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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Oct. 01, 2016
Income Tax Disclosure [Abstract]      
Effective tax rate for continuing operations 34.90% 35.20%  
Unrecognized tax benefits $ 309   $ 305
Unrecognized tax benefits, reductions that could result from expiration of statutes of limitations $ 8