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Fair Value Measurements | 12 Months Ended
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Feb. 28, 2014
Fair Value Measurements [Abstract] |
Fair Value Measurements | 6.Fair value measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants in the principal market or, if none exists, the most advantageous market, for the specific asset or liability at the measurement date (referred to as the “exit price”). The fair value should be based on assumptions that market participants would use, including a consideration of nonperformance risk. We assess the inputs used to measure fair value using the three-tier hierarchy. The hierarchy indicates the extent to which inputs used in measuring fair value are observable in the market. Level 1 Inputs include unadjusted quoted prices in active markets for identical assets or liabilities that we can access at the measurement date. Level 2 Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, including quoted prices for similar assets in active markets, quoted prices from identical or similar assets in inactive markets and observable inputs such as interest rates and yield curves. Level 3 Inputs that are significant to the measurement that are not observable in the market and include management's judgments about the assumptions market participants would use in pricing the asset or liability (including assumptions about risk). Our fair value processes include controls that are designed to ensure that fair values are appropriate. Such controls include model validation, review of key model inputs, analysis of period-over-period fluctuations and reviews by senior management. Valuation Methodologies Money M arket S ecurities. Money market securities are cash equivalents, which are included in either cash and cash equivalents or other assets, and consist of highly liquid investments with original maturities of three months or less. We use quoted market prices for identical assets to measure fair value. Therefore, all money market securities are classified as Level 1. Mutual Fund Investments. Mutual fund investments consist of publicly traded mutual funds that primarily include diversified investments in large-, mid- and small-cap domestic and international companies. The investments, which are included in other assets, are held in a rabbi trust established to fund informally our executive deferred compensation plan. We use quoted active market prices for identical assets to measure fair value. Therefore, all mutual fund investments are classified as Level 1. Derivative Instruments. The fair values of our derivative instruments are included in either other current assets or accounts payable. As described in Note 5, as part of our risk management strategy, we utilize derivative instruments to manage differences in the amount of our known or expected cash receipts and our known or expected cash payments principally related to the funding of our auto loan receivables. Our derivatives are not exchange-traded and are over-the-counter customized derivative instruments. All of our derivative exposures are with highly rated bank counterparties. We measure derivative fair values assuming that the unit of account is an individual derivative instrument and that derivatives are sold or transferred on a stand-alone basis. We estimate the fair value of our derivatives using quotes determined by the derivative counterparties and third-party valuation services. Quotes from third-party valuation services and quotes received from bank counterparties project future cash flows and discount the future amounts to a present value using market-based expectations for interest rates and the contractual terms of the derivative instruments. The models do not require significant judgment and model inputs can typically be observed in a liquid market; however, because the models include inputs other than quoted prices in active markets, all derivatives are classified as Level 2. Our derivative fair value measurements consider assumptions about counterparty and our own nonperformance risk. We monitor counterparty and our own nonperformance risk and, in the event that we determine that a party is unlikely to perform under terms of the contract, we would adjust the derivative fair value to reflect the nonperformance risk. Items Measured a t Fair Value o n a Recurring Basis
| As of February 28, 2014
(In thousands) | Level 1 | Level 2 | Total
Assets: |  |  |  |  |  |  |  |  |
Money market securities | $ | 641,622 |  | $ | ― |  | $ | 641,622 |
Mutual fund investments |  | 5,609 |  |  | ― |  |  | 5,609 |
Total assets at fair value | $ | 647,231 |  | $ | ― |  | $ | 647,231 |
Percent of total assets at fair value |  | 100.0 | % |  | ― | % |  | 100.0 | %
Percent of total assets |  | 5.5 | % |  | ― | % |  | 5.5 | %
Liabilities: |  |  |  |  |  |  |  |  |
Derivative instruments | $ | ― |  | $ | 1,351 |  | $ | 1,351 |
Total liabilities at fair value | $ | ― |  | $ | 1,351 |  | $ | 1,351 |
Percent of total liabilities |  | ― | % |  | ― | % |  | ― | %
| As of February 28, 2013
(In thousands) | Level 1 | Level 2 | Total
Assets: |  |  |  |  |  |  |  |  |
Money market securities | $ | 461,260 |  | $ | ― |  | $ | 461,260 |
Mutual fund investments |  | 4,024 |  |  | ― |  |  | 4,024 |
Total assets at fair value | $ | 465,284 |  | $ | ― |  | $ | 465,284 |
Percent of total assets at fair value |  | 100.0 | % |  | ― | % |  | 100.0 | %
Percent of total assets |  | 4.7 | % |  | ― | % |  | 4.7 | %
Liabilities: |  |  |  |  |  |  |  |  |
Derivative instruments | $ | ― |  | $ | 517 |  | $ | 517 |
Total liabilities at fair value | $ | ― |  | $ | 517 |  | $ | 517 |
Percent of total liabilities |  | ― | % |  | ― | % |  | ― | %
There were no transfers between Levels 1 and 2 for the years ended February 28, 2014 and 2013.

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13504-108611 + Details
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