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Deferred Revenue and Advances from Customers (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Deferred Revenue and Credits, Current [Abstract]          
Advances from customers $ 21.7   $ 21.7   $ 2.4
Other (income) $ 40.7 $ 10.0 $ 88.3 $ 10.0