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, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Balance		$ 12,629	$ 12,545	$ 13,558	$ 13,448	$ 12,545	$ 13,448
Foreign currency translation adjustments and other		(650)		40		(850)	(323)
Net current-period other comprehensive (loss) income		(734)	(187)	41	(353)
Balance		11,982	12,629	12,142	13,558	11,982	12,142
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	[1]	(1,133)	(933)	(692)	(329)	(933)	(329)
Foreign currency translation adjustments and other	[1],[2]	(635)		39		(833)	(316)
Equity method affiliates (3)	[1],[3]	(15)		1		(17)	(7)
Net current-period other comprehensive (loss) income		(650)		40		(850)	(323)
Balance	[1]	$ (1,783)	$ (1,133)	$ (652)	$ (692)	$ (1,783)	$ (652)

[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, 2022, amounts are net of tax benefit of $27 million and $38 million, respectively. For the three and six months ended June 30, 2021, amounts are net of tax benefit of $1 million and $11 million, respectively

[3] Tax effects are not significant.