Restructuring and Synergy and Site Consolidation Plans - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	May 20, 2023
Restructuring Cost and Reserve [Line Items]
Non-cash restructuring charges	$ 3,018	$ 0
Restructuring accruals	319	$ 0
May 2023 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Non-cash restructuring charges	3,000		$ 119,000
Reimbursement arrangements	65,000
Restructuring accrual	58,499		64,379
Restructuring, reimbursement receivable	20,000
Restructuring accruals	3,018
May 2023 Restructuring Plan | Networking
Restructuring Cost and Reserve [Line Items]
Non-cash restructuring charges	(2,000)
May 2023 Restructuring Plan | Materials
Restructuring Cost and Reserve [Line Items]
Non-cash restructuring charges	5,000
May 2023 Restructuring Plan | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring accrual	58,499		64,379
Restructuring accruals	2,050
May 2023 Restructuring Plan | Employee Severance | Other Accrued Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring accrual	21,000
May 2023 Restructuring Plan | Employee Severance | Other Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring accrual	37,000
Synergy and Site Consolidation Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and other non-recurring costs				$ 250,000
Restructuring accruals	8,000		$ 20,000
Synergy and Site Consolidation Plan | Cost of Goods Sold
Restructuring Cost and Reserve [Line Items]
Restructuring accruals	6,000
Synergy and Site Consolidation Plan | Internal Research and Development
Restructuring Cost and Reserve [Line Items]
Restructuring accruals	2,000
Synergy and Site Consolidation Plan | Employee Severance | Other Accrued Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring accrual	5,000
Synergy and Site Consolidation Plan | Employee Severance | Other Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring accrual	$ 5,000