Derivative Financial Instruments (Tables)

12 Months Ended

Sep. 30, 2025

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The following table shows our derivative instruments measured at gross fair value as reflected in the Consolidated Balance Sheets:

(in thousands)	Fair Value of Derivatives Designated As Hedging Instruments				Fair Value of Derivatives Not Designated As Hedging Instruments
	September 30,
	2025		2024		2025		2024
Derivative assets:(1)
Forward contracts	$	2,871	$	181	$	3,136	$	1,021
Option contracts	$	—	$	—	$	6,228	$	—
Derivative liabilities:(2)
Forward contracts	$	—	$	630	$	4,773	$	3,536

(1)As of September 30, 2025 and 2024, current derivative assets are recorded in Other current assets on the Consolidated Balance Sheets.

As of September 30, 2025 and 2024, current derivative liabilities are recorded in Accrued expenses and other current liabilities on the Consolidated Balance Sheets.

Schedule of Notional Amounts of Outstanding Forward and Options Contracts

As of September 30, 2025 and 2024, we had outstanding forward and option contracts not designated as hedging instruments with notional amounts equivalent to the following:

	September 30,
Currency Hedged (in thousands)	2025		2024
Euro / U.S. Dollar(1)	$	1,202,830	$	781,398
British Pound / U.S. Dollar		22,974		24,810
Israeli Shekel / U.S. Dollar		20,094		12,535
Indian Rupee / U.S. Dollar		53,465		—
Japanese Yen / U.S. Dollar(2)		131,284		42,340
Swiss Franc / U.S. Dollar		8,960		74,939
Swedish Krona / U.S. Dollar		21,568		48,596
Chinese Renminbi / U.S. Dollar		7,134		32,124
New Taiwan Dollar / U.S. Dollar		23,098		16,368
All other		26,679		25,368
Total	$	1,518,086	$	1,058,478

(1)As of September 30, 2025, $835.4 million of the Euro to U.S. Dollar outstanding notional amount relates to forward contracts and $367.4 million relates to option contracts. As of September 30, 2024, all the Euro to U.S. Dollar outstanding notional amount relates to forward contracts.

(2)As of September 30, 2025, $41.9 million of the Japanese Yen to U.S. Dollar outstanding notional amount relates to forward contracts and $89.4 million relates to option contracts. As of September 30, 2024, all the Japanese Yen to U.S. Dollar outstanding notional amount relates to forward contracts.

As of September 30, 2025 and 2024, we had outstanding forward contracts designated as net investment hedges with notional amounts equivalent to the following:

	September 30,
Currency Hedged (in thousands)	2025		2024
Euro / U.S. Dollar	$	480,198	$	462,894
Japanese Yen / U.S. Dollar		10,260		10,739
Total	$	490,458	$	473,633

Schedule of Net Gains and Losses on Foreign Currency Exposures

The following table shows the effect of our non-designated hedges on the Consolidated Statements of Operations for the years ended September 30, 2025, 2024 and 2023:

(in thousands)		Year ended September 30,
	Location of Gain (Loss)	2025			2024			2023
Net realized and unrealized loss, excluding the underlying foreign currency exposure being hedged	Other income, net	$	(5,204	)	$	(6,238	)	$	(11,757	)

In 2025, 2024, and 2023,

The following table shows the effect of our derivative instruments designated as net investment hedges on the Consolidated Statements of Operations for the years ended September 30, 2025, 2024, and 2023:

(in thousands)		Year ended September 30,
	Location of Gain (Loss)	2025			2024			2023
Loss recognized in Other comprehensive income ("OCI")	OCI	$	(23,684	)	$	(21,643	)	$	(10,033	)
Gain (loss) reclassified from OCI to earnings	n/a	$	—		$	—		$	—
Gain recognized, excluded portion	Other income, net	$	6,251		$	4,346		$	4,241

Schedule of Offsetting Assets

The following table sets forth the offsetting of derivative assets as of September 30, 2025:

(in thousands)	Gross Amounts Offset in the Consolidated Balance Sheets						Gross Amounts Not Offset in the Consolidated Balance Sheets
As of September 30, 2025	Gross Amount of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets		Financial Instruments			Cash Collateral Received		Net Amount
Foreign exchange contracts	$	12,235	$	—	$	12,235	$	(4,773	)	$	—	$	7,462

Schedule of Offsetting Liabilities

The following table sets forth the offsetting of derivative liabilities as of September 30, 2025:

(in thousands)	Gross Amounts Offset in the Consolidated Balance Sheets						Gross Amounts Not Offset in the Consolidated Balance Sheets
As of September 30, 2025	Gross Amount of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets		Financial Instruments			Cash Collateral Pledged		Net Amount
Foreign exchange contracts	$	4,773	$	—	$	4,773	$	(4,773	)	$	—	$	—