Fair Value Measurements and Financial Instruments - Gains and Losses on Derivative Instruments and Foreign Currency Transaction (Detail) - Selling, General and Administrative Expense - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jul. 29, 2017 |
Jul. 30, 2016 |
Jul. 29, 2017 |
Jul. 30, 2016 |
|
| 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 | $ (2.1) | $ 3.5 | $ (10.1) | $ 5.5 |
| Gains (losses) on the re-measurement of related intercompany loans and foreign currency assets and liabilities | 4.2 | (2.9) | 12.5 | (3.4) |
| Total | $ 2.1 | $ 0.6 | $ 2.4 | $ 2.1 |