Income Taxes - Schedule of Significant Components of Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 30, 2016
Components of Deferred Tax Assets [Abstract]
Pension Plans	$ 41	$ 125
Other Employee Benefit Plans	182	272
Other	657	225
Total	880	622
Components of Deferred Tax Liabilities [Abstract]
Accelerated Depreciation	6,576	9,925
Other	722	293
Total	7,298	10,218
Net Deferred Income Tax Liabilities	$ 6,418	$ 9,596