Summary of Significant Accounting Policies and Related Matters (Details) shares in Millions	7 Months Ended	12 Months Ended
	Sep. 30, 2020 segment	Feb. 25, 2023 USD ($) segment day shares	Feb. 26, 2022 USD ($) shares	Feb. 27, 2021 USD ($) shares
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of operating segments | segment	2	1
Number of business days | day		5
Credit and debit card receivables, at carrying value		$ 24,500,000	$ 47,900,000
Restricted cash		66,242,000	0
Long-term restricted cash		$ 15,262,000	31,388,000
Auction rate securities interval period, one		7 days
Auction rate securities interval period, two		28 days
Auction rate securities interval period, three		35 days
Long-term available-for-sale investment securities sold		$ 20,300,000
Proceeds from sale of available-for-sale investment securities		18,864,000	0	$ 0
Realized loss on available-for-sale investment securities		1,411,000	0	0
Long-term available-for-sale investment securities loss reclassified out of accumulated other comprehensive loss		1,100,000
Short-term available-for-sale investment securities		0	0
Cost of repairs and maintenance		$ 34,700,000	80,000,000	117,700,000
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]		Impairments
Non-cash pre-tax impairment charge		$ 1,280,000,000	30,800,000
Indefinite-lived intangible assets		$ 13,200,000	16,300,000
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]		Impairments
Prepaid expenses and other current assets		$ 147,261,000	198,248,000
Income taxes receivable		16,100,000	26,500,000
Net sales for gift card and merchandise credit redemptions		76,700,000	72,300,000
Loyalty program liabilities		4,200,000
Liability for estimated returns		6,900,000	23,600,000
Right of return asset for merchandise, percentage		4,800,000	14,600,000
Cooperative advertising amount		24,000,000	35,800,000	28,900,000
Advertising expense		$ 393,700,000	$ 407,100,000	$ 347,800,000
Share-Based Payment Arrangement
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Shares excluded from computation of earnings per share (in shares) | shares		1.7	2.9	2.4
Preferred Stock and Derivatives
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Shares excluded from computation of earnings per share (in shares) | shares		15.7
Auction Rate Securities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long term available-for-sale investment securities				$ 20,300,000
Valuation adjustments				$ 1,100,000
Domestic Merchandise | Net Sales | Product Concentration Risk
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage of net sales		35.80%	37.40%	34.70%
Home Furnishings | Net Sales | Product Concentration Risk
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage of net sales		64.20%	62.60%	65.30%
North American Retail | Trade Names
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Intangible asset impairment charge		$ 2,900,000	$ 5,700,000	$ 35,100,000
Building
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life		39 years
Furniture, Fixtures and Equipment | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life		7 years
Furniture, Fixtures and Equipment | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life		20 years
Computer Equipment and Software | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life		3 years
Computer Equipment and Software | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life		10 years