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Warranties (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Changes in accrued product warranty costs    
Beginning balance $ 6.6 $ 6.5
Settlements made (in cash or in kind) (1.4) (1.6)
Current year accrual 1.5 2.0
Effect of foreign currency translation 0 0
Ending balance $ 6.7 $ 6.9