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Debt (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Aug. 31, 2017	Aug. 31, 2016	Sep. 29, 2017	Feb. 28, 2017
Debt Instrument [Line Items]
Non-recourse notes payable	$ 11,303,502			$ 10,742,425
Capitalized interest	3,700	$ 5,300
Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	1,200,000
Unused capacity	1,180,000
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
Term Securitizations
Debt Instrument [Line Items]
Non-recourse notes payable	$ 9,240,000
Debt maturity, end	Oct. 16, 2023
Warehouse facilities
Debt Instrument [Line Items]
Non-recourse notes payable	$ 2,060,000
Warehouse Facilities Maximum Borrowing Capacity	2,900,000
Remaining borrowing capacity	839,000
Warehouse Facility Three [Member]
Debt Instrument [Line Items]
Warehouse Facilities Maximum Borrowing Capacity	100,000
Warehouse Facility Two
Debt Instrument [Line Items]
Warehouse Facilities Maximum Borrowing Capacity	1,500,000
Warehouse Facility One
Debt Instrument [Line Items]
Warehouse Facilities Maximum Borrowing Capacity	$ 1,300,000
Subsequent Event [Member] | Warehouse Facility Three [Member]
Debt Instrument [Line Items]
Warehouse Facilities Maximum Borrowing Capacity			$ 140,000

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
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