Equity method investments - Unaudited financial information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 25, 2022	Dec. 31, 2021	Dec. 25, 2021
Schedule Of Equity Method Investments [Line Items]
Assets	$ 909,860		$ 909,860			$ 958,784
Sales	76,180	$ 69,114	146,990	$ 133,713
The Kraft Heinz Company [Member]
Schedule Of Equity Method Investments [Line Items]
Assets					$ 91,676		$ 93,394
Liabilities					$ 42,674		$ 43,942
Sales	6,554	6,615	12,599	13,009
Net earnings (loss) attributable to Kraft Heinz common shareholders	$ 265	$ (27)	$ 1,041	$ 536