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Postretirement Benefit Plans - Additional Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Sep. 29, 2017
Sep. 30, 2016
Jun. 30, 2017
Dec. 30, 2016
U.S. | Qualified Defined Pension Plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined benefit plan, contributions by employer during period $ 0 $ 64,000,000 $ 400,000,000  
Defined benefit plans, estimated future employer contributions in current fiscal year 0      
U.S. | U.S. SRP        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Value of defined benefit pension plan assets     4,400,000,000  
Projected benefit obligation of defined pension plan     $ 5,600,000,000  
Cash balance percentage to replace frozen benefits under defined pension plan       1.00%
Non-U.S | Qualified Defined Pension Plan        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Defined benefit plans, estimated future employer contributions in current fiscal year $ 1,000,000