Revenue Arrangement [Line Items]                
Deferred revenue, additions     $ 34.4 $ 9.3 $ 13.8 $ 5.7 $ 20.6 $ 3.6
Deferred revenue, revenue recognized     0.3          
Deferred revenue, current 22.3 17.0 7.2 1.1        
Deferred revenue, noncurrent $ 106.9 $ 76.4 $ 26.9 $ 8.2