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Net Loss Per Share (Details)
In Millions, unless otherwise specified
12 Months Ended
Dec. 28, 2014
Dec. 29, 2013
Dec. 30, 2012
Earnings Per Share [Abstract]      
Antidilutive securities excluded from computation of earnings per share 7.0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 8.0us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 7.6us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount