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Debt (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Debt Disclosure [Abstract] |
Schedule of Long-Term Debt | Debt.
December 31, | 2021 |  | 2020
5.400% Notes, due 2021(1) | $ | — |  |  | $ | 361 |
5.870% Notes, due 2022(2) | — |  |  | 476 |
5.125% Notes, due 2024 | 1,150 |  |  | 1,250 |
6.875% Notes, due 2025 | 600 |  |  | 1,200 |
5.900% Notes, due 2027 | 625 |  |  | 625 |
6.750% Bonds, due 2028 | 300 |  |  | 300 |
3.000% Notes due 2029 | 700 |  |  | — |
5.950% Notes, due 2037 | 625 |  |  | 625 |
4.750% Iowa Finance Authority Loan, due 2042 | 250 |  |  | 250 |
Other(3) | (18) |  |  | (12) |
| 4,232 |  |  | 5,075 |
Less: amount due within one year | 5 |  |  | 376 |
Total long-term debt | $ | 4,227 |  |  | $ | 4,699 |
(1)Redeemed on January 15, 2021. (2)Redeemed on May 3, 2021. (3)Includes various financing arrangements related to subsidiaries, unamortized debt discounts and unamortized debt issuance costs related to outstanding notes and bonds listed in the table above.

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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