Basis of Presentation and Summary of Significant Accounting Policies (Details) $ in Millions	12 Months Ended
	Jan. 29, 2022 USD ($) segment store	Jan. 30, 2021 USD ($) segment	Feb. 01, 2020 USD ($) segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of DICK'S Sporting Goods stores | store	730
Cash and Cash Equivalents / Cash Management
Checks drawn in excess of cash balances not yet presented for payment	$ 96.6	$ 111.2
Accounts Receivable
Allowance for credit losses	3.2	2.7
Inventories
Inventory valuation and vendor allowances	86.1	101.3
Advertising Costs
Advertising expense net of cooperative advertising	$ 410.9	$ 293.4	$ 338.7
Operating Segment Information
Number of reportable segments | segment	1	1	1