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Note 14 - Debt - Schedule of Unsecured Debt (Details) - Unsecured Debt [Member] $ in Millions | Dec. 31, 2021 USD ($)
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2.150% Notes, Due February 5, 2027 [Member] |
Debt Instrument | $ 850
2.400% Notes, Due February 5, 2030 [Member] |
Debt Instrument | 1,000
3.250% Notes, Due February 5, 2050 [Member] |
Debt Instrument | 650
3.750% Notes, Due February 5, 2070 [Member] |
Debt Instrument | 150
3.250% Notes, Due February 5, 2050, Issued April 7, 2020 [Member] |
Debt Instrument | $ 850

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