Acquisitions, West Africa Investments, Goodwill and Other Intangible Assets - Intangible Assets Not Subject to Amortization (Details) $ in Millions	6 Months Ended
	Jun. 29, 2019 USD ($)
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	$ 2,840
Held for sale	(765)
Currency translation adjustment	2
Intangible assets not subject to amortization, ending balance	2,077
North America
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	1,985
Held for sale	(765)
Currency translation adjustment	0
Intangible assets not subject to amortization, ending balance	1,220
Europe
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	401
Held for sale	0
Currency translation adjustment	(2)
Intangible assets not subject to amortization, ending balance	399
Latin America
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	73
Held for sale	0
Currency translation adjustment	1
Intangible assets not subject to amortization, ending balance	74
AMEA
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	381
Held for sale	0
Currency translation adjustment	3
Intangible assets not subject to amortization, ending balance	$ 384