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Earnings Per Share (Narrative) (Detail) (Stock Option [Member])
In Millions, unless otherwise specified
3 Months Ended
Mar. 29, 2015
Mar. 30, 2014
Stock Option [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Shares considered anti-dilutive and excluded from computation 0.7us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_StockOptionMember
0.6us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_StockOptionMember