Financing Leases (Details) - USD ($) $ in Millions |
Dec. 28, 2019 |
Dec. 29, 2018 |
|---|---|---|
| Debt Instrument [Line Items] | ||
| Borrowings under facility | $ 4,736 | $ 3,457 |
| Obligations under financing leases | Lease agreements | ||
| Debt Instrument [Line Items] | ||
| Borrowings under facility | $ 352 | $ 352 |