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Debt - Senior Convertible Notes (Details) - Senior Notes - USD ($) | Mar. 31, 2023 | Dec. 31, 2022 | May 31, 2020 | Nov. 30, 2018
--- | --- | --- | --- | ---
Senior Convertible Notes |  |  |  |
Total principal amount | $ 1,982,300,000 | $ 1,982,300,000 |  |
Unamortized debt issuance costs | (10,600,000) | (12,000,000.0) |  |
Carrying amount of senior convertible notes | 1,971,700,000 | 1,970,300,000 |  |
Senior Convertible Notes due 2023 |  |  |  |
Senior Convertible Notes |  |  |  |
Total principal amount | 774,800,000 | 774,800,000 |  | $ 850,000,000
Senior Convertible Notes due 2025 |  |  |  |
Senior Convertible Notes |  |  |  |
Total principal amount | $ 1,207,500,000 | $ 1,207,500,000 | $ 1,210,000,000 |

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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(13)) -URI https://asc.fasb.org/extlink&oid=120401414&loc=d3e603758-122996 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)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
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