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Note 14 - Debt - Schedule of Debt (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Instrument | $ 35,101 |
Unamortized discount and deferred issuance costs | (1,775) | $ (1,763)
Total debt | 33,326 | 29,729
Less: current portion | (1,678) | (2,166)
Total long-term debt | 31,648 | 27,563
Notes Payable to Banks [Member] |  |
Debt Instrument | 33,658 | 29,508
Equipment Trust Certificate [Member] |  |
Debt Instrument | 809 | 848
Finance Lease [Member] |  |
Debt Instrument | 234 | 336
Commercial Paper [Member] |  |
Debt Instrument | 200 | 400
Secured Debt [Member] |  |
Debt Instrument | 100 | 300
Loans Payable [Member] |  |
Debt Instrument | $ 100 | $ 100

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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