Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014
Tax Credit Carryforward [Line Items]
Provisional tax cost	$ 13,000
Provisional toll tax charge	10,100
Deferred tax liability foreign taxes	4,457	$ 4,457
Deferred tax asset offset	1,100	$ 1,100
Remeasurement of deferred tax assets and liabilities	600
U.S. statutory rate		35.00%	35.00%	35.00%
Increase in effective tax rate (as a percent)		73.30%	0.00%	0.00%
Increase in effective tax rate from prior period (as a percent)		76.10%
Other deferred tax assets	755	$ 755	$ 1,135
Unrecognized tax benefits	3,151	3,151	3,041	$ 3,080	$ 2,465
Unrecognized tax benefits, interest on income tax expense		60	7	$ 44
Unrecognized tax benefits, interest on income taxes accrued	436	436	$ 344
State and Local Jurisdiction
Tax Credit Carryforward [Line Items]
Deferred tax liability foreign taxes	$ 100	$ 100
Increase in effective tax rate (as a percent)		0.60%