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Fair Value Measurements - Assets measured (Details) - USD ($)
$ in Millions
Jun. 04, 2015
Aug. 28, 2014
Certificates of deposit [Member] | Level 2 [Member] | Other Noncurrent Assets [Member]    
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]    
Restricted cash $ 28 $ 27