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Note 18 - Share Repurchase Programs (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended 21 Months Ended 36 Months Ended
Feb. 18, 2022
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2023
Mar. 31, 2022
Apr. 01, 2022
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)                 150,000,000         150,000,000 100,000,000
Treasury Stock, Shares, Acquired (in shares)   0 0 606,581 2,908,703 3,501,667 9,490,339 3,100,683 [1] 11,014,201 [2] 3,515,284 27,106,890   19,600,000 83,300,000  
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)   $ 0 $ 0 $ 199.81 $ 203.19 $ 201.33 $ 221.52 $ 232.87 [1],[3] $ 249.95 [2],[3] $ 202.61 $ 231.76        
Treasury Stock, Value, Acquired, Cost Method, Including Amount Paid in Excess                   $ 712 $ 6,282 $ 7,291      
Accelerated Share Repurchase Programs (ASRs) [Member]                              
Treasury Stock, Shares, Acquired (in shares) 7,012,232             1,847,185 7,012,232            
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)                     $ 248.32        
Treasury Stock, Value, Acquired, Cost Method, Including Amount Paid in Excess $ 2,200                            
[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.