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Fair Value Measurements (Details 2) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |  |
Payment to CHS related to credit provision | $ (5) | $ (5) | $ (5) | $ (5) | $ (5) | $ (5) | $ (5) | $ 0 | $ (5) | $ (5)
(Gain) loss on embedded derivative |  |  |  |  |  |  |  | $ (14) | $ 1 | $ 3
Debt Instrument, Fair Value Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |
DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag |  |  |  |  |  |  |  | Derivative liabilities | Derivative liabilities |
Recurring basis |  |  |  |  |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |  |
Cash equivalents | 2,170 | 1,507 |  |  |  |  |  | $ 2,170 | $ 1,507 |
Nonqualified employee benefit trusts | 16 | 20 |  |  |  |  |  | 16 | 20 |
Derivative assets | 12 | 16 |  |  |  |  |  | 12 | 16 |
Derivative liabilities | (85) | (47) |  |  |  |  |  | (85) | (47) |
Embedded Derivative, Fair Value of Embedded Derivative Liability | (1) | (15) |  |  |  |  |  | (1) | (15) |
Recurring basis | Quoted Prices in Active Markets (Level 1) |  |  |  |  |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |  |
Cash equivalents | 2,170 | 1,507 |  |  |  |  |  | 2,170 | 1,507 |
Nonqualified employee benefit trusts | 16 | 20 |  |  |  |  |  | 16 | 20 |
Derivative assets | 0 | 0 |  |  |  |  |  | 0 | 0 |
Derivative liabilities | 0 | 0 |  |  |  |  |  | 0 | 0 |
Embedded Derivative, Fair Value of Embedded Derivative Liability | 0 | 0 |  |  |  |  |  | 0 | 0 |
Recurring basis | Significant Other Observable Inputs (Level 2) |  |  |  |  |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |  |
Cash equivalents | 0 | 0 |  |  |  |  |  | 0 | 0 |
Nonqualified employee benefit trusts | 0 | 0 |  |  |  |  |  | 0 | 0 |
Derivative assets | 12 | 16 |  |  |  |  |  | 12 | 16 |
Derivative liabilities | (85) | (47) |  |  |  |  |  | (85) | (47) |
Embedded Derivative, Fair Value of Embedded Derivative Liability | (1) | (15) |  |  |  |  |  | (1) | (15) |
Recurring basis | Significant Unobservable Inputs (Level 3) |  |  |  |  |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |  |
Cash equivalents | 0 | 0 |  |  |  |  |  | 0 | 0 |
Nonqualified employee benefit trusts | 0 | 0 |  |  |  |  |  | 0 | 0 |
Derivative assets | 0 | 0 |  |  |  |  |  | 0 | 0 |
Derivative liabilities | 0 | 0 |  |  |  |  |  | 0 | 0 |
Embedded Derivative, Fair Value of Embedded Derivative Liability | 0 | 0 |  |  |  |  |  | 0 | 0 |
Estimate of Fair Value Measurement |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |
Long-term debt, Fair Value | 2,764 | 4,113 |  |  |  |  |  | 2,764 | 4,113 |
Reported Value Measurement |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |
Long-term debt, Fair Value | $ 2,965 | $ 3,465 |  |  |  |  |  | $ 2,965 | $ 3,465 |

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