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Auto Loan Receivables (Ending Managed Receivables By Major Credit Grade) (Details) - USD ($) $ in Millions | Aug. 31, 2017 | Feb. 28, 2017
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Financing Receivable, By Major Credit Grade [Line Items] |  |
Total ending managed receivables | $ 11,252.8 | $ 10,681.3
Total ending managed receivables as percentage by major credit grade | 100.00% | 100.00%
Credit Grade A |  |
Financing Receivable, By Major Credit Grade [Line Items] |  |
Total ending managed receivables | $ 5,513.2 | $ 5,223.4
Total ending managed receivables as percentage by major credit grade | 49.00% | 48.90%
Credit Grade B |  |
Financing Receivable, By Major Credit Grade [Line Items] |  |
Total ending managed receivables | $ 3,986.6 | $ 3,739.4
Total ending managed receivables as percentage by major credit grade | 35.40% | 35.00%
Credit Grade C And Other |  |
Financing Receivable, By Major Credit Grade [Line Items] |  |
Total ending managed receivables | $ 1,753.0 | $ 1,718.5
Total ending managed receivables as percentage by major credit grade | 15.60% | 16.10%

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- Definition Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(3)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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