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Business combinations and asset acquisitions - Narrative (Details) $ in Millions		3 Months Ended
	Jun. 02, 2025 USD ($) warehouse	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)	Apr. 30, 2025 USD ($)	Apr. 01, 2025 USD ($) warehouse	Dec. 31, 2024 USD ($)
Business Combination [Line Items]
Goodwill			$ 3,505			$ 3,338
Total lease obligations			1,318			1,414
Houston Texas Lease
Business Combination [Line Items]
Total lease obligations				$ 90
Bellingham Cold Storage
Business Combination [Line Items]
Number of warehouses acquired \| warehouse					3
Goodwill			2		$ 0
VersaCold \| Canada Revenue Agency
Business Combination [Line Items]
Tax payments on acquisition of business		$ 11
Business combination, consideration transferred, income taxes incurred			$ (4)			$ (4)
Tyson Foods
Business Combination [Line Items]
Number of warehouses acquired \| warehouse	4
Asset acquisition, consideration transferred	$ 256
Number of assets to be constructed under acquisition agreement \| warehouse	2
Estimated construction costs under acquisition agreement	$ 740