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Summary of Significant Accounting Policies - Additional Information (Detail)		12 Months Ended
	Feb. 04, 2018 USD ($)	Feb. 02, 2019 USD ($) Segment	Feb. 03, 2018 USD ($)	Jan. 28, 2017 USD ($)		Jan. 01, 2019 USD ($)	Feb. 02, 2018 USD ($)
Significant Accounting Policies [Line Items]
Number of reportable segments | Segment		1
Short-term investments		$ 92,135,000	$ 0
Long-term investments			0
Weighted average remaining useful life, assets		8 years
Asset impairment charges		$ 546,000	0	$ 20,576,000	[1]
Goodwill impairment				2,500,000
Finite-lived impairment charges		0	0	0
Revenue related to gift card breakage		8,900,000	10,100,000	9,100,000
Prepaid advertising expense		12,600,000					$ 6,600,000
Advertising expense		$ 143,200,000	$ 129,800,000	124,500,000
Number of operating segments | Segment		2
Minimum
Significant Accounting Policies [Line Items]
Finite lived intangibles, useful life		15 years
Maximum
Significant Accounting Policies [Line Items]
Finite lived intangibles, useful life		25 years
China and Hong Kong
Significant Accounting Policies [Line Items]
Goodwill impairment		$ 0		2,500,000
Wholly-owned Retail Stores | United Kingdom, Hong Kong and China
Significant Accounting Policies [Line Items]
Asset impairment charges				7,200,000
Wholly-owned Retail Store and E-commerce Operations | United Kingdom, Hong Kong and China | Non-store Corporate Assets
Significant Accounting Policies [Line Items]
Asset impairment charges				10,800,000
Retail Stores | China and Hong Kong
Significant Accounting Policies [Line Items]
Goodwill impairment				$ 2,500,000
ASU No. 2016-02
Significant Accounting Policies [Line Items]
Assets expected to recognise						$ 1,200,000,000
Liabilities expected to recognise						$ 1,500,000,000
ASC 606
Significant Accounting Policies [Line Items]
Net increase to opening retained earnings due to cumulative impact of adoption	$ 200,000
[1] Non-cash impairment charges of $20.6 million for Fiscal 2016 consisted of $7.2 million for the impairment of all Company-owned retail stores in the United Kingdom, Hong Kong and China, as well as $10.8 million of impairment and restructuring charges related to non-store corporate assets that support the international retail stores and e-commerce operations and $2.5 million of goodwill impairment for the China and Hong Kong retail operations.

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