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Debt - Additional Information (Details) - Convertible Senior Notes Due 2027 - USD ($) $ / shares in Units, $ in Millions | 2 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2020 | Mar. 31, 2021 | Mar. 31, 2021 | Mar. 31, 2022
Debt |  |  |  |
Face amount | $ 420.0 |  |  |
Interest rate (as percent) | 1.125% |  |  |
Net proceeds | $ 408.6 |  |  |
Interest expense |  | $ 1.2 | $ 2.8 |
Carrying amount of the liability component | $ 294.6 |  |  |
Discount rate (as percent) | 6.50% |  |  |
Fair value of the liability component | $ 125.4 |  |  |
Debt issuance costs | $ 11.4 |  |  |
Accretion of debt discount |  | 3.6 | 8.3 |
Amortization of debt issuance costs |  | $ 0.2 | $ 0.4 |
Effective interest percentage (as percent) |  | 6.40% | 6.40% |
Period prior to maturity date where noteholders may convert their notes at their election prior to the maturity date | 2 days |  |  |
Conversion rate | 18.9109 |  |  |
Conversion price (in dollars per share) | $ 52.88 |  |  |
Upper strike price (in dollars per share) | $ 86.174 |  |  |
Capped call transaction | $ 60.4 |  |  |
Forecast |  |  |  |
Debt |  |  |  |
Accretion of debt discount |  |  |  | $ 15.2
Amortization of debt issuance costs |  |  |  | $ 0.8

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- Definition Represents the upper strike price of the capped call transaction entered in connection with the convertible debt instrument. + References No definition available. + Details
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- Definition Period prior to the maturity date in which the noteholders may convert their notes at their election after the threshold date. + References No definition available. + Details
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- Definition Represents the discount rate on debt instrument. + References No definition available. + Details
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- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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- Definition The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
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