Auto Loan Receivables (Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 29, 2020	Mar. 01, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	$ 433,030	$ 411,150	$ 157,800	$ 359,800
Financing Receivable, Allowance for Credit Loss, Writeoff	(227,200)	(230,400)
Provision for loan losses	141,700	160,700	$ 185,700
Recoveries (2)	107,400	$ 121,000
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	$ 21,900
Accounting Standards Update 2016-13 [Member] | Financing Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss				$ 202,000
Allowance For Loan Losses
Financing Receivable, Allowance for Credit Loss [Line Items]
Item as percent of total ending managed receivables	2.77%	2.97%	1.16%	2.64%
Core managed receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	$ 377,500	$ 379,400	$ 140,500	$ 319,700
Financing Receivable, Allowance for Credit Loss, Writeoff	(206,500)	(210,000)
Provision for loan losses	105,200	157,400
Recoveries (2)	99,400	112,300
Core managed receivables | Accounting Standards Update 2016-13 [Member] | Financing Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss				179,200
Other managed receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	55,500	31,700	$ 17,300	40,100
Financing Receivable, Allowance for Credit Loss, Writeoff	(20,700)	(20,400)
Provision for loan losses	36,500	3,300
Recoveries (2)	$ 8,000	$ 8,700
Other managed receivables | Accounting Standards Update 2016-13 [Member] | Financing Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss				$ 22,800