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Warranty Obligations (Schedule Of Warranty Cost And Accrual Information) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Warranty Obligations    
Balance at beginning of year $ 18.0us-gaap_ProductWarrantyAccrual $ 15.4us-gaap_ProductWarrantyAccrual
Expenses for new warranties 30.5us-gaap_ProductWarrantyAccrualWarrantiesIssued 27.0us-gaap_ProductWarrantyAccrualWarrantiesIssued
Adjustments to existing accruals 0.7us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease 1.5us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease
Claims paid (26.2)us-gaap_ProductWarrantyAccrualPayments (25.9)us-gaap_ProductWarrantyAccrualPayments
Balance at end of year $ 23.0us-gaap_ProductWarrantyAccrual $ 18.0us-gaap_ProductWarrantyAccrual