Income Taxes - Additional Information (Detail) - USD ($) $ in Millions		12 Months Ended
	Nov. 04, 2018	Feb. 02, 2019	Nov. 03, 2018	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Operating Loss Carryforwards [Line Items]
Statutory tax rate	21.00%	21.00%	23.40%	35.00%	35.00%
Decrease in deferred tax liability		$ 11.0
Net impact on remeasurement of US deferred tax assets and liabilities		64.7
Foreign capital loss carry forward		13.9		$ 12.0
Capital loss carryforwards		13.9		12.0
Change in valuation allowance		1.9
Unrecognized tax benefits		18.1		12.0	$ 12.0	$ 11.4
Increase resulting from settlements with taxing authorities		19.5
Accrued interest related to unrecognized tax benefits		3.2
Accrued penalties		0.7
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards		124.7
Capital loss carryforwards		3.0
Internal Revenue Service (IRS)
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards		32.1
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards		13.4
Deferred tax assets		13.7
Foreign capital loss carry forward		$ 11.6		$ 12.0
Bermuda
Operating Loss Carryforwards [Line Items]
Statutory tax rate		0.00%