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Debt and Credit Agreements - Schedule of Long-term Debt Instruments (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |
Finance Leases Average Interest Rate | 6.00% |
Subtotal Long-term Debt (Including Current Portion) | $ 18,047 | $ 16,366
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Long-term Debt (Excluding Current Portion) | Long-term Debt (Excluding Current Portion)
Finance Leases | $ 29 | $ 47
Less Debt Due within One Year | (151) | (181)
Long-term Debt (Excluding Current Portion) | $ 17,896 | 16,185
Notes |  |
Debt Instrument [Line Items] |  |
Debt Average Interest Rates | 4.20% |
Subtotal Long-term Debt (Including Current Portion) | $ 17,877 | 16,166
Equipment Obligations |  |
Debt Instrument [Line Items] |  |
Debt Average Interest Rates | 6.20% |
Subtotal Long-term Debt (Including Current Portion) | $ 141 | $ 153

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