Fair Value Measurements	9 Months Ended
Fair Value Measurements	Oct. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements ASC 820, Fair Value Measurement and Disclosures, outlines a valuation framework and creates a fair value hierarchy for assets and liabilities as follows: Level 1: Observable inputs such as quoted prices in active markets; Level 2: Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and Level 3: Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions. Recurring The Company measures its deferred compensation plan assets held in trust at fair value on a recurring basis using Level 1 inputs. Such assets consist of investments in various mutual funds made by eligible individuals as part of the Company’s deferred compensation plans. As of October 31, 2020 and February 1, 2020, the fair value of the Company’s deferred compensation plans was $111.2 million and $99.7 million, respectively, as determined by quoted prices in active markets. The Company’s policy for recognition of transfers between levels of the fair value hierarchy is to recognize any transfer at the end of the fiscal quarter in which the determination to transfer was made. The Company bases the fair value of its Convertible Senior Notes on Level 2 inputs, specifically their quoted price in an inactive market on the last trading day in a reporting period. On October 31, 2020, the fair value of the Convertible Senior Notes was approximately $1.0 billion, compared to their carrying value of $411.3 million. The carrying value excluded amounts classified within additional paid-in capital and any unamortized discounts. See Note 6 for additional information. Due to the short-term nature of these instruments, the fair value of cash and cash equivalents, accounts receivable, accounts payable, borrowings under the Credit Facility and certain other liabilities approximated their carrying values at both October 31, 2020 and February 1, 2020. Nonrecurring Assets and liabilities recognized or disclosed at fair value on a nonrecurring basis may include property and equipment, goodwill and other intangible assets, equity and other assets. These assets are required to be assessed for impairment when events or circumstances indicate that the carrying value may not be recoverable, and at least annually for goodwill and indefinite-lived intangible assets. In the event that an impairment is required, the asset is adjusted to fair value, using Level 3 inputs. The Company did not record any such impairment charges during fiscal 2020.

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.