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Debt (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
May 31, 2018 | May 31, 2017 | Feb. 28, 2018
Debt Instrument [Line Items] |  |  |
Non-recourse notes payable | $ 11,969,825 |  | $ 11,644,615
Capitalized interest | 1,400 | $ 1,700 |
Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Maximum borrowing capacity | 1,200,000 |  |
Unused capacity | 1,199,600 |  |
Term Loan [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument Face Amount | 300,000 |  |
Outstanding Balance | 300,000 |  |
Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument Face Amount | 500,000 |  |
Outstanding Balance | $ 500,000 |  |
Finance and capital lease obligation | Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Initial lease terms, in years | 15 years |  |
Finance and capital lease obligation | Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Initial lease terms, in years | 20 years |  |
Asset-backed term funding transactions |  |  |
Debt Instrument [Line Items] |  |  |
Non-recourse notes payable | $ 9,940,000 |  |
Debt maturity, end | Apr. 15, 2025 |  |
Warehouse facilities |  |  |
Debt Instrument [Line Items] |  |  |
Non-recourse notes payable | $ 2,030,000 |  |
Warehouse Facilities Maximum Borrowing Capacity | 3,140,000 |  |
Remaining borrowing capacity | 1,110,000 |  |
Warehouse Facility One |  |  |
Debt Instrument [Line Items] |  |  |
Warehouse Facilities Maximum Borrowing Capacity | 1,300,000 |  |
Warehouse Facility Three |  |  |
Debt Instrument [Line Items] |  |  |
Warehouse Facilities Maximum Borrowing Capacity | 140,000 |  |
Warehouse Facility Two |  |  |
Debt Instrument [Line Items] |  |  |
Warehouse Facilities Maximum Borrowing Capacity | $ 1,700,000 |  |

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