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Variable Interest Entities (“VIE”) - Narrative (Details) - USD ($)	Jul. 23, 2023	Dec. 28, 2024
Variable Interest Entity [Line Items]
Symbotic's Maximum Exposure to Loss		$ 1,633,200,000
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Symbotic's Maximum Exposure to Loss		1,635,200,000
Investments in unconsolidated VIE		$ 85,946,000
GreenBox \| Symbotic Holdings
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage	35.00%
GreenBox \| Sunlight
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage	65.00%