Other Comprehensive Income (Loss) (Details) $ in Millions	6 Months Ended
	Jun. 24, 2016 USD ($)
Pension and Other Post-Employment Benefits
Other Comprehensive Income (Loss)
Beginning balance	$ (601)
Loss Before Reclassifications	0
Amounts Reclassified to Net Earnings	25
Tax Expense	(9)
Total Other Comprehensive Income (Loss)	16
Ending balance	(585)
Other
Other Comprehensive Income (Loss)
Beginning balance	(64)
Loss Before Reclassifications	(1)
Amounts Reclassified to Net Earnings	3
Tax Expense	(2)
Total Other Comprehensive Income (Loss)	0
Ending balance	(64)
Accumulated Other Comprehensive Income (Loss)
Other Comprehensive Income (Loss)
Beginning balance	(665)
Loss Before Reclassifications	(1)
Amounts Reclassified to Net Earnings	28
Tax Expense	(11)
Total Other Comprehensive Income (Loss)	16
Ending balance	$ (649)