Commitments and Contingencies (Tables)

9 Months Ended

Jun. 30, 2026

Commitments and Contingencies Disclosure [Abstract]

The following table summarizes our contingent contractual obligations as of June 30, 2026. Amounts presented in the following table represent the Company's current undiscounted exposure to guarantees, commitments, letters of credit, and surety bonds and the range of maximum undiscounted potential exposure. The maximum exposure is not reduced by the amounts, if any, that could be recovered under the recourse or collateralization provisions in the guarantees, commitments, letters of credit, and surety bonds.


	Amount (in $ millions)	Number of Agreements	Maximum Exposure Range for Each Agreement (in $ millions)
Guarantees and commitments	$6,140	113	$0 - 438.1
Letters of credit under bilateral credit facilities	6	4	0.1 - 3
Letters of credit under Revolver	193	46	0 - 28.4
Surety bonds	570	61	0 - 79.2
Total	$6,909	224

Schedule of Long-Term Purchase Commitment

The following table presents our future minimum purchase commitments by fiscal year, primarily for battery cells and modules, and liquidated damages, if the minimum purchase volumes or spend are not met, as of June 30, 2026:


in thousands	Purchase Commitment		Liquidated Damages
2026	615		—
2027	1,101,103		111,619
2028	1,002,324		122,809
2029	455,897		98,839
2030 and thereafter	353,500		$	63,000
Total	$	2,913,439	$	396,267

Schedule of Warranty Liabilities

As of June 30, 2026 and September 30, 2025, the Company accrued the below estimated warranty liabilities, which the table reflects as nine months activity and twelve months activity, respectively:


In thousands	June 30, 2026		September 30, 2025
Warranty balance, beginning	$	51,807	$	40,242
Warranties issued and assumed in period	13,309		22,409
Change in estimates	—		3,173
Net changes in liability for warranty expirations, costs incurred, and foreign exchange impact	(7,641)		(14,017)
Warranty balance, ending	$	57,475	$	51,807
Less: Recoverable warranty costs from suppliers	28,138		23,578
Warranty balance, net of recoverable warranty costs from suppliers, at end of period	$	29,337	$	28,229