Commitments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Commitments and Contingencies Disclosure [Abstract]
Operating Leases, Rent Expense	$ 264	$ 282	$ 253
Operating Leases, Future Minimum Payments Due, Next Twelve Months	215
Operating Leases, Future Minimum Payments, Due in Two Years	186
Operating Leases, Future Minimum Payments, Due in Three Years	162
Operating Leases, Future Minimum Payments, Due in Four Years	136
Operating Leases, Future Minimum Payments, Due in Five Years	105
Operating Leases, Future Minimum Payments, Due Thereafter	441
Operating Leases, Future Minimum Payments Due	1,245
Unrecorded Unconditional Purchase Obligation [Line Items]
Unrecorded Unconditional Purchase Obligation	2,700	3,000
Capital Addition Purchase Commitments [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Unrecorded Unconditional Purchase Obligation	$ 12,100	$ 7,500