Income Taxes Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	4 Months Ended	8 Months Ended
	Sep. 08, 2018	Dec. 30, 2017	Sep. 08, 2018	Sep. 09, 2017
Income Tax Disclosure [Abstract]
Federal Audit Settlement	$ 364		$ 678
Federal Audit Settlement, Net of tax, Per share amount	$ 0.26		$ 0.48
Federal Statutory Tax Rate, Pre TCJ Act		35.00%
Federal Statutory Tax Rate, Post TCJ Act	21.00%		21.00%
Provisional net tax expense related to the TCJ Act			$ 854	$ 0
Transition tax		$ 2,500	2,500
Additional Transition Tax	$ 76		$ 854
Additional Transition Tax, Net of tax, Per share amount	$ 0.05		$ 0.60