Derivative Financial Instruments - Outstanding Foreign Currency Forward Contracts that were Entered into to Hedge Forecasted Cash Flows (Details) - Mar. 27, 2020 € in Millions, ₩ in Millions, ¥ in Millions, £ in Millions, $ in Millions	EUR (€) t bbl	GBP (£) t bbl	JPY (¥) t bbl	KRW (₩) t bbl	CLP ($) t bbl
Fuel Hedges, 0.5% US Gulf Coast [Member]
Derivative [Line Items]
Nonmonetary Notional Amount of Price Risk Cash Flow Hedge Derivatives3 | bbl	298,438	298,438	298,438	298,438	298,438
Foreign exchange contracts
Derivative [Line Items]
Notional amount	€ 183.6	£ 25.3	¥ 4,976.0	₩ 18,535.0	$ 2,915.7
Fuel Hedges, 3% US Gulf Coast [Member]
Derivative [Line Items]
Nonmonetary Notional Amount of Price Risk Cash Flow Hedge Derivatives3	95,413	95,413	95,413	95,413	95,413
Fuel Hedges, 0.5% Singapore [Member]
Derivative [Line Items]
Nonmonetary Notional Amount of Price Risk Cash Flow Hedge Derivatives3	48,087	48,087	48,087	48,087	48,087