Long-term Debt Schedule of Fiscal Year 2020 Debt Issuances (Details) - USD ($)
$ in Millions |
|
3 Months Ended |
Apr. 23, 2019 |
Apr. 30, 2019 |
Apr. 30, 2018 |
| Schedule of Fiscal Year 2020 Debt Issuances [Line Items] |
|
|
|
| Proceeds from issuance of long-term debt |
|
$ 3,978
|
$ 0
|
| 2.850% Debt Issuance, Due 2024 [Domain] | Unsecured Debt [Member] |
|
|
|
| Schedule of Fiscal Year 2020 Debt Issuances [Line Items] |
|
|
|
| Debt instrument, principal amount |
$ 1,500
|
|
|
| Debt instrument, interest rate |
2.85%
|
|
|
| Proceeds from issuance of long-term debt |
$ 1,493
|
|
|
| 3.050% Debt Issuance, Due 2026 [Domain] | Unsecured Debt [Member] |
|
|
|
| Schedule of Fiscal Year 2020 Debt Issuances [Line Items] |
|
|
|
| Debt instrument, principal amount |
$ 1,250
|
|
|
| Debt instrument, interest rate |
3.05%
|
|
|
| Proceeds from issuance of long-term debt |
$ 1,242
|
|
|
| 3.250% Debt Issuance, Due 2029 [Domain] | Unsecured Debt [Member] |
|
|
|
| Schedule of Fiscal Year 2020 Debt Issuances [Line Items] |
|
|
|
| Debt instrument, principal amount |
$ 1,250
|
|
|
| Debt instrument, interest rate |
3.25%
|
|
|
| Proceeds from issuance of long-term debt |
$ 1,243
|
|
|