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		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Balance		$ 11,710	$ 11,982	$ 12,275	$ 12,545
Loss on foreign currency translation (2)		(191)	(685)	(593)	(1,535)
Net current-period other comprehensive loss		(203)	(697)	(572)	(1,616)
Balance		11,744	11,548	11,744	11,548
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	[1]	(2,114)	(1,783)	(1,712)	(933)
Loss on foreign currency translation (2)	[1],[2]	(195)	(664)	(588)	(1,497)
Equity method affiliates (3)	[1],[3]	4	(21)	(5)	(38)
Net current-period other comprehensive loss		(191)	(685)	(593)	(1,535)
Balance	[1]	$ (2,305)	$ (2,468)	$ (2,305)	$ (2,468)

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

[2] For the three and nine months ended September 30, 2023, amounts are net of tax benefit of $14 million and $33 million, respectively. For the three and nine months ended September 30, 2022, amounts are net of tax benefit of $49 million and $87 million, respectively.

[3] Tax effects are not significant.