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v3.22.2.2

Leases - Additional Information (Details) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2022 USD ($) ft² | Mar. 31, 2022 USD ($) | Sep. 30, 2021 USD ($) | Feb. 28, 2019 USD ($)
Lessee Lease Description [Line Items] |  |  |  |
Boston Lease Square Feet | ft² | 250,000 |  |  |
Boston lease year one payments | $ 11,000,000.0 |  |  |
Boston lease per square foot annual increase | 1 |  |  |
Boston lease annual increase | 300,000 |  |  |
Boston lease building operating cost amount estimate year one | 7,100,000 |  |  |
Boston lease leasehold improvement allowance | 25,000,000 |  |  |
Boston lease leasehold improvement allowance per square foot | 100 |  |  |
Future lease payments | 11,600,000 |  |  |
Operating right-of-use lease assets | 137,780,000 |  | $ 152,337,000 |
Operating lease, liability | 189,575,000 |  |  |
Payments to be received as sublease income |  | $ 2,900,000 |  | $ 9,100,000
Lease Cost |  |  |  |
Operating cash flows from operating leases | $ 38,709,000 |  |  |
Minimum |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Leases not yet commenced, Term of contract | 10 years |  |  |
Facility Closures and Related Costs |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Operating lease liability, net. restructured facilities | $ 300,000 |  | $ 3,600,000 |
Lease Cost |  |  |  |
Operating cash flows from operating leases | 2,000,000.0 |  |  |
Facility Closures and Related Costs | Prior Headquarters |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Operating lease, impairment loss | 1,300,000 |  |  |
Sublease Income Committed |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Sublease income assumed | 0 |  |  |
Sublease Income Estimated Uncommitted |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Sublease income assumed | $ 0 |  |  |

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