Restructuring and Other Charges - Additional Information (Details) $ in Thousands	3 Months Ended			12 Months Ended
	Dec. 31, 2021 USD ($) Employee	Sep. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($) Employee
Restructuring Cost And Reserve [Line Items]
Restructuring and other charges, net	$ (33,991)		$ (247)
Restructuring Charges	(34,144)		(131)
Sublease income	1,117		1,084
Payments for restructuring	9,828		3,420
Professional fees		$ 1,700
Restructuring Plan 2022
Restructuring Cost And Reserve [Line Items]
Payments for restructuring	9,100
Impairment and Accretion Exited Lease Facilities
Restructuring Cost And Reserve [Line Items]
Restructuring and other charges, net			(100)
Sublease income	100
Restructured Facilities | PTC Prior Restructuring
Restructuring Cost And Reserve [Line Items]
Payments for restructuring	700
Employee Severance and Related Benefits
Restructuring Cost And Reserve [Line Items]
Restructuring Charges	(34,072)		(160)
Payments for restructuring	9,145		2,733
Employee Severance and Related Benefits | Restructuring Plan 2022
Restructuring Cost And Reserve [Line Items]
Restructuring Charges	$ (34,100)
Number of employees | Employee	340
Employee Severance and Related Benefits | Restructuring Plan 2022 | Minimum
Restructuring Cost And Reserve [Line Items]
Restructuring Charges	$ (40,000)
Employee Severance and Related Benefits | Restructuring Plan 2022 | Maximum
Restructuring Cost And Reserve [Line Items]
Restructuring Charges	(45,000)
Employee Severance and Related Benefits | Restructuring Plan 2020
Restructuring Cost And Reserve [Line Items]
Restructuring Charges	$ (100)		$ (200)	$ (30,800)
Number of employees | Employee				250