Goodwill and Intangible Assets Goodwill - Additional Information (Details) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 28, 2019 USD ($)	Mar. 30, 2019 USD ($) goodwill_reporting_unit	Sep. 29, 2018 USD ($)	Jun. 30, 2018 USD ($)	Sep. 28, 2019 USD ($) goodwill_reporting_unit	Sep. 29, 2018 USD ($)	Mar. 31, 2019 USD ($)	Dec. 29, 2018 USD ($)
Goodwill [Line Items]
Number of reporting units | goodwill_reporting_unit		19			19
Goodwill	$ 35,826		$ 44,339		$ 35,826	$ 44,339		$ 36,503
Impairment losses	0		$ 0		744	$ 133
Goodwill, impaired, accumulated impairment loss	(7,800)				(7,800)
EMEA
Goodwill [Line Items]
Goodwill	2,679				2,679			3,074
Impairment losses					292
Rest of World
Goodwill [Line Items]
Goodwill	1,035				1,035			1,394
Impairment losses					334
United States
Goodwill [Line Items]
Goodwill	29,601				29,601			$ 29,597
Impairment losses					$ 118
Reporting Unit, Goodwill Balance Held
Goodwill [Line Items]
Number of reporting units | goodwill_reporting_unit					12
Reporting Unit, Fair Value Below Carrying Amount
Goodwill [Line Items]
Number of reporting units | goodwill_reporting_unit		3
Impairment losses		$ 620
EMEA East | EMEA
Goodwill [Line Items]
Goodwill							$ 144
Impairment losses		286
BRAZIL | Rest of World
Goodwill [Line Items]
Impairment losses		205
Latin America Exports | Rest of World
Goodwill [Line Items]
Goodwill							297
Impairment losses		$ 129
U.S. Refrigerated | United States
Goodwill [Line Items]
Goodwill							$ 7,000
Decrease in market capitalization		25.00%
Impairment losses	$ 118
Australia and New Zealand
Goodwill [Line Items]
Impairment losses				$ 133
10% or Less
Goodwill [Line Items]
Number of reporting units | goodwill_reporting_unit		6
10% or Less | U.S. Grocery
Goodwill [Line Items]
Goodwill		$ 18,600
10% or Less | U.S. Foodservice
Goodwill [Line Items]
Goodwill		3,900
10% or Less | Canada Retail
Goodwill [Line Items]
Goodwill		2,100
10% or Less | Australia and New Zealand
Goodwill [Line Items]
Goodwill		370
10% or Less | Canada Food Service
Goodwill [Line Items]
Goodwill		368
10% or Less | Northeast Asia
Goodwill [Line Items]
Goodwill		$ 83
10 to 20% | Continental Europe
Goodwill [Line Items]
Number of reporting units | goodwill_reporting_unit		1
Goodwill		$ 593
20 to 50%
Goodwill [Line Items]
Goodwill		$ 2,400
In Excess of 50%
Goodwill [Line Items]
Number of reporting units | goodwill_reporting_unit		0