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Borrowings | 3 Months Ended
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Mar. 31, 2025
Debt Disclosure [Abstract] |
Borrowings | Borrowings Convertible Notes In February 2025, we issued an aggregate of $690 million principal amount of 0% Convertible Senior Notes due 2030 (the "2030 Notes"). Proceeds from the issuance of the 2030 Notes were $677 million, net of debt issuance costs and the cash was used to purchase capped call transactions, and repurchase convertible notes as discussed below. The debt issuance costs are amortized to interest expense using the straight-line method, which approximates the effective interest method. As of March 31, 2025, we had $2.2 billion of unsecured convertible notes outstanding including $690 million of the 2030 Notes, $1.0 billion issued in November 2022 (the "2027 Notes"), $558 million issued in November 2021 (the "2026 Notes", together with the 2027 Notes and 2030 Notes, the "Notes"). The table below summarizes the principal and unamortized debt issuance costs and other material features of the Notes (in thousands):
|  |  |  |  |  |  |  |  | Carrying Amount as of
| Conversion Rate per $1,000 Principal |  | Conversion Price (1) |  | Maturities |  | Stated Interest Rates |  | March 31, 2025 |  | December 31, 2024
Convertible notes: |  |  |  |  |  |  |  |  |  |  |
Principal – 2026 Notes | 3.2392 |  |  | $ | 308.72 |  |  | 2026 |  | 0.0% |  | $ | 557,724 |  |  | $ | 1,245,232 |
Principal – 2027 Notes | 20.4526 |  |  | $ | 48.89 |  |  | 2027 |  | 2.0% |  | 1,000,000 |  |  | 1,000,000 |
Principal – 2030 Notes | 27.6656 |  |  | $ | 36.15 |  |  | 2030 |  | 0.0% |  | 690,000 |  |  | — |
Unamortized debt issuance costs, net |  |  |  |  |  |  |  |  | (15,581) |  |  | (6,310) |
Net carrying amount |  |  |  |  |  |  |  |  | $ | 2,232,143 |  |  | $ | 2,238,922 |
1) We entered into capped call transactions in connection with the 2026 and 2030 Notes. The cap price of the capped call transactions relating to the Notes was initially $343.02 and $47.74, respectively, subject to certain adjustments under the terms of the capped call transactions. See below "--Capped Call Transactions." Interest on the Notes is payable semi-annually in arrears. The combined interest expense on the Notes related to regular interest and the amortization of debt issuance cost was $5.9 million for the three months ended March 31, 2025 and $6.0 million for the three months ended March 31, 2024. As of March 31, 2025, the estimated fair value of the 2030 Notes was approximately $624 million. As of March 31, 2025 and December 31, 2024, the estimated fair value of the 2027 Notes was approximately $1.0 billion and $1.0 billion, respectively, and the estimated fair value of the 2026 Notes was approximately $518 million and $1.1 billion, respectively. The fair value of the 2027 Notes was based on a combination of a discounted cash flow and Black-Scholes option-pricing model. The fair value of the 2030 Notes and 2026 Notes was based on quoted prices as of that date. The 2027 Notes may be converted at the election of the holders thereof at any time prior to maturity. The 2026 Notes and 2030 Notes are convertible at the option of the respective holders thereof if a conversion condition applicable to such series of Notes is triggered. During the three months ended March 31, 2025, none of the conversion conditions of the 2026 Notes or the 2030 notes were triggered, and the 2026 Notes and 2030 Notes were not convertible as of March 31, 2025. Any such conversion of the Notes noted above, may be satisfied at our election with either cash, shares of our common stock, or a combination of cash and shares of our common stock. The conversion rates for the Notes are subject to customary adjustments for certain events as described in the relevant indenture governing the Notes. The Notes are subject to additional terms. In connection with certain corporate events, as described in the indentures governing the Notes, we will increase the conversion rate for a holder of the applicable series of Notes who elects to convert those Notes in connection with the event. Additionally, upon the occurrence of certain corporate events and subject to certain exceptions, as described in the indenture governing the applicable series of Notes, holders of those Notes may require us to repurchase all or a portion of their notes at a price equal to 100% of the principal amount to be repurchased, plus any accrued and unpaid interest to date. The 2026 Notes and 2030 Notes are also redeemable at our option if certain conditions are met, as described in the indentures governing the 2026 Notes and 2030 Notes respectively. As of March 31, 2025, no holders of the Notes have exercised the conversion rights, and the if-converted value of the Notes did not exceed the principal amount. Convertible Note Repurchase During the first quarter of 2025, and the first quarter of 2024, the Company repurchased in privately negotiated transactions and extinguished a portion of the 2026 Notes, with a total principal balance of $688 million and $480 million, respectively. The aggregate repurchase price for these notes was $642 million and $415 million, respectively, resulting in pre-tax gains of $42.7 million and $61.4 million, net of the write-off of unamortized issuance costs, respectively. These gains were included in Interest income and other income (expense), net, in the condensed consolidated statement of operations. Capped Call Transactions We entered into capped call transactions (the "Capped Call Transactions"), to reduce the potential dilutive effect of the 2026 Notes (the "2026 Capped Call Transactions"), and 2030 Notes (the "2030 Capped Call Transactions"), in connection with their pricing. The 2026 Capped Call Transactions, and the 2030 Capped Call Transactions, had net costs of $48.1 million and $44.4 million, respectively, with call options totaling approximately 5.6 million and 19.1 million of our common stock, and with expiration dates ranging from September 18, 2026 to November 12, 2026, and January 15, 2030 to March 13, 2030, respectively. The strike price of the 2026 Capped Call Transactions, and the 2030 Capped Call Transactions are $308.72 and $36.15, respectively, and the cap prices are initially $343.02 and $47.74 per share, respectively, subject to adjustments in certain circumstances. The Capped Call Transactions are freestanding and are considered separately exercisable from the 2026 Notes and 2030 Notes. As of March 31, 2025, the Capped Call Transactions met the conditions for equity classification and were not in the money.

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