Note 9 - Debt and Finance Leases - Schedule of Maturities of Debt and Finance Leases Outstanding (Details) $ in Millions	Dec. 31, 2022 USD ($)
2023, Carrying value	$ 1
2023, Maturity value	1
2024, Carrying value	2
2024, Maturity value	2
2025, Carrying value	1
2025, Maturity value	1
2026, Carrying value	304
2026, Maturity value	366
2027, Carrying value	1
2027, Maturity value	1
2027 and thereafter, Carrying value	8
2027 and thereafter, Maturity value	8
Total, Carrying value	317
Total, Maturity value	$ 379