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Convertible Debt (Tables) | 3 Months Ended
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Mar. 31, 2021
0% Convertible Senior Notes [Member] |
Convertible Notes [Abstract] |
Convertible Notes | Following the closing of the debt transaction in April 2021, we had the following 0% Notes outstanding (amounts in millions except interest rate and price per share data):
|  | 0% Notes |
Outstanding principal balance |  | $ | 632.5 |
Maturity date |  | April 2026 |
Interest rate |  | 0 percent |
Conversion price per share |  | $ | 57.84 |
Effective conversion price per share with call spread |  | $ | 76.39 |
Total shares of common stock subject to conversion |  |  | 10.9 |
0.125% Convertible Senior Notes [Member] |
Convertible Notes [Abstract] |
Convertible Notes | At March 31, 2021, we had the following 0.125% Notes outstanding with interest payable semi-annually (amounts in millions except interest rate and price per share data):
|  | 0.125% Notes |
Outstanding principal balance |  | $ | 548.8 |
Maturity date |  | December 2024 |
Interest rate |  | 0.125 percent |
Conversion price per share |  | $ | 83.28 |
Effective conversion price per share with call spread |  | $ | 123.38 |
Total shares of common stock subject to conversion |  |  | 6.6 |
Unamortized debt issuance costs |  | $ | 8.1 |
1% Convertible Senior Notes [Member] |
Convertible Notes [Abstract] |
Convertible Notes | At March 31, 2021, we had the following 1% Notes outstanding with interest payable semi-annually (amounts in millions except interest rate and price per share data):
|  | 1% Notes |
Outstanding principal balance |  | $ | 309.9 |
Maturity date |  | November 2021 |
Interest rate |  | 1 percent |
Conversion price per share |  | $ | 66.81 |
Total shares of common stock subject to conversion |  |  | 4.6 |
Unamortized debt issuance costs |  | $ | 0.8 |

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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. + References No definition available. + Details
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- Definition Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder. Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components. + References No definition available. + Details
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