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v3.20.2

Debt - Narrative (Details) $ / shares in Units, shares in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
May 31, 2020 USD ($) $ / shares | Jun. 30, 2020 USD ($) $ / shares shares | Jun. 30, 2020 USD ($) day $ / shares shares | Jun. 30, 2019 USD ($)
Debt Instrument [Line Items] |  |  |  |
Gross proceeds from issuance of convertible senior notes | $ 562,500,000 |  | $ 575,000,000 | $ 0
Convertible debt, conversion ratio |  |  | 0.0267187 |
Conversion price (in dollars per share) | $ / shares |  | $ 37.43 | $ 37.43 |
Convertible debt, equity component | $ 205,300,000 | $ 200,812,000 | $ 200,812,000 |
Issuance cost, equity component |  | $ 4,478,000 | 4,478,000 |
Issuance cost, equity component |  |  | $ 0 | $ 969,000
Remaining life |  |  | 59 months |
Shares covered by capped calls (in shares) | shares |  | 15.4 | 15.4 |
Purchases of capped calls related to convertible senior notes |  | $ 67,333,000 | $ 67,333,000 |
Class A common stock |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Capped call, initial strike price (in dollars per share) | $ / shares | $ 37.43 |  |  |
Capped call, initial cap price (in dollars per share) | $ / shares | $ 57.58 |  |  |
Convertible Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt principal amount | $ 575,000,000.0 |  |  |
Face amount, additional principal issuable | $ 75,000,000.0 |  |  |
Interest rate | 0.75% | 0.75% | 0.75% |
Issuance cost, liability component | $ 8,000,000.0 |  |  |
Issuance cost, equity component | $ 4,500,000 |  |  |
Measurement Input, Effective Interest Rate | Convertible Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Measurement input |  | 0.100 | 0.100 |
Scenario One, Prior to February 14, 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Conversion requirement, threshold trading days | day |  |  | 20 |
Conversion requirement, threshold consecutive trading days | day |  |  | 30 |
Conversion requirement, threshold percentage of stock price trigger |  |  | 130.00% |
Scenario Two, Prior to February 14, 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Conversion requirement, threshold consecutive trading days | day |  |  | 5 |
Conversion requirement, threshold percentage of stock price trigger |  |  | 98.00% |
Conversion requirement, threshold business days following consecutive trading days | day |  |  | 5 |
Scenario Three, Subsequent to May 20, 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Conversion requirement, threshold trading days | day |  |  | 20 |
Conversion requirement, threshold consecutive trading days | day |  |  | 30 |
Scenario Three, Subsequent to May 20, 2023 | Convertible Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Conversion requirement, threshold percentage of stock price trigger |  |  | 130.00% |
Redemption price, percentage |  |  | 100.00% |
Scenario Four, Fundamental Change | Convertible Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Redemption price, percentage |  |  | 100.00% |

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