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Note 4 - Restructuring of Operations - Accrued Restructuring Costs and Activity (Details)
$ in Millions
3 Months Ended
Mar. 31, 2022
USD ($)
Balance $ 11
Charges to restructuring 0
Adjustments of accruals (1)
Cash payments (1)
Balance 9
Employee Termination Benefits [Member]  
Balance 11
Adjustments of accruals (1)
Cash payments (1)
Balance 9
Exit Costs [Member]  
Balance 0
Balance $ 0