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Fair Value Measurements (Details 2) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Estimate of Fair Value Measurement |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Fair value of long-term debt, including current portion | $ 2,838 | $ 2,894
Reported Value Measurement |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Fair value of long-term debt, including current portion | 2,969 | 2,968
Recurring basis |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Cash equivalents | 1,583 | 1,824
Nonqualified employee benefit trusts | 17 | 17
Derivative Liability | (2) | (35)
Derivative Asset | 1 | 1
Recurring basis | Quoted Prices in Active Markets (Level 1) |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Cash equivalents | 1,583 | 1,824
Nonqualified employee benefit trusts | 17 | 17
Derivative Liability | 0 | 0
Derivative Asset | 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
Nonqualified employee benefit trusts | 0 | 0
Derivative Liability | (2) | (35)
Derivative Asset | 1 | 1
Recurring basis | Fair Value, Inputs (Level 3) |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Cash equivalents | 0 | 0
Nonqualified employee benefit trusts | 0 | 0
Derivative Liability | 0 | 0
Derivative Asset | $ 0 | $ 0

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