v3.22.0.1
Note 18 - Share Repurchase Programs - Schedule of Share Repurchase Programs (Details) - $ / shares
 3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
 [1]
Jun. 30, 2021
 [2]
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
 [1]
Jun. 30, 2020
Mar. 31, 2020
 [3]
Dec. 31, 2021
Dec. 31, 2020
Treasury Stock, Number of Shares Purchased (in shares) 5,837,551 8,604,239 12,204,409 6,691,421 3,780,743 4,045,575 0 14,305,793 33,337,620 22,132,111
Treasury Stock, Average Price per Share (in dollars per share) [4] $ 233.71 $ 210.31 $ 222.46 $ 209.50 $ 198.07 $ 98.87 $ 0 $ 178.66 $ 218.69 $ 167.39
Treasury Stock, Authorized Remaining Number of Shares that may be Purchased (in shares) [4] 77,685,350               77,685,350  
[1] Includes an incremental 1,983,859 and 4,045,575 shares received upon final settlement in September 2021 and July 2020, respectively, under accelerated share repurchase programs.
[2] Includes 7,209,156 shares repurchased in May 2021 under accelerated share repurchase programs.
[3] Includes 8,786,380 shares repurchased in February 2020 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 2021 and 2020 accelerated share repurchase programs was $217.56 and $155.86, respectively.