Fair Value Measurements (Details) $ in Millions	12 Months Ended
	Feb. 01, 2020 USD ($) store	Feb. 02, 2019 USD ($)
Fair Value Measurements
Number of stores in which hunt category merchandise was removed to date | store	135
Number of stores in which the Company plans to remove hunt category merchandise | store	440
Hunt removal charges	$ 57.7
Non-cash impairments of a trademark and store assets in connection with hunt removal	35.7
Inventory write-down in connection with hunt removal	13.1
Charges related to exit of Field & Stream stores	$ 8.9
Number of Field & Stream stores subleased to Sportsman's Warehouse | store	8
Level 1
Fair Value Measurements
Deferred compensation plan assets held in trust	$ 99.7	$ 77.3