Fair Value Measurements	3 Months Ended
Fair Value Measurements	Apr. 30, 2016
Fair Value Measurements
Fair Value Measurements	Note 8.Fair Value Measurements All short-term financial instruments are generally carried at amounts that approximate estimated fair value. The fair value is the price at which an asset could be exchanged in a current transaction between knowledgeable, willing parties. Assets measured at fair value are categorized based upon the lowest level of significant input to the valuations. Level 1 – quoted prices in active markets for identical assets and liabilities. Level 2 – quoted prices for identical assets and liabilities in markets that are not active, or observable inputs other than quoted prices in active markets for identical assets and liabilities. Level 3 – unobservable inputs in which there is little or no market data available, which require the reporting entity to develop its own assumptions. The carrying amounts of cash and cash equivalents (which the Company classifies as Level 1 assets), accounts receivable – trade and accounts payable represent their respective fair values due to their short- term nature. There was no debt outstanding under the Revolving Credit Facility as of April 30, 2016. The fair value of the Company’s 5.875% Notes, based on market prices for publicly-traded debt (which the Company classifies as Level 2 inputs), was $1,197.0 and $1,136.4 as of April 30, 2016 and January 31, 2016, respectively.

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.