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Note 15 - Share Repurchase Programs - Schedule of Share Repurchase Programs (Details) - $ / shares
 3 Months Ended 6 Months Ended 15 Months Ended 36 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2022
 [1]
Mar. 31, 2022
 [2]
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Mar. 31, 2022
Treasury Stock, Number of Shares Purchased (in shares) 606,581 2,908,703 3,100,683 11,014,201 3,515,284 14,114,884 19,600,000 83,300,000
Treasury Stock, Average Price per Share (in dollars per share) $ 199.81 $ 203.19 $ 232.87 [3] $ 249.95 [3] $ 202.61 $ 246.20    
Remaining number of shares that may be repurchased under current authority (in shares) 80,392,027       80,392,027   80,392,027  
[1] Includes 1,847,185 shares repurchased in 2022 under accelerated share repurchase programs.
[2] Includes 7,012,232 shares repurchased in 2022 under accelerated share repurchase programs.
[3] In the period of the final settlement, the average price paid under the accelerated share repurchase programs is calculated based on the total program value less the value assigned to the initial delivery of shares. The average price of the completed 2022 accelerated share repurchase programs was $248.32.