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Long-Term Debt (Tables) | 12 Months Ended
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Dec. 31, 2024
Debt Disclosure [Abstract] |
Long-Term Debt | Long-term debt consisted of the following:
|  | December 31, |  | December 31,
|  | 2024 |  | 2023
Funding program loans from European Investment Bank ("EIB"): |  |  |  |
3.62% due 2028, floating interest rate at Euribor +0.589% |  | 106 |  |  | 141 |
4.19% due 2029, floating interest rate at Euribor +0.564% |  | 127 |  |  | 162 |
3.96% due 2031, floating interest rate at Euribor +0.473% |  | 244 |  |  | 296 |
4.23% due 2031, floating interest rate at Euribor +0.550% |  | 120 |  |  | 146 |
3.21% due 2033, floating interest rate at Euribor +0.558% |  | 281 |  |  | 332 |
6.19% due 2034, floating interest rate at Secured Overnight Financing Rate +0.939% |  | 300 |  |  | — |
Credit Facility from Cassa Depositi e Prestiti SpA ("CDP SpA") |  |  |  |
3.34% due 2027, floating interest rate at Euribor +0.690% |  | 65 |  |  | 97 |
3.91% due 2028, floating interest rate at Euribor +0.550% |  | 69 |  |  | 92 |
4.21% due 2029, floating interest rate at Euribor +0.850% |  | 74 |  |  | 95 |
Dual tranche senior unsecured convertible bonds |  |  |  |
zero-coupon, due 2025 ("Tranche A") |  | 749 |  |  | 748 |
zero-coupon, due 2027 ("Tranche B") |  | 749 |  |  | 748 |
Finance leases: |  |  |  |
3.58% due 2025, fixed interest rate |  | 8 |  |  | — |
3.86% due 2027, fixed interest rate |  | 34 |  |  | 38 |
3.78% due 2042, fixed interest rate |  | 23 |  |  | 25 |
1.75% due 2042, fixed interest rate |  | 1 |  |  | 2 |
Other funding program loans: |  |  |  |
0.26% (weighted average), due 2025-2028, fixed interest rate |  | 3 |  |  | 5 |
Total long-term debt |  | 2,953 |  |  | 2,927 |
Less current portion |  | (990) |  |  | (217) |
Total long-term debt, less current portion |  | 1,963 |  |  | 2,710 |
Long-Term Debt Denominated by Currencies | Long-term debt is denominated in the following currencies:
|  | December 31, 2024 |  | December 31, 2023
U.S. dollar |  | 1,798 |  |  | 1,496 |
Euro |  | 1,155 |  |  | 1,431 |
Total |  | 2,953 |  |  | 2,927 |
Total Long-Term Debt Outstanding Maturities | Aggregate future maturities of total long-term debt (including current portion) at principal amount are as follows:
|  | December 31,
|  | 2024
2025 |  | 990
2026 |  | 228
2027 |  | 964
2028 |  | 223
2029 |  | 154
Thereafter |  | 396
Total |  | 2,955 |

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