Goodwill and Other Intangible Assets - Schedule of Carrying Amount and Accumulated Amortization of Identifiable Intangible Assets (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 29, 2022	Jan. 29, 2022	Oct. 30, 2021
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 369.3	$ 370.3	$ 372.1
Accumulated Amortization	(81.1)		(73.0)
Total intangible assets	450.4		445.1
JOANN Trade Name
Finite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Carrying Amount	$ 325.0		325.0
Estimated Life in Years
Accumulated Amortization	$ 0.0		0.0
Joann.com Domain Name
Finite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Carrying Amount	$ 10.0		10.0
Estimated Life in Years
Accumulated Amortization	$ 0.0		0.0
Creativebug Trade Name
Finite Lived Intangible Assets [Line Items]
Estimated Life in Years	10 years
Gross Carrying Amount	$ 0.1		0.1
Accumulated Amortization	$ (0.1)		0.0
Technology
Finite Lived Intangible Assets [Line Items]
Estimated Life in Years	3 years
Gross Carrying Amount	$ 5.3		0.0
Accumulated Amortization	$ (1.2)		0.0
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Estimated Life in Years	16 years
Gross Carrying Amount	$ 110.0		110.0
Accumulated Amortization	$ (79.8)		$ (73.0)