Note 8 - Debt and Credit Facilities - Related Maturities and Interest Rates (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Jan. 31, 2019
Short-term borrowings and current portion of long-term debt	$ 1	$ 1
Long-term debt, net of current portion	466	457
Long-Term Debt	$ 467	458
Arrangements with R E D Rochester L L C [Member]
Weighted average effective interest rate	11.46%
Short-term borrowings and current portion of long-term debt	$ 1	1
Long-term debt, net of current portion	$ 10	10
Long-Term Debt			$ 14
Term Loans [Member]
Weighted average effective interest rate	13.48%
Long-term debt, net of current portion	$ 455	446
Finance Leases [Member]
Long-term debt, net of current portion	$ 1	$ 1