Acquisitions, West Africa Investments, Goodwill and Other Intangible Assets - Intangible Assets Subject to Amortization (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	$ 201
Additions	425
Purchase price allocation adjustment	2
Currency translation adjustment	(19)
Gross carrying amount, ending balance	609
Accumulated amortization, beginning balance	67
Amortization	16	$ 8
Currency translation adjustment	(2)
Accumulated amortization, ending balance	81
Intangible assets subject to amortization net, beginning balance	134
Additions	425
Purchase price allocation adjustment	2
Amortization	(16)
Currency translation adjustment	(17)
Intangible assets subject to amortization net, ending balance	528
Currently estimated aggregate annual amortization expense for full-year	23
U.S. Snacks
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	42
Additions	0
Purchase price allocation adjustment	0
Currency translation adjustment	0
Gross carrying amount, ending balance	42
Accumulated amortization, beginning balance	22
Amortization	2
Currency translation adjustment	0
Accumulated amortization, ending balance	24
Intangible assets subject to amortization net, beginning balance	20
Additions	0
Purchase price allocation adjustment	0
Amortization	(2)
Currency translation adjustment	0
Intangible assets subject to amortization net, ending balance	18
U.S. Morning Foods
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	8
Additions	0
Purchase price allocation adjustment	0
Currency translation adjustment	0
Gross carrying amount, ending balance	8
Accumulated amortization, beginning balance	8
Amortization	0
Currency translation adjustment	0
Accumulated amortization, ending balance	8
Intangible assets subject to amortization net, beginning balance	0
Additions	0
Purchase price allocation adjustment	0
Amortization	0
Currency translation adjustment	0
Intangible assets subject to amortization net, ending balance	0
U.S. Specialty Channels
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	0
Additions	0
Purchase price allocation adjustment	0
Currency translation adjustment	0
Gross carrying amount, ending balance	0
Accumulated amortization, beginning balance	0
Amortization	0
Currency translation adjustment	0
Accumulated amortization, ending balance	0
Intangible assets subject to amortization net, beginning balance	0
Additions	0
Purchase price allocation adjustment	0
Amortization	0
Currency translation adjustment	0
Intangible assets subject to amortization net, ending balance	0
North America Other
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	22
Additions	0
Purchase price allocation adjustment	2
Currency translation adjustment	0
Gross carrying amount, ending balance	24
Accumulated amortization, beginning balance	5
Amortization	1
Currency translation adjustment	0
Accumulated amortization, ending balance	6
Intangible assets subject to amortization net, beginning balance	17
Additions	0
Purchase price allocation adjustment	2
Amortization	(1)
Currency translation adjustment	0
Intangible assets subject to amortization net, ending balance	18
Europe
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	45
Additions	0
Purchase price allocation adjustment	0
Currency translation adjustment	(1)
Gross carrying amount, ending balance	44
Accumulated amortization, beginning balance	18
Amortization	2
Currency translation adjustment	0
Accumulated amortization, ending balance	20
Intangible assets subject to amortization net, beginning balance	27
Additions	0
Purchase price allocation adjustment	0
Amortization	(2)
Currency translation adjustment	(1)
Intangible assets subject to amortization net, ending balance	24
Latin America
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	74
Additions	0
Purchase price allocation adjustment	0
Currency translation adjustment	(13)
Gross carrying amount, ending balance	61
Accumulated amortization, beginning balance	10
Amortization	3
Currency translation adjustment	(2)
Accumulated amortization, ending balance	11
Intangible assets subject to amortization net, beginning balance	64
Additions	0
Purchase price allocation adjustment	0
Amortization	(3)
Currency translation adjustment	(11)
Intangible assets subject to amortization net, ending balance	50
Asia Pacific
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount, beginning balance	10
Additions	425
Purchase price allocation adjustment	0
Currency translation adjustment	(5)
Gross carrying amount, ending balance	430
Accumulated amortization, beginning balance	4
Amortization	8
Currency translation adjustment	0
Accumulated amortization, ending balance	12
Intangible assets subject to amortization net, beginning balance	6
Additions	425
Purchase price allocation adjustment	0
Amortization	(8)
Currency translation adjustment	(5)
Intangible assets subject to amortization net, ending balance	$ 418