Other Comprehensive Income (Loss) - Changes in AOCI balance by Component (Details) $ in Millions	9 Months Ended
	Sep. 23, 2016 USD ($)
Pension and Other Post-Employment Benefits
Other Comprehensive Income (Loss)
Beginning balance	$ (601)
Amounts Reclassified to Net Earnings	38
Tax Expense	(14)
Total Other Comprehensive Income (Loss)	24
Ending balance	(577)
Other
Other Comprehensive Income (Loss)
Beginning balance	(64)
Amounts Reclassified to Net Earnings	4
Tax Expense	(2)
Total Other Comprehensive Income (Loss)	2
Ending balance	(62)
Accumulated Other Comprehensive Income (Loss)
Other Comprehensive Income (Loss)
Beginning balance	(665)
Amounts Reclassified to Net Earnings	42
Tax Expense	(16)
Total Other Comprehensive Income (Loss)	26
Ending balance	$ (639)