Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2024 USD ($)	Feb. 01, 2025 USD ($) state segment number_of_store store shares	Feb. 03, 2024 USD ($) shares	Jan. 28, 2023 USD ($) shares
Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | segment		1
Number of operating segments | segment		2
Collateral trust		$ 63,900	$ 60,800	$ 57,800
Cash and cash equivalents		$ 4,730,744	4,872,446	4,551,876
Packaway inventory, storage period, less than		6 months
Depreciation and amortization expense on property and equipment		$ 446,788	419,432	394,655
Capitalized interest		19,447	12,106	5,678
Gain on sale of property	$ 61,600	61,575	0	0
Proceeds from sale of property	$ 82,600	82,642	0	0
Impairment of long-lived assets		0	0	0
Book cash overdrafts		71,300	61,400
Supplier finance program, obligation		$ 159,209	$ 146,937
Supplier Finance Program, Obligation, Current, Statement of Financial Position [Extensible Enumeration]		Accounts payable	Accounts payable
Expected recovery of merchandise inventory		$ 12,400	$ 12,100	11,800
Refund due to customers		24,100	23,700	23,100
Advertising costs		$ 70,200	$ 67,700	$ 66,500
Anti-dilutive weighted average shares excluded from EPS calculation (in shares) | shares		49,600	200	11,100
Standby Letters of Credit
Summary Of Significant Accounting Policies [Line Items]
Letters of credit, outstanding		$ 1,800	$ 2,200	$ 2,600
Property, Plant and Equipment
Summary Of Significant Accounting Policies [Line Items]
Property and equipment purchased but not yet paid		$ 85,400	$ 78,200	$ 71,000
Minimum | Equipment
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life, straight-line method		3 years
Minimum | Land, Buildings and Improvements
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life, straight-line method		20 years
Minimum | Software and Software Development Costs
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life, straight-line method		3 years
Maximum | Equipment
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life, straight-line method		12 years
Maximum | Land, Buildings and Improvements
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life, straight-line method		40 years
Maximum | Software and Software Development Costs
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life, straight-line method		7 years
Ross Dress for Less
Summary Of Significant Accounting Policies [Line Items]
Number of stores | store		1,831
Number of states company operates in | state		43
dd's Discounts
Summary Of Significant Accounting Policies [Line Items]
Number of stores | number_of_store		355
Number of states company operates in | state		22