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Note 4 - Restructuring of Operations - Accrued Restructuring Costs and Activity (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2021
Balance $ 20 $ 30
Charges to restructuring 2 6
Adjustments of accruals (1) (4)
Cash payments (5) (15)
Currency impact   (1)
Balance 16 16
Employee Termination Benefits [Member]    
Balance 20 30
Charges to restructuring 1 1
Adjustments of accruals (1) (4)
Cash payments (4) (10)
Currency impact   (1)
Balance 16 16
Exit Costs [Member]    
Charges to restructuring 1 5
Cash payments $ (1) $ (5)