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Operating leases - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 29, 2024 | Mar. 30, 2024 | Jul. 01, 2023 | Jun. 29, 2024 | Jul. 01, 2023 | Dec. 30, 2023
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Lease, cost | $ 4 |  | $ 0 | $ 7 | $ 0 |
Operating lease, liability | 69 |  |  | 69 |  |
Operating lease, liability, current | 13 |  |  | 13 |  | $ 6
Operating lease obligations | 56 |  |  | 56 |  | $ 12
Distribution Center One |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Right-of-use assets obtained in exchange for operating lease liabilities |  | $ 34 |  |  |  |
Operating lease, liability |  | 34 |  |  |  |
Operating lease, liability, current |  | 3 |  |  |  |
Operating lease obligations |  | $ 31 |  |  |  |
Distribution Center Two |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |
Right-of-use assets obtained in exchange for operating lease liabilities | 14 |  |  |  |  |
Operating lease, liability | 14 |  |  | 14 |  |
Operating lease, liability, current | 2 |  |  | 2 |  |
Operating lease obligations | $ 12 |  |  | $ 12 |  |

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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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