Intangible assets and goodwill - Narrative (Details) - USD ($) $ in Billions	12 Months Ended
	Dec. 29, 2024	Dec. 31, 2023	Jan. 01, 2023	Dec. 22, 2022
Finite-Lived Intangible Assets [Line Items]
Intangible assets useful life				14 years
Amortization expense of amortizable intangible assets	$ 4.5	$ 4.5	$ 3.9
Patents And Trademarks
Finite-Lived Intangible Assets [Line Items]
Intangible assets useful life	12 years
Customer relationships and other intangible assets
Finite-Lived Intangible Assets [Line Items]
Intangible assets useful life	18 years