Goodwill and Other Intangible Assets - Schedule of Carrying Amount and Accumulated Amortization of Identifiable Intangible Assets (Details) - USD ($) $ in Millions	Oct. 28, 2023	Jan. 28, 2023	Oct. 29, 2022
Finite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Carrying Amount	$ 355.4		$ 450.4
Accumulated Amortization	(91.4)		(81.1)
Total intangible assets	263.9	$ 272.1	369.3
JOANN Trade Name
Finite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Carrying Amount	230.0		325.0
Accumulated Amortization			0.0
Joann.com Domain Name
Finite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Carrying Amount	10.0		10.0
Accumulated Amortization			0.0
Creativebug Trade Name
Finite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Carrying Amount	$ 0.1
Estimated Life in Years	10 years
Gross Carrying Amount			0.1
Accumulated Amortization	$ (0.1)		(0.1)
Technology
Finite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Carrying Amount	$ 5.3
Estimated Life in Years	3 years
Gross Carrying Amount			5.3
Accumulated Amortization	$ (4.6)		(1.2)
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Carrying Amount	$ 110.0
Estimated Life in Years	16 years
Gross Carrying Amount			110.0
Accumulated Amortization	$ (86.7)		$ (79.8)