Income Taxes (Income Taxes) (Details) $ in Millions	12 Months Ended
	Dec. 29, 2018 USD ($)	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 29, 2018 USD ($)	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Income Tax Contingency [Line Items]
Mandatory OneTime Repatriation TCJ ACT	$ 4,000
Federal Statutory Tax Rate, Pre TCJ Act				35.00%
Income before income taxes in U.S	3,864	$ 3,452	$ 2,630
Income before income taxes in Foreign	5,325	6,150	5,923
Income before income taxes	9,189	9,602	8,553
Provision for income taxes
Current: U.S. Federal	437	4,925	1,219
Current: Foreign	378	724	824
Current: State	63	136	77
Provision for income taxes, Current total	878	5,785	2,120
Deferred: U.S. Federal	140	(1,159)	109
Deferred: Foreign	(4,379)	(9)	(33)
Deferred: State	(9)	77	(22)
Provision for income taxes, Deferred total	(4,248)	(1,091)	54
Provision for income taxes	$ (3,370)	$ 4,694	$ 2,174
U.S. Federal statutory tax rate
U.S. Federal statutory tax rate	21.00%	35.00%	35.00%
State income tax, net of U.S. Federal tax benefit	0.50%	0.90%	0.40%
Lower taxes on foreign results	(2.20%)	(9.40%)	(8.00%)
Provisional One Time Mandatory Repatriation TCJ Act, Percent	0.10%	41.40%	0.00%
Remeasurement of Deferred Taxes TCJ Act, Percent	(0.40%)	(15.90%)	0.00%
International Reorganization	(0.473)	0.000	0.000
Tax benefits	(7.80%)	0.00%	0.00%
Other, net	(0.60%)	(3.10%)	(2.00%)
Annual tax rate	(36.70%)	48.90%	25.40%
Deferred tax liabilities
Debt guarantee of wholly-owned subsidiary				$ 578	$ 578
Property, plant and equipment				1,303	1,397
Intangible assets other than nondeductible goodwill				0	3,169
Deferred tax liability, recapture of NOL				414	0
Other				71	50
Gross deferred tax liabilities				2,366	5,194
Deferred tax assets
Net carryforwards				4,353	1,400
Deferred Tax Assets, Goodwill and Intangible Assets				985	0
Share-based compensation				106	107
Retiree medical benefits				167	198
Other employee-related benefits				303	338
Pension benefits				221	22
Deductible state tax and interest benefits				110	157
Other				739	893
Gross deferred tax assets				6,984	3,115
Valuation allowances	$ (1,163)	$ (1,110)	$ (1,136)	(3,753)	(1,163)	$ (1,110)
Deferred tax assets, net				3,231	1,952
Net deferred tax (assets)/liabilities				(865)	3,242
Valuation Allowance [Abstract]
Balance, beginning of year	(1,163)	(1,110)	(1,136)
Provision				$ 2,639	$ 33	$ 13
Other (deductions)/additions	(49)	20	(39)
Balance, end of year	$ (3,753)	$ (1,163)	$ (1,110)