Note 7 - Leases - Maturities (Details) $ in Millions	Dec. 31, 2021 USD ($)
Operating Leases, 2022	$ 52
Finance Leases, 2022	10
Operating Leases, 2023	40
Finance Leases, 2023	9
Operating Leases, 2024	35
Finance Leases, 2024	7
Operating Leases, 2025	31
Finance Leases, 2025	6
Operating Leases, 2026	28
Finance Leases, 2026	5
Operating Leases, Thereafter	170
Finance Leases, Thereafter	40
Operating Leases, Total lease payments	356
Finance Leases, Total lease payments	77
Operating Leases, Less: interest	104
Finance Leases, Less: interest	22
Operating Leases, Present value of lease liabilities	252
Finance Leases, Present value of lease liabilities	$ 55