Long-Term Debt - Convertible Senior Notes due 2024 - Additional Information (Detail) $ / shares in Units, $ in Millions |
1 Months Ended | 3 Months Ended | |||||
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Mar. 15, 2024
USD ($)
$ / shares
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Mar. 31, 2018
USD ($)
$ / shares
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Mar. 31, 2025
USD ($)
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Mar. 31, 2024
USD ($)
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Dec. 31, 2024
USD ($)
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Aug. 31, 2023
USD ($)
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Dec. 31, 2022
USD ($)
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| Debt Instrument [Line Items] | |||||||
| Outstanding principal amount | $ 2,262.4 | ||||||
| Long-term debt | 2,193.7 | $ 2,260.1 | |||||
| Paid-in capital in excess of par value | 287.9 | 278.2 | |||||
| Retained earnings (accumulated deficit) | (757.6) | $ (808.0) | |||||
| Interest expense | $ 54.6 | $ 41.6 | |||||
| 2.625% Convertible Senior Notes Due 2024 [Member] | |||||||
| Debt Instrument [Line Items] | |||||||
| Aggregate principal amount of senior notes issued | $ 550.0 | $ 65.5 | $ 287.5 | ||||
| Convertible notes, interest rate | 2.625% | ||||||
| Line of credit maturity | Mar. 15, 2024 | Mar. 15, 2024 | |||||
| Convertible notes, conversion feature | On and after December 15, 2023, holders could convert their 2024 Convertible Notes at any time, regardless of the circumstances. In December 2021, the Company made an irrevocable election under the indenture governing the 2024 Convertible Notes to require the principal portion of the 2024 Convertible Notes to be settled in cash and any excess in shares or cash. | ||||||
| Principal amount of convertible notes | $ 1,000.0 | $ 1,000.0 | |||||
| Convertible notes conversion rate | 16.0467 | 16.0056 | |||||
| Convertible notes conversion price | $ / shares | $ 62.32 | $ 62.48 | |||||
| Amortization of deferred financing costs | $ 0.2 | ||||||
| Repayment of debt | $ 197.0 | ||||||
| Accrued interest on debt | $ 2.6 | ||||||
| Interest expense | $ 1.2 | ||||||
| X | ||||||||||
- Definition Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of amortization expense attributable to debt issuance costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The price per share of the conversion feature embedded in the debt instrument. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Description of conversion terms for debt instrument. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of accumulated undistributed earnings (deficit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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