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Debt (Tables) | 6 Months Ended
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Jun. 30, 2017
Debt |
Debt, net of unamortized discounts, premiums and fair value adjustments | he aggregate principal amounts and aggregate carrying amounts, net of debt‑related balances, including unamortized discounts, premiums and issue costs, of our debt were as follows (in millions):
|  | Principal amount |  |  | Carrying amount |
|  | June 30, |  | December 31, |  |  | June 30, |  | December 31, |
|  | 2017 |  | 2016 |  |  | 2017 |  | 2016 |
2.50% Senior Notes due October 2017 |  | $ | 152 |  | $ | 485 |  |  | $ | 152 |  | $ | 484 |
Eksportfinans Loans due January 2018 |  |  | 76 |  |  | 123 |  |  |  | 76 |  |  | 123 |
6.00% Senior Notes due March 2018 |  |  | 319 |  |  | 754 |  |  |  | 320 |  |  | 757 |
7.375% Senior Notes due April 2018 |  |  | 83 |  |  | 211 |  |  |  | 83 |  |  | 211 |
6.50% Senior Notes due November 2020 |  |  | 296 |  |  | 508 |  |  |  | 299 |  |  | 513 |
6.375% Senior Notes due December 2021 |  |  | 334 |  |  | 552 |  |  |  | 332 |  |  | 549 |
5.52% Senior Secured Notes due May 2022 |  |  | 410 |  |  | — |  |  |  | 403 |  |  | — |
3.80% Senior Notes due October 2022 |  |  | 506 |  |  | 539 |  |  |  | 501 |  |  | 534 |
9.00% Senior Notes due July 2023 |  |  | 1,250 |  |  | 1,250 |  |  |  | 1,214 |  |  | 1,211 |
7.75% Senior Secured Notes due October 2024 |  |  | 570 |  |  | 600 |  |  |  | 555 |  |  | 583 |
6.25% Senior Secured Notes due December 2024 |  |  | 594 |  |  | 625 |  |  |  | 579 |  |  | 609 |
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 |  |  |  | 308 |  |  | 308 |
Capital lease contract due August 2029 |  |  | 552 |  |  | 566 |  |  |  | 552 |  |  | 566 |
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 |  |  | 7,475 |  |  | 8,546 |  |  |  | 7,390 |  |  | 8,464 |
Less debt due within one year |  |  |  |  |  |  |  |  |  |  |  |  |  |
2.50% Senior Notes due October 2017 |  |  | 152 |  |  | 485 |  |  |  | 152 |  |  | 484 |
Eksportfinans Loans due January 2018 |  |  | 76 |  |  | 98 |  |  |  | 76 |  |  | 98 |
6.00% Senior Notes due March 2018 |  |  | 319 |  |  | — |  |  |  | 320 |  |  | — |
7.375% Senior Notes due April 2018 |  |  | 83 |  |  | — |  |  |  | 83 |  |  | — |
6.50% Senior Notes due November 2020 |  |  | 4 |  |  | — |  |  |  | 4 |  |  | — |
6.375% Senior Notes due December 2021 |  |  | 2 |  |  | — |  |  |  | 2 |  |  | — |
5.52% Senior Secured Notes due May 2022 |  |  | 87 |  |  | — |  |  |  | 85 |  |  | — |
7.75% Senior Secured Notes due October 2024 |  |  | 60 |  |  | 60 |  |  |  | 57 |  |  | 57 |
6.25% Senior Secured Notes due December 2024 |  |  | 63 |  |  | 63 |  |  |  | 60 |  |  | 60 |
Capital lease contract due August 2029 |  |  | 26 |  |  | 25 |  |  |  | 26 |  |  | 25 |
Total debt due within one year |  |  | 872 |  |  | 731 |  |  |  | 865 |  |  | 724 |
Total long-term debt |  | $ | 6,603 |  | $ | 7,815 |  |  | $ | 6,525 |  | $ | 7,740 |
Schedule of debt repurchases and redemptions | During the six months ended June 30, 2017 and 2016, we repurchased in the open market debt securities with aggregate principal amounts as follows (in millions):
|  | Six months ended
|  | June 30,
|  |  | 2017 |  |  | 2016 |
5.05% Senior Notes due December 2016 |  | $ | — |  | $ | 36 |
2.50% Senior Notes due October 2017 |  |  | 62 |  |  | 38 |
6.00% Senior Notes due March 2018 |  |  | 35 |  |  | 20 |
7.375% Senior Notes due April 2018 |  |  | 1 |  |  | 26 |
6.50% Senior Notes due November 2020 |  |  | 9 |  |  | 13 |
6.375% Senior Notes due December 2021 |  |  | 7 |  |  | 44 |
3.80% Senior Notes due October 2022 |  |  | 33 |  |  | 38 |
7.45% Notes due April 2027 |  |  | — |  |  | 8 |
7.50% Notes due April 2031 |  |  | — |  |  | 5 |
Aggregate principal amount retired |  | $ | 147 |  | $ | 228 |
Aggregate cash payment |  | $ | 147 |  | $ | 189 |
Schedule of tender offers | As of June 26, 2017, the early tender date, we received valid tenders from holders of aggregate principal amounts of the 2017 Tendered Notes as follows (in millions):
|  | Six months |
|  | ended |
|  | June 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 |  |  | 127 |
6.50% Senior Notes due November 2020 |  |  | 203 |
6.375% Senior Notes due December 2021 |  |  | 211 |
Aggregate principal amount retired |  | $ | 1,212 |
Aggregate cash payment |  | $ | 1,261 |

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