Summary of Significant Accounting Policies (Narrative) (Details)	12 Months Ended
	Jan. 30, 2021 USD ($) segment number_of_store state shares	Feb. 01, 2020 USD ($) shares	Feb. 02, 2019 USD ($) shares	Feb. 03, 2019 USD ($)	Feb. 03, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | segment	1
Purchase obligations	$ 3,100,000,000
Restricted investments	0	$ 0	$ 400,000
Cash and cash equivalents	$ 4,819,293,000	1,351,205,000	1,412,912,000
Packaway inventory, storage period, less than	6 months
Depreciation and amortization expense on property and equipment	$ 364,245,000	350,892,000	330,357,000
Capitalized interest	12,251,000	4,367,000	2,497,000
Asset impairment charges	0	0	0
Book cash overdrafts	63,500,000	138,800,000
Expected recovery of merchandise inventory	10,700,000	10,700,000	10,200,000
Refund due to customers	21,200,000	20,900,000	19,800,000
Advertising costs	$ 42,500,000	$ 74,000,000.0	$ 79,900,000
Anti-dilutive weighted average shares excluded from EPS calculation (in shares) | shares	79,500	27,400	23,700
Operating lease liability	$ 3,219,714,000
Operating lease assets	3,084,819,000	$ 3,053,782,000
Cumulative effect, increase (decrease), of adoption of accounting standard	3,290,640,000	3,359,249,000	$ 3,305,746,000		$ 3,049,308,000
Cumulative Effect, Period of Adoption, Adjustment
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect, increase (decrease), of adoption of accounting standard			(19,614,000)		19,884,000
Retained earnings
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect, increase (decrease), of adoption of accounting standard	2,185,801,000	2,330,702,000	2,298,762,000		2,071,400,000
Retained earnings | Cumulative Effect, Period of Adoption, Adjustment
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect, increase (decrease), of adoption of accounting standard			(19,614,000)	$ (19,600,000)	$ 19,884,000
Accounting Standards Update 2016-02
Summary Of Significant Accounting Policies [Line Items]
Operating lease liability				2,900,000,000
Operating lease assets				$ 2,900,000,000
Property, Plant and Equipment
Summary Of Significant Accounting Policies [Line Items]
Property and equipment purchased but not yet paid	$ 56,200,000	$ 40,300,000	$ 33,700,000
Minimum | Equipment
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life, straight-line method	3 years
Minimum | Land Improvements and Buildings
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life, straight-line method	20 years
Minimum | Computer Software
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 Improvements and Buildings
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life, straight-line method	40 years
Maximum | Computer Software
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 | number_of_store	1,585
Number of states company operates in | state	40
dd's Discounts
Summary Of Significant Accounting Policies [Line Items]
Number of stores | number_of_store	274
Number of states company operates in | state	21