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Note 18 - Share Repurchase Programs (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended 36 Months Ended
Feb. 18, 2022
May 26, 2021
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
 [2]
Dec. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
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)     3,501,667 9,490,339 3,100,683 [1] 11,014,201 [2] 5,837,551 8,604,239 [3] 12,204,409 [1] 6,691,421 16,100,000 27,106,890 33,337,620   83,300,000  
Treasury Stock Acquired, Average Cost Per Share (in dollars per share) [4]     $ 201.33 $ 221.52 $ 232.87 [1] $ 249.95 [2] $ 233.71 $ 210.31 [3] $ 222.46 [1] $ 209.50   $ 231.76 $ 218.69      
Treasury Stock, Value, Acquired, Cost Method, Including Amount Paid in Excess                       $ 6,282 $ 7,291 $ 3,705    
Accelerated Share Repurchase Programs (ASRs) [Member]                                
Treasury Stock, Shares, Acquired (in shares) 7,012,232 7,209,156     1,847,185 7,012,232   1,983,859 7,209,156              
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)                       $ 248.32 $ 217.56      
Treasury Stock, Value, Acquired, Cost Method, Including Amount Paid in Excess $ 2,200 $ 2,000                            
[1] Includes an incremental 1,847,185 shares received upon final settlement in 2022 and 7,209,156 shares repurchased in 2021 under accelerated share repurchase programs.
[2] Includes 7,012,232 shares repurchased in 2022 under accelerated share repurchase programs.
[3] Includes an incremental 1,983,859 shares received upon final settlement in 2021 under accelerated share repurchase programs.
[4] 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 and 2021 accelerated share repurchase programs was $248.32 and $217.56, respectively.