Note 9 - Accumulated Other Comprehensive Income (Loss) - Schedule of Reclassification (Details) - USD ($) $ in Millions		3 Months Ended				6 Months Ended
		Jun. 30, 2022		Jun. 30, 2021		Jun. 30, 2022		Jun. 30, 2021
Balance		$ 11,897		$ 16,254		$ 14,161		$ 16,958
Total other comprehensive income/(loss) [a]		37	[1]	43	[1]	73	[2]	42	[2]
Balance		12,710		14,303		12,710		14,303
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance		(643)		(1,356)		(658)		(1,381)
Other comprehensive income/(loss) before reclassifications				(1)		0		(2)
Amounts reclassified from accumulated other comprehensive income/(loss) [a]	[3]	14		25		29		51
Total other comprehensive income/(loss) [a]		14		24		29		49
Balance		(629)		(1,332)		(629)		(1,332)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance		(235)		(238)		(256)		(212)
Other comprehensive income/(loss) before reclassifications		23		19		44		(7)
Amounts reclassified from accumulated other comprehensive income/(loss) [a]	[3]					0		0
Total other comprehensive income/(loss) [a]		23		19		44		(7)
Balance		(212)		(219)		(212)		(219)
AOCI Attributable to Parent [Member]
Balance	[4]	(878)		(1,594)		(914)		(1,593)
Other comprehensive income/(loss) before reclassifications		23		18		44		(9)
Amounts reclassified from accumulated other comprehensive income/(loss) [a]	[3]	14		25		29		51
Total other comprehensive income/(loss) [a]	[4]	37		43		73		42
Balance	[4]	$ (841)		$ (1,551)		$ (841)		$ (1,551)

[1] Net of deferred taxes of ($6) million and ($10) million during the three months ended June 30, 2022 and 2021, respectively.

[2] Net of deferred taxes of ($11) million and ($18) million during the six months ended June 30, 2022 and 2021, respectively.

[3] 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 cost. See Note 5 Retirement Plans for additional details.

[4] AOCI = Accumulated Other Comprehensive Income/Loss (Note 9)