Warranty Costs (Narrative) (Details) (USD $) In Millions	3 Months Ended	6 Months Ended
Jul. 02, 2011	Jul. 02, 2011
Warranty Costs
Incremental accrued warranty costs due to a production flaw	$ 28.0	$ 28.0

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rbc_IncrementalAccruedWarrantyCostsDueToProductionFlaw

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rbc

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