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Description of Business	9 Months Ended
Description of Business	Nov. 03, 2018
Accounting Policies [Abstract]
Description of Business	1. Description of Business BJ’s Wholesale Club Holdings, Inc. (the “Company”) is a leading warehouse club operator in the Eastern United States. As of November 3, 2018, the Company operated 216 warehouse clubs, 136 of which operate gasoline stations, in 16 states. The Company became a publicly traded entity in connection with its initial public offering (“IPO”) of common stock and listing on the New York Stock Exchange (“NYSE”) under the ticker symbol “BJ.” The Company follows, and reports based on the National Retail Federation’s fiscal calendar. The thirteen-week periods ended November 3, 2018 and October 28, 2017 are referred to as the third quarter of 2018 and 2017, respectively.