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Financing - Additional Information (Details) - USD ($) $ in Millions								6 Months Ended	9 Months Ended		21 Months Ended
	Oct. 29, 2022	Dec. 22, 2021	Jul. 07, 2021	Jul. 06, 2021	Mar. 19, 2021	May 21, 2018	Oct. 21, 2016	Jul. 30, 2022	Oct. 29, 2022	Oct. 30, 2021	Oct. 29, 2022	Oct. 28, 2023	Jan. 29, 2022	Nov. 25, 2020
Debt Instrument [Line Items]
Percentage Of Maximum Credit excess capacity									12.50%
Total debt	$ 1,077.3								$ 1,077.3	$ 869.9	$ 1,077.3		$ 794.3
Term loan payments									$ (5.1)	(708.0)
Debt covenant description									The covenants contained in the credit agreements restrict JOANN’s ability to pay dividends or make other distributions; accordingly, any dividends may only be paid in accordance with such covenants. Among other restrictions, the credit agreements permit the public parent company to pay dividends on its common stock in amounts not to exceed the greater of 6% per annum of the net proceeds received by, or contributed to Jo-Ann Stores, LLC from any such public offering of common stock of Jo-Ann Stores, LLC or its direct or indirect parent company, or 7% of Market Capitalization (as defined in the credit agreements). So long as there is no event of default, the credit agreements also allow dividends in amounts up to $100 million, which amount can increase if certain other conditions are satisfied, including if JOANN’s leverage does not exceed certain thresholds. Additionally, the Second Amended Revolving Credit Facility allows for unlimited dividends, so long as there is no event of default and the Company’s excess availability after giving pro forma effect for the thirty-day period immediately preceding such payment shall be greater than (a) the greater of 12.5% of the maximum credit and $40 million and the consolidated fixed charge coverage ratio shall be greater than or equal to 1.0 to 1.0 or (b) 17.5% of the maximum credit calculated.
Credit agreement market capitalization percentage									7.00%
Maximum credit fixed charge											$ 40.0
Percentage of maximum credit									17.50%
Maximum
Debt Instrument [Line Items]
Common stock dividend rate percentage									6.00%
Fixed charge coverage ratio											1.00%
Minimum
Debt Instrument [Line Items]
Amount available for dividend	$ 100.0								$ 100.0		$ 100.0
Fixed charge coverage ratio									1.00%
Term Loan due 2023
Debt Instrument [Line Items]
Total debt							$ 725.0
Percentage of face value							98.00%
Repayment of debt issuance cost			$ 3.1
Term Loan due 2024
Debt Instrument [Line Items]
Total debt						$ 225.0
Percentage of face value						98.50%
Term loan payments					$ (72.7)
Repayment of debt issuance cost					$ 0.9
Term Loan due 2028
Debt Instrument [Line Items]
Debt discount			3.4
Fees and expenses representing banking, legal other professional services			6.8
Fees capitalized			3.8
Amended Credit Agreement
Debt Instrument [Line Items]
Debt instrument, maturity date									Nov. 25, 2025
Second Amendment
Debt Instrument [Line Items]
Issuance of senior secured financing		$ 500.0
Debt instrument, maturity date		Dec. 22, 2026
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.20%
Total facility	$ 650.0
Amount of outstanding letters of credit obligation	150.0								$ 150.0		150.0
Second Amendment \| Minimum
Debt Instrument [Line Items]
Line of Credit Increments	20.0								$ 20.0		20.0
Second Amendment \| Term Loan due 2028
Debt Instrument [Line Items]
Debt instrument, maturity date									Jul. 07, 2028
Total debt			$ 675.0
Percentage of face value			99.50%
Second Amendment \| Term Loan due 2028 \| LIBOR Floor
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			0.75%	1.00%
Senior Notes \| Amended Credit Agreement
Debt Instrument [Line Items]
Secured debt														$ 500.0
Eurodollar Rate Loans \| Second Amendment
Debt Instrument [Line Items]
Percentage Of Maximum Credit excess capacity									1.25%
Eurodollar Rate Loan Additional Margin Percentage								1.50%
Percentage of maximum credit									40.00%
Eurodollar Rate Loans \| Second Amendment \| Term Loan due 2028
Debt Instrument [Line Items]
Applicable interest rates			4.75%	5.00%
Base Rate Loans \| Second Amendment
Debt Instrument [Line Items]
Base Rate Loans Additional Margin									0.50%
Percentage Of Maximum Credit excess capacity									0.25%
Percentage of maximum credit									40.00%
Base Rate Loans \| Second Amendment \| Term Loan due 2028
Debt Instrument [Line Items]
Applicable interest rates			3.75%	4.00%
Reduction of Debt and set up to Amortize Over Life of Term Loan \| Term Loan due 2028
Debt Instrument [Line Items]
Debt discount			$ 3.1
Charged to Earnings \| Term Loan due 2028
Debt Instrument [Line Items]
Debt discount			$ 0.3
Excess Capacity [Member] \| Eurodollar Rate Loans \| Second Amendment
Debt Instrument [Line Items]
Percentage Of Maximum Credit excess capacity									40.00%
Excess Capacity [Member] \| Base Rate Loans \| Second Amendment
Debt Instrument [Line Items]
Percentage Of Maximum Credit excess capacity									40.00%
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, initiation date									Oct. 21, 2016
Issuance of senior secured financing							$ 400.0
Debt instrument, maturity date									Oct. 20, 2021
Line of credit facility, maximum borrowing capacity	409.0								$ 409.0	196.5	409.0
Amount of outstanding letters of credit obligation	16.5								16.5	20.5	16.5
Excess availability amount	$ 74.5								$ 74.5	270.0	$ 74.5
Debt, weighted average interest rate	2.86%								2.86%		2.86%	4.28%
Total debt	$ 409.0								$ 409.0	$ 196.5	$ 409.0		$ 121.0
Revolving Credit Facility \| Term Loan due 2028
Debt Instrument [Line Items]
Debt, weighted average interest rate	5.58%								5.58%		5.58%	7.69%