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Commitments and Contingencies - Future Payments Under Unconditional Purchase Obligations (Details)
$ in Millions
Sep. 28, 2019
USD ($)
Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]  
2020 $ 2,476
2021 2,386
2022 1,859
2023 1,162
2024 218
Thereafter 110
Total $ 8,211