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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.

X

- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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X

- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	duration

X

- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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