Note 8 - Accumulated Other Comprehensive Income/Loss - Schedule of Reclassification (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Balance		$ 14,788	$ 12,163
Total other comprehensive income/(loss)	[1]	4	22
Balance		15,665	12,454
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance		(484)	(378)
Other comprehensive income/(loss) before reclassifications		2	0
Amounts reclassified from accumulated other comprehensive income/(loss) [b]	[2]	(1)	(1)
Total other comprehensive income/(loss)		1	(1)
Balance		(483)	(379)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance		(146)	(204)
Other comprehensive income/(loss) before reclassifications		3	23
Amounts reclassified from accumulated other comprehensive income/(loss) [b]	[2]	0	0
Total other comprehensive income/(loss)		3	23
Balance		(143)	(181)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	[3]	16	0
Other comprehensive income/(loss) before reclassifications	[3]	0	0
Amounts reclassified from accumulated other comprehensive income/(loss) [b]	[2],[3]	0	0
Total other comprehensive income/(loss)	[3]	0	0
Balance	[3]	16	0
AOCI Attributable to Parent [Member]
Balance	[4]	(614)	(582)
Other comprehensive income/(loss) before reclassifications		5	23
Amounts reclassified from accumulated other comprehensive income/(loss) [b]	[2]	(1)	(1)
Total other comprehensive income/(loss)	[4]	4	22
Balance	[4]	$ (610)	$ (560)

[1] Net of deferred taxes of ($0) million during both the three months ended March 31, 2024 and 2023.

[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 5 Retirement Plans for additional details.

[3] Related to interest rate swaps from equity method investments.

[4] AOCI = accumulated other comprehensive income/loss (Note 8)