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Note 12 - Financial Instruments (Details Textual) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss, Current	$ 46	$ 46
Debt Instrument, Fair Value Disclosure, Total	32,000	32,900
Fair Value of Total Debt in Excess of Carrying Value	200	$ 3,200
Fair Value, Inputs, Level 2 [Member] | Bank Time Deposits and Government Agency Securities [Member]
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss, Current	$ 46

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- Definition

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+ References

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