Note 7 - Accumulated Other Comprehensive Income (Loss) - Schedule of Reclassification (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Balance		$ 12,163	$ 14,161
Total other comprehensive income/(loss)	[1]	22	36
Balance		12,454	11,897
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance		(378)	(658)
Other comprehensive income/(loss) before reclassifications		0	0
Amounts reclassified from accumulated other comprehensive income/(loss) [a]	[2]	(1)	15
Total other comprehensive income/(loss)		(1)	15
Balance		(379)	(643)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance		(204)	(256)
Other comprehensive income/(loss) before reclassifications		23	21
Amounts reclassified from accumulated other comprehensive income/(loss) [a]	[2]	0	0
Total other comprehensive income/(loss)		23	21
Balance		(181)	(235)
AOCI Attributable to Parent [Member]
Balance	[3]	(582)	(914)
Other comprehensive income/(loss) before reclassifications		23	21
Amounts reclassified from accumulated other comprehensive income/(loss) [a]	[2]	(1)	15
Total other comprehensive income/(loss)	[3]	22	36
Balance	[3]	$ (560)	$ (878)

[1] Net of deferred taxes of ($0) million and ($5) million during the three months ended March 31, 2023 and 2022, respectively.

[2] The accumulated other comprehensive income/loss reclassification components are 1) prior service cost/credit and 2) net actuarial loss, which are both included in the computation of net periodic pension benefit/cost. See Note 4 Retirement Plans for additional details.

[3] AOCI = Accumulated Other Comprehensive Income/Loss (Note 7)