Debt (Narrative) (Details) (USD $)	12 Months Ended					12 Months Ended				12 Months Ended		12 Months Ended
	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