Business Acquisitions Business Acquisitions Other Information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Sep. 13, 2019	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018	Oct. 11, 2019	Dec. 29, 2018
Business Acquisition [Line Items]
Goodwill		$ 4,728		$ 4,728			$ 3,967
Liabilities of discontinued operations		27		27			$ 0
Senior secured term loan facility | Term Loan Facility B
Business Acquisition [Line Items]
Long-term Debt, Gross		1,500		1,500
Food Group
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		145		145
Payments for acquisition	$ 1,800
Net sales of Food Group since acquisition		132
Net income of Food Group since acquisition		1
Acquisition related costs		17	$ 10	35	$ 10
Inventories		166		166
Assets of discontinued operations		142		142
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other		7		7
Property and equipment		200		200
Goodwill		761		761
Other intangibles		691		691
Other assets		47		47
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable		200		200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other		61		61
Liabilities of discontinued operations		27		27
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities		42		42
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net		$ 1,829		$ 1,829
Subsequent event
Business Acquisition [Line Items]
Proceeds from sale of discontinued operations						$ 94
Proceeds from sale of discontinued operations, adjustment						$ 21