Note 5 - Debt and Credit Facilities - Related Maturities and Interest Rates (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Short-term borrowings and current portion of long-term debt	$ 1	$ 1
Long-term debt, net of current portion	451	316
Long-Term Debt	$ 452	317
Term Loans [Member]
Weighted average effective interest rate	13.92%
Long-term debt, net of current portion	$ 440	0
Original Term Loan Credit Agreement [Member]
Weighted average effective interest rate	13.68%
Long-term debt, net of current portion	$ 0	286
Convertible Debt [Member]
Weighted average effective interest rate	17.28%
Long-term debt, net of current portion	$ 0	18
Arrangements with R E D Rochester L L C [Member]
Weighted average effective interest rate	11.48%
Long-term debt, net of current portion	$ 11	11
Other Debt [Member]
Long-term debt, net of current portion	$ 0	1
Arrangements with R E D Rochester L L C [Member]
Weighted average effective interest rate	11.48%
Short-term borrowings and current portion of long-term debt	$ 1	$ 1

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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