Shareholders' Equity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Feb. 01, 2020 USD ($) $ / shares shares	Feb. 02, 2019 USD ($) shares	Feb. 03, 2018 USD ($) shares	Aug. 17, 2017 USD ($)	Jan. 28, 2017 shares
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	100,000,000.0
Preferred Stock, Par or Stated Value Per Share | $ / shares	$ 0
Preferred Stock, Shares Issued	0
Stock Repurchase Program, Authorized Amount | $		$ 500,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $	$ 334,900	$ 476,600		$ 33,500
Repurchase of Class A common shares (in shares)	7,100,000	2,000,000.0
Stock Repurchased During Period, Value | $	$ 141,629	$ 47,530	$ 9,375
Class A Common Shares
Class of Stock [Line Items]
Common Stock, Voting Rights, Number Of Votes | $ / shares	1
Common Stock, Shares Authorized	250,000,000	250,000,000
Common Stock, Shares, Issued	86,202,000	85,763,000
Common Shares, outstanding (in shares)	64,033,000	70,672,000	72,294,000		72,447,000
Repurchase of Class A common shares (in shares)	7,078,000	2,000,000	500,000
Class B Common Shares
Class of Stock [Line Items]
Common Stock, Voting Rights, Number Of Votes | $ / shares	8
Common Stock, Shares Authorized	100,000,000	100,000,000
Common Stock, Shares, Issued	7,733,000	7,733,000
Common Shares, outstanding (in shares)	7,733,000	7,733,000	7,733,000		7,733,000
Treasury shares
Class of Stock [Line Items]
Common Shares, outstanding (in shares)	22,169,000	15,091,000	13,091,000		12,591,000