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Debt | 6 Months Ended
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Jun. 30, 2024
Debt Disclosure [Abstract] |
Debt | Debt Revolving credit facility In February 2018, the Company entered into an amendment to the revolving credit facility to, among other things, permit the Company to make certain investments, enter into an unsecured standby letter of credit facility and increase its standby letter of credit sublimit to $187.5 million. The Company increased its borrowing capacity under the revolving credit facility from $600.0 million to $725.0 million. In February 2021, the Company amended the revolving credit facility to decrease its borrowing capacity under the revolving credit facility from $725.0 million to $500.0 million, the letter of credit sublimit from $187.5 million to $65.0 million and extended the term of the agreement through February 2026. The Company may from time-to-time request increases in its borrowing capacity under the revolving credit facility of up to $250.0 million, provided no event of default has occurred or is continuing or would result from such increase. In conjunction with the February 2021 amendment, the Company paid upfront issuance fees of $1.7 million, which are being amortized over the remaining term of the agreement, and wrote-off $0.2 million in unamortized deferred debt issuance costs. In March 2023, the Company amended the revolving credit facility to update its borrowing benchmark from LIBOR to SOFR, with a fixed credit spread adjustment of 0.10%. In conjunction with the March 2023 amendment, the Company incurred upfront issuance fees of $0.1 million, which are being amortized over the remaining term of the agreement. Pursuant to the terms of the revolving credit facility, the Company may issue letters of credit under the revolving credit facility, which reduce the total amount available for borrowing. Pursuant to the terms of the revolving credit facility, the Company is required to pay an annual commitment fee that accrues at a rate of 0.20% per annum on the unused portion of the borrowing commitments under the revolving credit facility. In addition, the Company is required to pay a fee in connection with letters of credit issued under the revolving credit facility, which accrues at a rate of 1.375% per annum on the amount of such letters of credit outstanding. There is an additional fronting fee of 0.125% per annum multiplied by the average aggregate daily maximum amount available under all letters of credit. Borrowings under the revolving credit facility bear interest, at the Company’s option, at an annual rate based on credit spread adjusted SOFR plus a spread of 1.375% or at an alternative base rate plus a spread of 0.375%. The revolving credit facility contains customary conditions to borrowing, events of default and covenants, including covenants that restrict the Company’s ability to incur indebtedness, grant liens, make distributions to holders of the Company or its subsidiaries’ equity interests, make investments, or engage in transactions with its affiliates. In addition, the revolving credit facility contains financial covenants, including a consolidated leverage ratio incurrence covenant and a minimum liquidity balance of $100.0 million, which includes any available borrowing capacity. The Company was in compliance with the covenants of the revolving credit facility as of June 30, 2024 and December 31, 2023, respectively. The Company had an aggregate of $30.4 million of letters of credit outstanding under the revolving credit facility as of June 30, 2024, and the Company’s total available borrowing capacity under the revolving credit facility was $469.6 million as of June 30, 2024. The Company’s letters of credit have final expiration dates through 2036. Convertible senior notes During the first quarter of 2021, the Company issued $695.8 million aggregate principal amount of the 2026 Notes. Additionally, during the first quarter of 2021, the Company issued $693.3 million aggregate principal amount of the 2028 Notes. The Notes were issued in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933. The net proceeds from the sale of the Notes were approximately $1.4 billion after deducting offering and issuance costs related to the Notes. The Notes of each series do not bear regular interest. The Notes of each series may bear special interest as the remedy relating to the Company’s failure to comply with certain of its reporting obligations. The Company has complied with these reporting obligations from the issuance date through June 30, 2024. The 2026 Notes will mature on March 1, 2026, and the 2028 Notes will mature on March 1, 2028, in each case, unless earlier converted, redeemed or repurchased. The initial conversion rate for the 2026 Notes is 26.1458 shares of the Company’s Class A common stock per $1,000 principal amount of such Note, which is equivalent to an initial conversion price of approximately $38.25 per share. The initial conversion rate for the 2028 Notes is 28.2889 shares of Class A common stock per $1,000 principal amount of such Notes, which is equivalent to an initial conversion price of approximately $35.35 per share. The conversion rate for each series of Notes will be subject to adjustment upon the occurrence of certain specified events but will not be adjusted for accrued and unpaid special interest. In addition, upon the occurrence of a make-whole fundamental change (as defined in the relevant indentures governing the Notes) or a notice of redemption, the Company will, in certain circumstances, increase the conversion rate of the relevant series of Notes by a number of additional shares for a holder that elects to convert all or a portion of its Notes of such series in connection with such make-whole fundamental change or who elects to convert such Notes that are subject to such notice of redemption. The conversion rate for the 2026 Notes and the 2028 Notes shall not exceed 43.1406 shares per $1,000 principal amount of such Notes, subject to certain customary anti-dilution adjustments (as defined in the relevant indentures governing the Notes). There have been no changes to the initial conversion price of the Notes since issuance as of June 30, 2024. Upon conversion, the principal portion of the Notes of the applicable series being converted will be settled in cash, and any amount in excess of the principal portion of such Notes will be settled in cash or shares of the Company’s Class A common stock or any combination thereof at the Company’s option. The if-converted value of the 2026 Notes and the 2028 Notes was below the principal value of the respective Notes as of June 30, 2024. In addition, during the three and six months ended June 30, 2024 the conditions allowing holders of the Notes to convert during the following fiscal quarter were not met. Prior to the close of business on the business day immediately preceding December 1, 2025, in the case of the 2026 Notes, and prior to the close of business on the business day immediately preceding December 1, 2027, in the case of the 2028 Notes, the Notes of the applicable series will be convertible only under the following circumstances: (1) during any calendar quarter commencing after June 30, 2021 (and only during such calendar quarter), if the last reported sale price of the Class A common stock for at least 20 trading days (whether or not consecutive) during the 30 consecutive trading day period ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price for the relevant series of Notes on each applicable trading day; (2) during the five business day period after any five consecutive trading day period in which, for each trading day of that period, the trading price per $1,000 principal amount of 2026 Notes or 2028 Notes, as applicable, for such trading day was less than 98% of the product of the last reported sale price of the Class A common stock and the conversion rate for such series of Notes on each such trading day; (3) if the Company calls any or all of the Notes for redemption, such Notes of the applicable series called for redemption may be converted 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 transactions. On or after December 1, 2025, in the case of the 2026 Notes, and on or after December 1, 2027, in the case of the 2028 Notes, until the close of business on the second scheduled trading day immediately preceding the relevant maturity date, holders of the relevant series of Notes may convert all or a portion of their Notes of such series regardless of the foregoing conditions. The Company may redeem for cash all or any part of the Notes, at its option, on or after March 6, 2024, in the case of the 2026 Notes, and on or after March 6, 2025, in the case of the 2028 Notes, if the last reported sale price of its Class A common stock has been at least 130% of the conversion price for the relevant series of 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 series of Notes to be redeemed, plus any accrued and unpaid special interest to, but excluding, the redemption date. No sinking fund is provided for the Notes. Upon the occurrence of a fundamental change (as defined in the relevant indentures governing the Notes) prior to the relevant maturity date, holders of the relevant series of Notes may require the Company to repurchase all or a portion of the Notes of such series for cash at a price equal to 100% of the principal amount of the series of Notes to be repurchased, plus any accrued and unpaid special interest to, but excluding, the fundamental change repurchase date. Additionally, and upon events of default (as defined in the relevant indentures governing the Notes), the maturity of the Notes may be accelerated. The Notes are the Company’s general unsecured obligations and will rank senior in right of payment to any existing and future indebtedness that is contractually subordinated to the Notes; rank equal in right of payment with the Company’s existing and future senior unsecured indebtedness that is not so subordinated; effectively rank junior in right of payment to any of the Company’s existing and future secured indebtedness to the extent of the value of the assets securing such indebtedness; and be structurally subordinated to all indebtedness and other liabilities (including trade payables) of subsidiaries of the Company. In accounting for the Notes, issuance costs of $11.0 million and $11.0 million for the 2026 Notes and the 2028 Notes, respectively, were deducted from the carrying value of the Notes in the consolidated balance sheet. Issuance costs will be recognized as interest expense over the five-year term and seven-year term for the 2026 Notes and the 2028 Notes, respectively. The following is a summary of the Notes as of June 30, 2024 and December 31, 2023.
| 2026 Notes |  | 2028 Notes |  | Total
June 30, 2024 |  |  |  |  |
Principal balance | $ | 695.8 |  |  | $ | 693.3 |  |  | $ | 1,389.1 |
Unamortized issuance costs | (3.7) |  |  | (5.7) |  |  | (9.4) |
Carrying value, net | $ | 692.1 |  |  | $ | 687.6 |  |  | $ | 1,379.7 |
December 31, 2023 |  |  |  |  |
Principal balance | $ | 695.8 |  |  | $ | 693.3 |  |  | $ | 1,389.1 |
Unamortized issuance costs | (4.8) |  |  | (6.5) |  |  | (11.3) |
Carrying value, net | $ | 691.0 |  |  | $ | 686.8 |  |  | $ | 1,377.8 |
During the three months ended June 30, 2024 and 2023, the Company recognized $0.6 million and $0.5 million in interest expense for the 2026 Notes and $0.4 million and $0.4 million in interest expense for the 2028 Notes, respectively, with such interest expense solely consisting of amortization of issuance costs. During the six months ended June 30, 2024 and 2023, the Company recognized $1.1 million and $1.1 million in interest expense for the 2026 Notes and $0.8 million and $0.8 million in interest expense for the 2028 Notes, respectively, with such interest expense solely consisting of amortization of issuance costs. The effective interest rate for the 2026 Notes and the 2028 Notes was 0.32% and 0.22%, respectively, as of June 30, 2024. Maturities on the Company's long-term convertible debt are as follows:
| Convertible Debt
Remainder of 2024 | $ | — |
2025 | — |
2026 | 695.8 |
2027 | — |
2028 | 693.3 |
2029 | — |
Thereafter | — |
Total | $ | 1,389.1 |
Convertible Note Hedges and Warrants Concurrent with the offering of the Notes, the Company entered into convertible note hedge transactions with certain counterparties whereby the Company had the option to purchase a total of approximately 18.2 million shares for note hedges expiring in March 2026 (the “2026 Note Hedges”) and 19.6 million shares for note hedges expiring in March 2028 (the “2028 Note Hedges”, together with the 2026 Note Hedges, the “Note Hedges”), respectively, of its Class A common stock at a price of approximately $38.25 and $35.35 per share, respectively. The aggregate cost of the convertible note hedge transactions was $265.3 million. The Note Hedges, or a portion thereof, are exercisable upon conversion of the Notes and the satisfaction of certain conditions set forth in the Note Hedges. Additionally, the Note Hedges may be terminated and early settled upon the occurrence of certain events, including certain merger events, events of default, and upon a fundamental change (as defined in the relevant indentures for the Notes). The Note Hedges are settleable in cash, shares or a combination of cash and shares, at the option of the Company, and the settlement alternative will be the same as the settlement alternative of the conversion spread for the respective Notes. The convertible note hedge transactions are expected generally to reduce the potential dilution to the Class A common stock upon conversion of the relevant series of Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of such converted Notes, as the case may be, in the event that the market price per share of the Class A common stock, as measured under the terms of the convertible note hedge transactions, is greater than the applicable strike price of those convertible note hedge transactions. As of June 30, 2024, the Company’s stock price was below the exercise price of the respective Note Hedges. In addition, the Company sold warrants to certain counterparties whereby the holders of the warrants had the option to purchase a total of approximately 18.1 million shares of Class A common stock underlying such warrants expiring in 2026 (the “2026 Warrants”) and 20.1 million shares of Class A common stock underlying such warrants expiring in 2028 (the “2028 Warrants”, together with the 2026 Warrants, the “Warrants”), respectively, at an initial strike price of $46.36 and $46.36 per share, respectively. The Company received aggregate cash proceeds of $202.9 million from the sale of these Warrants. If the market price per share of the Company’s Class A common stock, as measured under the terms of the Warrants, exceeds the strike price of the Warrants, the Warrants could have a dilutive effect, unless the Company elects, subject to certain conditions, to settle the Warrants in cash. The Warrants are only exercisable on the applicable expiration dates in accordance with the terms of the Warrants. Subject to the other terms of the Warrants, the first expiration date applicable to the 2026 Warrants and to the 2028 Warrants is June 1, 2026, and June 1, 2028, respectively, and the final expiration date applicable to the 2026 Warrants and 2028 Warrants is August 10, 2026 and August 10, 2028, respectively. As of June 30, 2024, the Company’s Class A common stock price was below the exercise price of the Warrants. Taken together, the purchase of the Note Hedges and the sale of the Warrants are intended to reduce potential dilution from the conversion of the 2026 Notes and the 2028 Notes, and to effectively increase the overall conversion price from $38.25 per share to $46.36 per share and from $35.35 per share to $46.36 for the 2026 Notes and the 2028 Notes, respectively. The Note Hedges and the Warrants are equity-classified instruments as a result of being indexed to the Company’s Class A common stock and meeting certain equity classification criteria, and the instruments will not be remeasured in subsequent periods as long as the instruments continue to meet these accounting criteria. The premium paid for the Note Hedges has been included as a net reduction to additional paid-in capital within stockholders’ deficit, and the premium received for the Warrants has been included as a net increase to additional paid-in capital within stockholders' deficit.

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