Note 12 - Shareholders' Equity- Summary of Changes in Foreign Currency Translation Adjustment Component of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Balance		$ 12,207	$ 12,629	$ 12,275	$ 12,545
Loss on foreign currency translation (2)		(318)	(650)	(402)	(850)
Net current-period other comprehensive loss		(302)	(732)	(369)	(919)
Balance		11,710	11,982	11,710	11,982
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	[1]	(1,796)	(1,133)	(1,712)	(933)
Loss on foreign currency translation (2)	[1],[2]	(310)	(635)	(393)	(833)
Equity method affiliates (3)	[1],[3]	(8)	(15)	(9)	(17)
Net current-period other comprehensive loss		(318)	(650)	(402)	(850)
Balance	[1]	$ (2,114)	$ (1,783)	$ (2,114)	$ (1,783)

[1] All amounts are after tax. Amounts in parentheses indicate debits to accumulated other comprehensive (loss) income.

[2] For the three and six months ended June 30, 2023, amounts are net of tax benefit of $3 million and $19 million, respectively. For the three and six months ended June 30, 2022, amounts are net of tax benefit of $27 million and $38 million, respectively.

[3] Tax effects are not significant.