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Note 19 - Financial Instruments (Details Textual)
$ in Billions
Dec. 31, 2020
USD ($)
Fair Value, Inputs, Level 3 [Member] | Contingent Consideration Liability [Member]  
Fair Value Inputs Discount Rate Data Point Concentration 9.00%
Fair Value Inputs Weighted Average Discount Rate Increase 2.00%
Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Measurement Input, Discount Rate [Member]  
Business Combination, Contingent Consideration, Liability, Measurement Input 0.08
Long-term Debt, Measurement Input 0.01
Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Measurement Input, Discount Rate [Member]  
Business Combination, Contingent Consideration, Liability, Measurement Input 0.1
Long-term Debt, Measurement Input 0.015
Interest Rate Swap [Member]  
Derivative, Number of Instruments Held, Total 1
Derivative, Notional Amount $ 0.1