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Debt (Narrative) (Details) (USD $) | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended
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Feb. 28, 2014 | Feb. 28, 2013 | Feb. 29, 2012 | Feb. 28, 2014 Revolving Credit Facility [Member] | Feb. 28, 2014 Warehouse Facilities [Member] | Feb. 28, 2014 Term Securitizations Debt [Member] | Feb. 28, 2014 Warehouse Facility One [Member] Warehouse Facilities [Member] | Feb. 28, 2014 Warehouse Facility Two [Member] Warehouse Facilities [Member] | Nov. 30, 2013 Warehouse Facility Two [Member] Warehouse Facilities [Member] | Feb. 28, 2014 Previously Reported [Member] Warehouse Facility Two [Member] Warehouse Facilities [Member] | Aug. 31, 2013 Previously Reported [Member] Warehouse Facility Two [Member] Warehouse Facilities [Member] | Feb. 28, 2014 Minimum [Member] Finance And Capital Lease Obligation [Member] | Feb. 28, 2014 Maximum [Member] | Feb. 28, 2014 Maximum [Member] Finance And Capital Lease Obligation [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity of credit facility |  |  |  | $ 700,000,000 |  |  |  |  |  |  |  |  |  |
Revolving credit facility, expiration date |  |  |  | Aug. 01, 2016 |  |  |  |  |  |  |  |  |  |
Weighted average interest rate | 1.50% | 1.80% | 1.60% |  |  |  |  |  |  |  |  |  |  |
Capitalized interest | 0 | 0 | 0 |  |  |  |  |  |  |  |  |  |  |
Initial lease terms, in years |  |  |  |  |  |  |  |  |  |  |  | 15 years | 20 years | 20 years
Debt maturity, end |  |  |  |  |  | Aug. 01, 2020 |  |  |  |  |  |  |  |
Non-recourse notes payable | 7,250,000,000 | 5,860,000,000 |  |  | 879,000,000 | 6,370,000,000 |  |  |  |  |  |  |  |
Warehouse facilities maximum borrowing capacity |  |  |  |  | 1,800,000,000 |  | 800,000,000 | 1,000,000,000 | 1,000,000,000 |  | 900,000,000 |  |  |
Remaining borrowing capacity |  |  |  |  | $ 921,000,000 |  |  |  |  |  |  |  |  |
Warehouse facility expiration date |  |  |  |  |  |  | Aug. 01, 2014 | Feb. 01, 2015 |  | Feb. 01, 2014 |  |  |  |
Warehouse facility additional term of facility, days |  |  |  |  |  |  | 364 days |  |  |  |  |  |  |

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- Definition Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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