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Note 14 - Debt - Schedule of Unsecured Debt (Details) (Parentheticals)	9 Months Ended
	Sep. 30, 2022	Sep. 09, 2022
4.950% Notes, Due September 9, 2052 [Member]
Debt Instrument, Interest Rate		4.95%
Unsecured Debt [Member] | 2.8% Notes, Due February 14, 2032 [Member]
Debt Instrument, Interest Rate	2.80%
Debt Instrument, Maturity Date	Feb. 14, 2032
Unsecured Debt [Member] | 3.375% Notes, Due February 14, 2042 [Member]
Debt Instrument, Interest Rate	3.375%
Debt Instrument, Maturity Date	Feb. 14, 2042
Unsecured Debt [Member] | The 3.5% Notes, Due February 14, 2053 [Member]
Debt Instrument, Interest Rate	3.50%
Debt Instrument, Maturity Date	Feb. 14, 2053
Unsecured Debt [Member] | 3.85% Notes, Due February 14, 2072 [Member]
Debt Instrument, Interest Rate	3.85%
Debt Instrument, Maturity Date	Feb. 14, 2072
Unsecured Debt [Member] | 4.500% Notes Due January 20, 2033 [Member]
Debt Instrument, Interest Rate	4.50%
Debt Instrument, Maturity Date	Jan. 20, 2033
Unsecured Debt [Member] | 4.950% Notes, Due September 9, 2052 [Member]
Debt Instrument, Interest Rate	4.95%
Debt Instrument, Maturity Date	Sep. 09, 2052
Unsecured Debt [Member] | 5.150% Notes Due January 20, 2063 [Member]
Debt Instrument, Interest Rate	5.15%
Debt Instrument, Maturity Date	Jan. 20, 2063

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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