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Note 15 - Restructuring Reserve Activity (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2019
USD ($)
Restructuring Cost And Reserve [Line Items]  
Beginning Balance $ 8
Charges 2
Utilization/cash payments (2)
Other adjustments and reclasses (1) [1]
Ending Balance 7
Severance Reserve [Member]  
Restructuring Cost And Reserve [Line Items]  
Beginning Balance 6 [2]
Charges 2 [2]
Utilization/cash payments (2) [2]
Other adjustments and reclasses (1) [1],[2]
Ending Balance 5 [2]
Exit Costs Reserve [Member]  
Restructuring Cost And Reserve [Line Items]  
Beginning Balance 2 [2]
Ending Balance $ 2 [2]
[1] Represents severance charges funded from pension plan assets, which were reclassified to Pension and other postretirement liabilities.
[2] The severance and exit costs reserves require the outlay of cash, while long-lived asset impairments and inventory write-downs represent non-cash items.