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Debt (Tables) | 9 Months Ended
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Sep. 30, 2018
Debt |
Debt, net of unamortized discounts, premiums and fair value adjustments | The aggregate principal amounts and aggregate carrying amounts, net of debt‑related balances, including unamortized discounts, premiums, issue costs and fair value adjustments of our debt, were as follows (in millions):
|  | Principal amount |  |  | Carrying amount |
|  | September 30, |  | December 31, |  |  | September 30, |  | December 31, |
|  | 2018 |  | 2017 |  |  | 2018 |  | 2017 |
Eksportfinans Loan due January 2018 |  | $ | — |  | $ | 26 |  |  | $ | — |  | $ | 26 |
6.50% Senior Notes due November 2020 |  |  | 286 |  |  | 286 |  |  |  | 288 |  |  | 288 |
6.375% Senior Notes due December 2021 |  |  | 328 |  |  | 328 |  |  |  | 327 |  |  | 327 |
5.52% Senior Secured Notes due May 2022 |  |  | 303 |  |  | 362 |  |  |  | 299 |  |  | 356 |
3.80% Senior Notes due October 2022 |  |  | 411 |  |  | 506 |  |  |  | 408 |  |  | 502 |
0.50% Exchangeable Bonds due January 2023 |  |  | 863 |  |  | — |  |  |  | 862 |  |  | — |
9.00% Senior Notes due July 2023 |  |  | 1,250 |  |  | 1,250 |  |  |  | 1,220 |  |  | 1,216 |
5.875% Senior Secured Notes due January 2024 |  |  | 750 |  |  | — |  |  |  | 734 |  |  | — |
7.75% Senior Secured Notes due October 2024 |  |  | 510 |  |  | 540 |  |  |  | 498 |  |  | 526 |
6.25% Senior Secured Notes due December 2024 |  |  | 531 |  |  | 562 |  |  |  | 520 |  |  | 549 |
6.125% Senior Secured Notes due August 2025 |  |  | 600 |  |  | — |  |  |  | 587 |  |  | — |
7.50% Senior Notes due January 2026 |  |  | 750 |  |  | 750 |  |  |  | 742 |  |  | 742 |
7.45% Notes due April 2027 |  |  | 88 |  |  | 88 |  |  |  | 86 |  |  | 86 |
8.00% Debentures due April 2027 |  |  | 57 |  |  | 57 |  |  |  | 57 |  |  | 57 |
7.00% Notes due June 2028 |  |  | 300 |  |  | 300 |  |  |  | 307 |  |  | 307 |
Capital lease contract due August 2029 |  |  | 519 |  |  | 541 |  |  |  | 519 |  |  | 541 |
7.50% Notes due April 2031 |  |  | 588 |  |  | 588 |  |  |  | 585 |  |  | 585 |
6.80% Senior Notes due March 2038 |  |  | 1,000 |  |  | 1,000 |  |  |  | 991 |  |  | 991 |
7.35% Senior Notes due December 2041 |  |  | 300 |  |  | 300 |  |  |  | 297 |  |  | 297 |
Total debt |  |  | 9,434 |  |  | 7,484 |  |  |  | 9,327 |  |  | 7,396 |
Less debt due within one year |  |  |  |  |  |  |  |  |  |  |  |  |  |
Eksportfinans Loan due January 2018 |  |  | — |  |  | 26 |  |  |  | — |  |  | 26 |
5.52% Senior Secured Notes due May 2022 |  |  | 83 |  |  | 79 |  |  |  | 81 |  |  | 77 |
5.875% Senior Secured Notes due January 2024 |  |  | 83 |  |  | — |  |  |  | 79 |  |  | — |
7.75% Senior Secured Notes due October 2024 |  |  | 60 |  |  | 60 |  |  |  | 58 |  |  | 57 |
6.25% Senior Secured Notes due December 2024 |  |  | 62 |  |  | 62 |  |  |  | 60 |  |  | 60 |
6.125% Senior Secured Notes due August 2025 |  |  | 66 |  |  | — |  |  |  | 63 |  |  | — |
Capital lease contract due August 2029 |  |  | 31 |  |  | 30 |  |  |  | 31 |  |  | 30 |
Total debt due within one year |  |  | 385 |  |  | 257 |  |  |  | 372 |  |  | 250 |
Total long-term debt |  | $ | 9,049 |  | $ | 7,227 |  |  | $ | 8,955 |  | $ | 7,146 |
Scheduled maturities of debt |
|  | Total |
Twelve months ending September 30, |  |  |  |
2019 |  | $ | 385 |
2020 |  |  | 392 |
2021 |  |  | 685 |
2022 |  |  | 681 |
2023 |  |  | 2,838 |
Thereafter |  |  | 4,453 |
Total principal amount of debt |  |  | 9,434 |
Total debt-related balances, net |  |  | (107) |
Total carrying amount of debt |  | $ | 9,327 |
Schedule of debt repurchases and redemptions | During the nine months ended September 30, 2018 and 2017, we repurchased in the open market debt securities with aggregate principal amounts as follows (in millions):
|  | Nine months ended |
|  | September 30, |
|  |  | 2018 |  |  | 2017 |
2.50% Senior Notes due October 2017 |  | $ | — |  | $ | 62 |
6.00% Senior Notes due March 2018 |  |  | — |  |  | 35 |
7.375% Senior Notes due April 2018 |  |  | — |  |  | 1 |
6.50% Senior Notes due November 2020 |  |  | — |  |  | 9 |
6.375% Senior Notes due December 2021 |  |  | — |  |  | 7 |
3.80% Senior Notes due October 2022 |  |  | 95 |  |  | 33 |
Aggregate principal amount retired |  | $ | 95 |  | $ | 147 |
Aggregate cash payment |  | $ | 95 |  | $ | 147 |
Schedule of tender offers | We received valid tenders from holders of aggregate principal amounts of the 2017 Tendered Notes as follows (in million):
|  | Nine months
|  | ended
|  | September 30,
|  | 2017
2.50% Senior Notes due October 2017 |  | $ | 271
6.00% Senior Notes due March 2018 |  |  | 400
7.375% Senior Notes due April 2018 |  |  | 128
6.50% Senior Notes due November 2020 |  |  | 207
6.375% Senior Notes due December 2021 |  |  | 213
Aggregate principal amount retired |  | $ | 1,219
Aggregate cash payment |  | $ | 1,269

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