Investments - Schedule of Securities Available for Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Jun. 30, 2024
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 667,258	$ 1,195,795
Gross Unrealized Gains	1,289	853
Gross Unrealized Losses	(620)	(2,900)
Allowance for Credit Losses	(1,243)	(664)
Fair Value	666,684	1,193,084
Other Receivables \| Asset Pledged as Collateral \| 2021-Z1 and 2021-Z2 \| Repurchase Agreement
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	66,900	46,700
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	17,327	34,468
Gross Unrealized Gains	20	9
Gross Unrealized Losses	0	(4)
Allowance for Credit Losses	0	0
Fair Value	17,347	34,473
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	203,942	243,639
Gross Unrealized Gains	613	95
Gross Unrealized Losses	(261)	(1,074)
Allowance for Credit Losses	0	0
Fair Value	204,294	242,660
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	51,248	298,005
Gross Unrealized Gains	45	7
Gross Unrealized Losses	0	(166)
Allowance for Credit Losses	0	0
Fair Value	51,293	297,846
Agency bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	13,324	15,283
Gross Unrealized Gains	13	0
Gross Unrealized Losses	(18)	(124)
Allowance for Credit Losses	0	0
Fair Value	13,319	15,159
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,184	3,943
Gross Unrealized Gains	11	10
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0
Fair Value	5,195	3,953
Non-US
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,161	5,310
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(5)	(35)
Allowance for Credit Losses	0	0
Fair Value	3,156	5,275
US
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	302,799	543,421
Gross Unrealized Gains	517	33
Gross Unrealized Losses	(287)	(1,406)
Allowance for Credit Losses	0	0
Fair Value	303,029	542,048
US \| Asset Pledged as Collateral
Debt Securities, Available-for-sale [Line Items]
Fair Value	73,800	54,100
Securitization notes receivable and certificates
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	70,273	51,726
Gross Unrealized Gains	70	699
Gross Unrealized Losses	(49)	(91)
Allowance for Credit Losses	(1,243)	(664)
Fair Value	$ 69,051	51,670
Commercial Paper & Agency Bonds \| Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Fair Value		$ 61,500

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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