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v3.20.2

Long-Term Debt and Credit Lines - Exclusive of Current Installments - Additional Information (Details) - Senior Notes - USD ($) $ in Thousands | 9 Months Ended |  |  |
--- | --- | --- | --- | ---
Oct. 31, 2020 | Apr. 01, 2020 | Feb. 01, 2020 | Nov. 02, 2019
2.75% Senior Unsecured Notes Due June 15, 2021 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate | 2.75% |  |  |
Maturity date | Jun. 15, 2021 |  |  |
Effective interest rate | 2.76% |  |  |
Unamortized debt discount | $ 44 |  | $ 100 | $ 119
2.50% Senior Unsecured Notes Due May 15, 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate | 2.50% |  |  |
Maturity date | May 15, 2023 |  |  |
Effective interest rate | 2.51% |  |  |
Unamortized debt discount | $ 111 |  | 145 | 156
3.50% Senior Unsecured Notes Due April 15, 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate | 3.50% | 3.50% |  |
Maturity date | Apr. 15, 2025 |  |  |
Effective interest rate | 3.58% |  |  |
Unamortized debt discount | $ 4,461 |  |  |
2.25% Senior Unsecured Notes Due September 15, 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate | 2.25% |  |  |
Maturity date | Sep. 15, 2026 |  |  |
Effective interest rate | 2.32% |  |  |
Unamortized debt discount | $ 4,352 |  | $ 4,911 | $ 5,097
3.75% Senior Unsecured Notes Due April 15, 2027 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate | 3.75% | 3.75% |  |
Maturity date | Apr. 15, 2027 |  |  |
Effective interest rate | 3.76% |  |  |
Unamortized debt discount | $ 474 |  |  |
3.875% Senior Unsecured Notes Due April 15, 2030 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate | 3.875% | 3.875% |  |
Maturity date | Apr. 15, 2030 |  |  |
Effective interest rate | 3.89% |  |  |
Unamortized debt discount | $ 1,471 |  |  |
4.50% Senior Unsecured Notes Due April 15, 2050 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate | 4.50% | 4.50% |  |
Maturity date | Apr. 15, 2050 |  |  |
Effective interest rate | 4.52% |  |  |
Unamortized debt discount | $ 4,333 |  |  |

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