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Note 15 - Share Repurchase Programs - Schedule of Share Repurchase Programs (Details) - $ / shares
3 Months Ended 36 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2022
Treasury Stock, Number of Shares Purchased (in shares) 11,014,201 [1] 6,691,421 [1] 83,300,000
Treasury Stock, Average Price per Share (in dollars per share) [1],[2] $ 249.95 $ 209.50  
[1] Includes 7,012,232 shares repurchased in February 2022 under accelerated share repurchase programs.
[2] 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 initial settlement of the 2022 accelerated share repurchase programs was $250.99.