Business Acquisitions Schedule of Business Acquisitions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Business Acquisition [Line Items]
Goodwill	$ 4,728	$ 3,967
Food Group
Business Acquisition [Line Items]
Accounts receivable	145
Inventories	165
Assets of discontinued operations	133
Other current assets	7
Property and equipment	209
Goodwill	761
Other intangibles	695
Other assets	47
Accounts payable	(200)
Accrued expenses and other current liabilities	(69)
Liabilities of discontinued operations	(19)
Other long-term liabilities, including financing leases	(42)
Cash paid for acquisition	1,832
Indefinite-lived brand names and trade names	39
Customer Relationships
Business Acquisition [Line Items]
Gross carrying amount	789	$ 154
Customer Relationships | Food Group
Business Acquisition [Line Items]
Gross carrying amount	$ 656
Maximum | Customer Relationships
Business Acquisition [Line Items]
Estimated useful lives of intangible assets (in years)	15 years
Maximum | Customer Relationships | Food Group
Business Acquisition [Line Items]
Estimated useful lives of intangible assets (in years)	15 years