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Commitments, Contingencies and Related Parties Maximum Loss Exposure (Detail) - Dec. 29, 2017 - Equity Method Investee $ in Millions, ¥ in Billions | JPY (¥) | USD ($)
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Guarantor Obligations [Line Items] |  |
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount |  | $ 3,054
Notes Receivable |  |
Guarantor Obligations [Line Items] |  |
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount |  | 1,267
Equity Method Investments |  |
Guarantor Obligations [Line Items] |  |
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount |  | 578
Off Balance Sheet Guarantee |  |
Guarantor Obligations [Line Items] |  |
Operating lease guarantees | ¥ 106 | 941
Prepaid Expenses and Other Current Assets |  |
Guarantor Obligations [Line Items] |  |
Inventory and prepayments |  | $ 268

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