Investments - Narrative (Details) € / shares in Units, shares in Millions, $ in Millions					3 Months Ended								9 Months Ended
	Jul. 13, 2023 USD ($) shares	Jun. 08, 2023 USD ($) shares	Apr. 03, 2023 shares	Mar. 02, 2023 shares	Dec. 31, 2024 USD ($) shares	Dec. 31, 2024 EUR (€) € / shares shares	Sep. 30, 2024 USD ($) director	Sep. 30, 2023 USD ($) shares	Sep. 30, 2023 EUR (€) shares	Jun. 30, 2023 USD ($)	Jun. 30, 2023 EUR (€)	Mar. 31, 2023 USD ($)	Sep. 30, 2024 USD ($) director	Sep. 30, 2024 EUR (€)	Sep. 30, 2023 USD ($)	Mar. 28, 2024 € / shares	Dec. 31, 2023 USD ($)	Sep. 29, 2023 € / shares	Jun. 07, 2023	Apr. 02, 2023	Mar. 30, 2023 shares	Mar. 01, 2023	Dec. 31, 2021 EUR (€) € / shares	Sep. 20, 2021 EUR (€)
Schedule of Investments [Line Items]
Gain (loss) on sale of equity method investment													$ (665)	€ (612,000,000)
Equity method investments							$ 2,576						2,576				$ 3,242
Equity earnings							54	$ 10					133		$ 116
Cash dividends received from equity method investments							33	34					$ 115		136
Other than temporary impairment							$ 0	0							0
Exchangeable bonds issued								0							$ 0
Euro-Denominated 0.000% Notes Due September 2024 | Exchangeable Notes
Schedule of Investments [Line Items]
Share price (in EUR per share) | € / shares																							€ 35.40
Exchangeable bonds issued | €																							€ 300,000,000	€ 300,000,000
KDP
Schedule of Investments [Line Items]
Equity securities investment, significant influence over investee, threshold ownership percentage												5.00%
Number of shares sold (in shares) | shares	23.0	23.0		30.0
Cash proceeds	$ 704	$ 708										$ 1,000
Equity investment, decrease in ownership percentage		1.60%		2.10%
Equity securities, measured at fair value, ownership percentage		1.60%		3.20%															3.20%			5.30%
Gain (loss) on sale of equity method investment												493
Gain on sale of equity method investment, after-tax												$ 368
JDEP
Schedule of Investments [Line Items]
Number of shares sold (in shares) | shares			7.7
Cash proceeds								$ 62	€ 57,000,000	$ 217	€ 198,000,000
Equity investment, decrease in ownership percentage			1.60%					0.40%	0.40%
Equity securities, measured at fair value, ownership percentage			18.10%					17.70%		18.10%	18.10%				17.70%					19.70%
Gain (loss) on sale of equity method investment								$ (4)	€ (3,000,000)	$ (19)	€ (18,000,000)
Equity method investment, ownership percentage							17.60%						17.60%
Number of directors | director							2						2
Fair value of equity method investment							$ 1,800						$ 1,800
Share price (in EUR per share) | € / shares																€ 19.46
JDEP | Forecast
Schedule of Investments [Line Items]
Number of shares sold (in shares) | shares					85.9	85.9
Cash proceeds					$ 2,400	€ 2,200,000,000
Stock sale price (in euros per share) | € / shares						€ 25.10
JDEP | Equity method investment contracts
Schedule of Investments [Line Items]
Number of shares sold (in shares) | shares								2.2	2.2
Equivalent shares for issued options (in shares) | shares																					7.7
JDEP | Minimum | Equity method investment contracts
Schedule of Investments [Line Items]
Option strike price (in euros per share) | € / shares																		€ 26.10
JDEP | Maximum | Equity method investment contracts
Schedule of Investments [Line Items]
Option strike price (in euros per share) | € / shares																		€ 28.71
Dong Suh Foods Corporation
Schedule of Investments [Line Items]
Equity method investment, ownership percentage							50.00%						50.00%
Dong Suh Oil & Fats Co. Ltd.
Schedule of Investments [Line Items]
Equity method investment, ownership percentage							49.00%						49.00%