Fair Value Measurements and Financial Instruments - Gains and Losses on Derivative Instruments and Foreign Currency Transaction (Detail) - Selling, General and Administrative Expenses [Member] - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Feb. 01, 2020 |
Feb. 02, 2019 |
Feb. 03, 2018 |
|
| Fair Value Derivative Contract Assets and Liabilities Measured On Recurring Basis Gain Loss Included In Earnings [Line Items] | |||
| Gains (losses) on the changes in fair value of derivative instruments | $ 4.1 | $ 9.6 | $ (24.6) |
| (Losses) gains on the re-measurement of related intercompany loans denominated in foreign currencies | (3.1) | (6.6) | 27.0 |
| Net gains | $ 1.0 | $ 3.0 | $ 2.4 |