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Convertible Senior Notes | 12 Months Ended
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Dec. 31, 2021
Convertible Debt [Abstract] |
Convertible Senior Notes | 6. Convertible Senior Notes In December 2021, the Company issued $1.1 billion aggregate principal amount of 0% convertible senior notes due 2027 (the “2027 Notes”), including the exercise in full of the initial purchasers’ option to purchase up to an additional $100.0 million principal amount of the 2027 Notes, in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act. The 2027 Notes are general unsecured obligations of the Company and will mature on January 15, 2027, unless earlier converted, redeemed, or repurchased. The 2027 Notes do not bear regular interest, and the principal amount of the 2027 Notes will not accrete. Special interest, if any, will be payable semiannually in arrears on January 15 and July 15 of each year, beginning on July 15, 2022 (if and to the extent that special interest is then payable on the 2027 Notes). The total net proceeds from the offering, after deducting initial purchasers’ discounts and debt issuance costs, were $1,080.5 million. The initial conversion rate is 9.9936 shares of the Company’s Class A common stock per $1,000 principal amount of 2027 Notes (equivalent to an initial conversion price of approximately $100.06 per share of the Company’s Class A common stock), subject to adjustment as set forth in the indenture governing the 2027 Notes (the “Indenture”). The 2027 Notes are convertible at the option of the holders at any time prior to the close of business on the business day immediately preceding October 15, 2026, only under the following conditions: (1) during any calendar quarter commencing after the calendar quarter ending on March 31, 2022 (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 for the 2027 Notes on each applicable trading day; (2) during the five business day period after any ten consecutive trading day period (the “measurement period”) in which the trading price per $1,000 principal amount of the 2027 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 for the 2027 Notes on each such trading day; (3) if the Company calls such 2027 Notes for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date, but only with respect to the 2027 Notes called (or deemed called) for redemption; or (4) upon the occurrence of specified corporate events as set forth in the Indenture. On or after October 15, 2026, until the close of business on the second scheduled trading day immediately preceding the maturity date, holders of the 2027 Notes may convert all or any portion of their 2027 Notes at any time, at the option of the holder regardless of the foregoing conditions. Upon conversion, the Company may satisfy its conversion obligation by paying or delivering, as the case may be, cash, shares of Class A common stock or a combination of cash and shares of Class A common stock, at the Company’s election, in the manner and subject to the terms and conditions provided in the Indenture. In addition, following certain corporate events that occur prior to the maturity date of the 2027 Notes or if the Company delivers a notice of redemption in respect of the 2027 Notes, the Company will, under certain circumstances, increase the conversion rate of the 2027 Notes for a holder who elects to convert its 2027 Notes in connection with such a corporate event or convert its 2027 Notes called (or deemed called) for redemption in connection with such notice of redemption, as the case may be. During the year ended December 31, 2021, the conditions allowing holders of the 2027 Notes to convert have not been met. The 2027 Notes were therefore not convertible during the year ended December 31, 2021 and were classified as long-term debt on the Company’s consolidated balance sheets. The Company may not redeem the 2027 Notes prior to January 20, 2025. The Company may redeem for cash all or any portion of the 2027 Notes (subject to the certain limitations described in the Indenture), at its option, on or after January 20, 2025, if the last reported sale price of the Company’s Class A common stock has been at least 130% of the conversion price for the 2027 Notes 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 immediately preceding the date on which the Company provides notice of redemption at a redemption price equal to 100% of the principal amount of the 2027 Notes to be redeemed, plus accrued and unpaid special interest, if any, to, but excluding, the redemption date. If the Company redeems less than all of the outstanding 2027 Notes, at least $100.0 million aggregate principal amount of 2027 Notes must be outstanding and not subject to redemption as of, and after giving effect to, delivery of the relevant notice of redemption. No sinking fund is provided for the 2027 Notes. The Company incurred $19.5 million of debt issuance costs related to the 2027 Notes. These costs are amortized to interest expense included within other income (expense), net on the consolidated statement of operations over the contractual term of the 2027 Notes at an effective interest rate of 0.35%. Amortization of debt issuance costs for the year ended December 31, 2021 was $0.2 million. The net carrying amount of the 2027 Notes was as follows (in thousands):
|  | December 31, 2021 |
Principal |  | $ | 1,100,000 |
Unamortized debt issuance costs |  |  | (19,299 | )
Net carrying amount |  | $ | 1,080,701 |
Capped Calls In connection with the pricing of the 2027 Notes and the exercise in full by the initial purchasers of their option to purchase additional 2027 Notes, the Company entered into capped call transactions with certain of the initial purchasers of the 2027 Notes or their respective affiliates and other financial institutions (the “Capped Calls”). The Capped Calls each have an initial strike price of approximately $100.06 per share, subject to certain adjustments, which corresponds to the initial conversion price of the 2027 Notes. The Capped Calls have initial cap prices of $138.02 per share, subject to certain adjustments. The Capped Calls associated with the 2027 Notes cover, subject to anti-dilution adjustments, approximately 11.0 million shares of the Company’s Class A common stock. The Capped Calls are expected generally to reduce the potential dilution to the Company’s Class A common stock upon any conversion of the 2027 Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of converted 2027 Notes, as the case may be, with such reduction and/or offset subject to a cap based on the cap price. For accounting purposes, the Capped Calls are separate transactions and not part of the terms of the 2027 Notes. As these transactions meet certain accounting criteria, the Capped Calls are recorded in stockholders’ equity and are not accounted for as derivatives. The cost of $91.0 million incurred to purchase the Capped Calls was recorded as a reduction to additional paid-in capital and will not be remeasured.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1I -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1I -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(c)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1C -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1E -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1I -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 + Details
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