Note 10 - Summary of Lease Related Assets and Liabilities on Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets
Operating lease assets	$ 47	$ 48
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Operating lease assets	Operating lease assets
Finance lease assets	$ 1	$ 4
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, net	Property, plant and equipment, net
Total lease assets	$ 48	$ 52
Current
Operating	$ 13	$ 12
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Operating	Operating
Finance		$ 1
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	us-gaap:DebtLongtermAndShorttermCombinedAmount	us-gaap:DebtLongtermAndShorttermCombinedAmount
Noncurrent
Operating	$ 45	$ 49
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Operating	Operating
Finance	$ 1	$ 3
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Short-term borrowings and current portion of long-term debt	Short-term borrowings and current portion of long-term debt
Total lease liabilities	$ 59	$ 65
Weighted-average remaining lease term
Operating		5 years
Finance		2 years
Weighted-average discount rate
Operating		11.91%
Finance		5.56%