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Equity Method Investments - Narrative (Details) € / shares in Units, € in Millions, $ in Millions							3 Months Ended
	Jun. 02, 2020 USD ($) shares	Jun. 02, 2020 EUR (€) shares	Jun. 01, 2020 USD ($) shares	Jun. 01, 2020 EUR (€) shares	May 29, 2020 € / shares shares	Mar. 04, 2020 USD ($) shares	Mar. 31, 2021 USD ($) director	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)
Schedule of Equity Method Investments [Line Items]
Equity method investments							$ 5,916		$ 6,036
Equity method investment net earnings							78	$ 121
Cash dividends received from equity method investments							$ 74	165
JDEP
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	22.90%	22.90%					22.80%
Equity method investment net earnings								$ 121
Number of shares of equity method investment sold (in shares) | shares			9,700,000	9,700,000	82,100,000
Stock sale price (in dollars per share) | € / shares					€ 31.50
Percentage of equity method investment ownership after the settlement			26.50%	26.50%
Gross proceeds from equity method investment transaction			$ 343	€ 304
JDEP | Over-allotment option
Schedule of Equity Method Investments [Line Items]
Number of shares of equity method investment sold (in shares) | shares	1,400,000	1,400,000
Gross proceeds from equity method investment transaction	$ 51	€ 46
KDP
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage							8.30%
Number of shares of equity method investment sold (in shares) | shares						6,800,000
Decrease in equity method investment ownership percentage						0.50%
Pre-tax gain (loss) on sale of equity method investment						$ 71
After-tax gain (loss) on sale of equity method investment						54
Proceeds from sale of equity method investment						$ 185
Number of director positions | director							2
Dong Suh Foods Corporation
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage							50.00%
Dong Suh Oil & Fats Co. Ltd.
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage							49.00%
JDEP and KDP
Schedule of Equity Method Investments [Line Items]
Fair value of ownership of equity method investment							$ 8,300
JDE
Schedule of Equity Method Investments [Line Items]
Percentage of equity method investment exchanged			26.40%	26.40%

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