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Note 11 - Stock Compensation - Total Stock Compensation Expense and Other Annual Disclosures (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Stock compensation expense $ 26 $ 19 $ 17
Total grant-date fair value of awards vested 33 19 15
Cash received from exercise of stock options 3   5
Cash paid to settle SARs and RSUs 5 4 2
Stock Option and Stock Appreciation Rights [Member]      
Intrinsic value of stock options and SARs exercised 1   2
Restricted Stock Units (RSUs) and Performance Share Units (PSUs) [Member]      
Intrinsic value of RSUs and PSUs vested $ 30 $ 21 $ 14