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Note 14 - Debt - Schedule of Unsecured Debt (Details) - Unsecured Debt [Member]
$ in Millions
Jun. 30, 2022
USD ($)
2.8% Notes, Due February 14, 2032 [Member]  
Debt Instrument $ 1,250
3.375% Notes, Due February 14, 2042 [Member]  
Debt Instrument 500
The 3.5% Notes, Due February 14, 2053 [Member]  
Debt Instrument 1,250
3.85% Notes, Due February 14, 2072 [Member]  
Debt Instrument $ 500