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Debt | 3 Months Ended
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Mar. 31, 2022
Debt Disclosure [Abstract] |
Debt | Debt 2026 Convertible Senior Notes In August 2021, the Company issued $1,293.8 million aggregate principal amount of the 2026 Notes in a private offering to qualified institutional buyers pursuant to Rule 144A promulgated under the Securities Act, including the initial purchasers’ exercise in full of their option to purchase an additional $168.8 million aggregate principal amounts of the 2026 Notes. The total proceeds from the issuance of the 2026 Notes, net of initial purchaser discounts and commissions and debt issuance costs, were $1,274.0 million. The 2026 Notes are senior unsecured obligations of the Company and will mature on August 15, 2026, unless earlier redeemed, repurchased, or converted, and are governed by the terms of the indenture dated August 13, 2021 (the 2026 Indenture). The 2026 Notes are 0% convertible senior notes and therefore do not bear regular cash interest. The 2026 Notes are convertible at an initial conversion rate of 5.2263 shares of the Company's Class A common stock per $1,000 principal amount of the 2026 Notes, which is equivalent to an initial conversion price of approximately $191.34 per share, subject to adjustment upon the occurrence of specified events in accordance with the terms of the 2026 Indenture. The 2026 Notes may be converted at any time on or after May 15, 2026 until the close of business on the second scheduled trading day immediately preceding the maturity date. Holders of the 2026 Notes may convert all or any portion of their 2026 Notes at their option at any time prior to the close of business on the business day immediately preceding May 15, 2026 only under the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on December 31, 2021 (and only during such calendar quarter), if the last reported sale price of the Company's Class A common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (2) during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2026 Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company's Class A common stock and the conversion rate on each such trading day; (3) if the Company calls such 2026 Notes for redemption, at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or (4) upon the occurrence of specified corporate events. None of the circumstances described in the paragraphs above were met during the first quarter of 2022. In addition, if the 2026 Notes are converted prior to the maturity date following certain specified corporate events or because the Company issues a notice of redemption, the Company will increase the conversion rate for such 2026 Notes converted in connection with such a corporate event or during the related redemption period, as the case may be, in certain circumstances set forth in the 2026 Indenture. Upon conversion, the Company will pay or deliver, as the case may be, cash, shares of the Company's Class A common stock, or a combination of cash and shares of the Company's Class A common stock, at the Company's election. It is the Company’s current intent to settle the principal amount of 2026 Notes in cash. The Company may not redeem the 2026 Notes prior to August 20, 2024. The Company may redeem for cash all or any portion of the 2026 Notes (subject to the partial redemption limitation (as defined below)), at its option, on or after August 20, 2024, if the last reported sale price of the Company’s Class A common stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period (including the last trading day of such period) ending on, and including, the trading day preceding the date on which the Company provides notice of redemption at a redemption price equal to 100% of the principal amount of the 2026 Notes to be redeemed, plus any accrued and unpaid special interest to, but excluding, the redemption date. If the Company elects to redeem fewer than all of the outstanding 2026 Notes, at least $100.0 million aggregate principal amount of 2026 Notes must be outstanding and not subject to redemption as of the relevant redemption date. No sinking fund is provided for the 2026 Notes. If the Company undergoes a fundamental change (as defined in the 2026 Indenture), holders of the 2026 Notes may require the Company to repurchase for cash all or any portion of their notes at a repurchase price equal to 100% of the principal amount of the 2026 Notes to be repurchased, plus accrued and unpaid special interest to, but excluding, the fundamental change repurchase date. Based on the closing price of the Company's Class A common stock of $119.70 on March 31, 2022, the if-converted value of the 2026 Notes does not exceed its principal amount. The remaining life of the 2026 Notes was approximately 53 months as of March 31, 2022. 2026 Capped Call Transactions In connection with the offering of the 2026 Notes, the Company entered into privately-negotiated capped call option transactions (the 2026 Capped Calls) with certain financial institution counterparties. The 2026 Capped Calls each have an initial strike price of approximately $191.34 per share of the Company's Class A common stock, subject to certain adjustments, which corresponds to the initial conversion price of the 2026 Notes. The 2026 Capped Calls each have an initial cap price of approximately $250.94 per share, subject to certain adjustments. The 2026 Capped Calls initially cover, subject to anti-dilution adjustments, approximately 6.8 million shares of the Company's Class A common stock. The 2026 Capped Calls are intended to generally offset potential dilution to the Company's Class A common stock upon conversion of the 2026 Notes and/or offset the potential cash payments that the Company could be required to make in excess of the principal amount upon any conversion, subject to the cap price. The 2026 Capped Calls are subject to either adjustment or termination upon the occurrence of certain specified events affecting the Company, including a merger event, a tender offer, and a nationalization, insolvency, or delisting involving the Company. The 2026 Capped Calls expire in incremental components on each trading date between July 17, 2026 and August 13, 2026. As of March 31, 2022, the terms of the 2026 Capped Calls have not been adjusted. The 2026 Capped Calls are recorded in stockholders' equity and are not accounted for as derivatives. The premium paid for the purchase of the 2026 Capped Calls of $86.3 million was recorded as a reduction to additional paid-in capital on the condensed consolidated balance sheets. 2025 Convertible Senior Notes In May 2020, the Company issued $575.0 million aggregate principal amount of the 2025 Notes in a private offering to qualified institutional buyers pursuant to Rule 144A promulgated under the Securities Act, including t he initial purchasers' exercise in full of their option to purchase an additional $75.0 million aggregate principal amount of the 2025 Notes. The total net proceeds from the issuance of the 2025 Notes, after deducting initial purchaser discounts and debt issuance costs, were $562.5 million. Immediately following the closings of the 2025 Notes Exchange (defined below) and other conversions that have since been completed, $158.4 million in aggregate principal amount of the 2025 Notes remained outstanding as of March 31, 2022. The 2025 Notes are senior unsecured obligations of the Company and will mature on May 15, 2025, unless earlier redeemed, repurchased, or converted, and are governed by the terms of the Indenture dated May 15, 2020 (the 2025 Indenture and, together with the 2026 Indenture, the Indentures). Interest on the 2025 Notes is payable semi-annually in arrears on May 15 and November 15 of each year, beginning on November 15, 2020, at a rate of 0.75% per year. The 2025 Notes are convertible at an initial conversion rate of 26.7187 shares of the Company's Class A common stock per $1,000 principal amount of the 2025 Notes, which is equivalent to an initial conversion price of approximately $37.43 per share, subject to adjustment upon the occurrence of specified events in accordance with the terms of the 2025 Indenture. The 2025 Notes may be converted at any time on or after February 15, 2025 until the close of business on the second scheduled trading day immediately preceding the maturity date. Holders of the 2025 Notes may convert all or any portion of their 2025 Notes at their option at any time prior to the close of business on the business day immediately preceding February 15, 2025 only under the following circumstances: (1) during any calendar quarter (and only during such calendar quarter), if the last reported sale price of the Company's Class A common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (2) during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2025 Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company's Class A common stock and the conversion rate on each such trading day; (3) if the Company calls such 2025 Notes for redemption, at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or (4) upon the occurrence of specified corporate events. The circumstances described in paragraph (1) above were met during the first quarter of 2022 and as a result, the 2025 Notes are convertible at the option of the holder from April 1, 2022 until June 30, 2022. In addition, if the 2025 Notes are converted prior to the maturity date following certain specified corporate events or because the Company issues a notice of redemption, the Company will increase the conversion rate for such 2025 Notes converted in connection with such a corporate event or during the related redemption period, as the case may be, in certain circumstances set forth in the 2025 Indenture. Upon conversion, the Company will pay or deliver, as the case may be, cash, shares of the Company's Class A common stock, or a combination of cash and shares of the Company's Class A common stock, at the Company's election. It is the Company’s current intent to settle the principal amount of 2025 Notes in cash. The Company may not redeem the 2025 Notes prior to May 20, 2023. The Company may redeem for cash all or any portion of the 2025 Notes, at its option, on or after May 20, 2023, if the last reported sale price of the Company’s Class A common stock has been at least 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period (including the last trading day of such period) ending on, and including, the trading day preceding the date on which the Company provides notice of redemption at a redemption price equal to 100% of the principal amount of the 2025 Notes to be redeemed, plus any accrued and unpaid interest to, but excluding, the redemption date. No sinking fund is provided for the 2025 Notes. If the Company undergoes a fundamental change (as defined in the 2025 Indenture), holders of the 2025 Notes may require the Company to repurchase for cash all or any portion of their notes at a repurchase price equal to 100% of the principal amount of the 2025 Notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date. During the three months ended December 31, 2021, certain holders elected to convert approximately $16.6 million aggregate principal amount of the 2025 Notes. The Company elected to settle the conversions in a combination of cash equal to the principal amount of the 2025 Notes converted and the issuance of 298,909 shares of the Company's Class A common stock for the remainder associated with the conversion premium. The difference between the settlement consideration and the carrying value of the 2025 Notes converted was recorded to additional paid-in-capital on the Company's condensed consolidated balance sheets. 2025 Notes Exchange On August 13, 2021, the Company closed privately-negotiated exchange agreements with certain holders of the 2025 Notes to exchange approximately $400.0 million in aggregate principal amount of the 2025 Notes (the 2025 Notes Exchange) for an aggregate of $400.7 million in cash (including accrued interest) and approximately 7.6 million shares of the Company’s Class A common stock (the Exchange Shares) for aggregate consideration of $1,321.0 million. The Company used a portion of the net proceeds from the offering of the 2026 Notes to fund the 2025 Notes Exchange. As a result, the Company recorded a debt extinguishment loss of $72.2 million, representing the difference between the fair value of the liability component of $355.3 million and the carrying value of the 2025 Notes Exchange of $283.1 million at the closing date. The fair value of the liability component was calculated by using an effective interest rate of 4.08%, which was determined by measuring the fair value of similar debt instruments that did not have an associated convertible feature and adjusted to reflect the term of the remaining 2025 Notes. The aggregate consideration of $1,321.0 million was allocated between the fair value of the liability component of $355.3 million and the reacquisition of the equity component of $965.7 million, which was recorded as a reduction to additional paid-in capital and offset by the additional paid-in capital for the Exchange Shares issued. Based on the closing price of the Company's Class A common stock of $119.70 on March 31, 2022, the if-converted value of the 2025 Notes exceeded its principal amount by approximately $348.3 million. The remaining life of the 2025 Notes was approximately 38 months as of March 31, 2022. 2025 Capped Call Transactions In connection with the offering of the 2025 Notes, the Company entered into privately-negotiated capped call option transactions (the 2025 Capped C alls and, together with the 2026 Capped Calls, the capped call transactions) with certain financial institution counterparties. The 2025 Capped Calls each have an initial strike price of approximately $37.43 per share of the Company's Class A common stock, subject to certain adjustments, which corresponds to the initial conversion price of the 2025 Notes. The 2025 Capped Calls each have an initial cap price of $57.58 per share, subject to certain adjustments. The 2025 Capped Calls initially cover, subject to anti-dilution adjustments, approximately 15.4 million shares of the Company's Class A common stock. The 2025 Capped Calls are intended to generally offset potential dilution to the Company's Class A common stock upon conversion of the 2025 Notes and/or offset the potential cash payments that the Company could be required to make in excess of the principal amount upon any conversion, subject to the cap price. The 2025 Capped Calls are subject to either adjustment or termination upon the occurrence of certain specified events affecting the Company, including a merger event, a tender offer, and a nationalization, insolvency, or delisting involving the Company. The 2025 Capped Calls expire in incremental components on each trading date between March 18, 2025 and May 13, 2025. As of March 31, 2022, the terms of the 2025 Capped Calls have not been adjusted and no 2025 Capped Calls were exercised in connection with the 2025 Notes Exchange. As of March 31, 2022, no 2025 Capped Calls were exercised in connection with the 2025 Notes conversion requests. The 2025 Capped Calls are recorded in stockholders' equity and are not accounted for as derivatives. The premium paid for the purchase of the 2025 Capped Calls of $67.3 million was recorded as a reduction to additional paid-in capital on the condensed consolidated balance sheets. The net carrying amounts of the Notes were as follows:
| March 31, 2022 |  | December 31, 2021
| 2026 Notes | 2025 Notes |  | 2026 Notes | 2025 Notes
| (in thousands)
Principal | $ | 1,293,750 |  | $ | 158,429 |  |  | $ | 1,293,750 |  | $ | 175,000 |
Unamortized debt discount(1) | — |  | — |  |  | (248,179) |  | (45,382) |
Unamortized debt issuance costs | (17,316) |  | (2,158) |  |  | (14,541) |  | (1,654) |
Carrying amount, net | $ | 1,276,434 |  | $ | 156,271 |  |  | $ | 1,031,030 |  | $ | 127,964 |
(1)The carrying value of the equity components of the 2025 Notes and 2026 Notes as of December 31, 2021 was eliminated upon the adoption of ASU 2020-06. Refer to Note 2 to these condensed consolidated financial statements. The following table sets forth total interest expense recognized related to the Notes:
| Three Months Ended March 31, |  |
| 2022 |  | 2021 |  |  |  |
| 2026 Notes | 2025 Notes |  | 2026 Notes | 2025 Notes |  |  |  |
| (in thousands)
Coupon interest expense | $ | — |  | $ | 310 |  |  | $ | — |  | $ | 1,078 |  |  |  |  |
Amortization of debt discount(1) | — |  | — |  |  | — |  | 8,568 |  |  |  |  |
Amortization of debt issuance costs | 990 |  | 180 |  |  | — |  | 403 |  |  |  |  |
Total | $ | 990 |  | $ | 490 |  |  | $ | — |  | $ | 10,049 |  |  |  |  |
(1)As a result of the adoption of ASU 2020-06 on January 1, 2022, there is no debt discount associated with either the 2025 Notes or the 2026 Notes. Refer to Note 2 to these condensed consolidated financial statements. Prior to the adoption of ASU 2020-06 on January 1, 2022, the Company separated the Notes into liability and equity components. On issuance of the Notes, the carrying amounts of the equity components were recorded as debt discount and subsequently amortized to interest expense. Upon the adoption of ASU 2020-06, the Company accounts each of the Notes as a single liability measured at its amortized cost. For further details on the adoption of ASU 2020-06, refer to Note 2 to these condensed consolidated financial statements.

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