Note 7 - Leases - Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 63	$ 56	$ 53
Operating cash flows from finance leases	7	3	2
Financing cash flows from finance leases	19	9	6
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	74	28	48
Finance leases	$ 100	$ 53	$ 5