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Operating leases - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 29, 2025 | Mar. 30, 2024
Leases [Abstract] |  |
Lease, cost | $ 7 | $ 3
Increase to operating lease assets | 13 |
Increase (decrease) in operating lease liability | 13 |
Increase (decrease) in operating lease liability, current | 5 |
Increase (decrease) in operating lease liability, noncurrent | $ 8 |

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- Definition Increase (Decrease) In Operating Lease Liability, Current + References No definition available. + Details
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- Definition Increase (Decrease) In Operating Lease Liability Noncurrent + References No definition available. + Details
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- Definition Increase (Decrease) In Operating Lease, Right-Of-Use Asset + References No definition available. + Details
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- Definition Amount of increase (decrease) in obligation for operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(1) -SubTopic 20 -Topic 842 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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