Acquisitions, West Africa Investments, Goodwill and Other Intangible Assets Schedule of Acquired Assets and Assumed Liabilities (Details) - USD ($) $ in Millions	Dec. 29, 2018	May 02, 2018	Dec. 30, 2017	Oct. 27, 2017	Dec. 31, 2016	Dec. 01, 2016
Business Acquisition [Line Items]
Goodwill	$ 6,050		$ 5,504		$ 5,166
Multipro
Business Acquisition [Line Items]
Current assets		$ 118
Property		41
Goodwill	616	616
Intangible assets subject to amortization, primarily customer relationships		425
Intangible assets not subject to amortization, primarily distribution rights or indefinite lived brands		373
Deferred tax liabilities noncurrent	2	(254)
Other liabilities		(150)
Non-controlling interests		(552)
Net assets acquired (liabilities assumed), net		$ 617
RXBAR
Business Acquisition [Line Items]
Current assets				$ 42
Goodwill	(2)			373
Intangible assets not subject to amortization, primarily distribution rights or indefinite lived brands				203
Intangible assets and other	$ 2
Current liabilities				(23)
Net assets acquired (liabilities assumed), net				$ 595
Ritmo Investimentos
Business Acquisition [Line Items]
Current assets						$ 44
Property						72
Goodwill						165
Intangible assets and other						148
Current liabilities						(48)
Other non current liabilities, primarily deferred taxes						(6)
Net assets acquired (liabilities assumed), net						$ 375