Supplemental Financial Statement Data - Consolidated Balance Sheet (Unaudited) (Details) - USD ($) $ in Millions	Mar. 28, 2020	Dec. 28, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Trade receivables	$ 1,473	$ 1,315
Allowance for doubtful accounts	(22)	(10)
Redundable income taxes	46	56
Other receivables	251	215
Accounts receivable, net	1,748	1,576
Raw materials and supplies	312	303
Finished goods and materials in process	877	923
Inventories	1,189	1,226
Property	8,825	9,051
Accumulated depreciation	(5,385)	(5,439)
Property, net	3,440	3,612
Pension	251	241
Deferred income taxes	222	231
Other	764	667
Other assets	1,237	1,139
Accrued income taxes	99	42
Accrued salaries and wages	185	290
Other	915	577
Other current liabilities	1,199	909
Income taxes payable	82	81
Nonpension postretirement benefits	31	33
Other	402	429
Other liabilities	$ 515	$ 543