Note 8 - Stockholders' Equity - Changes in Each Component of Accumulated Other Comprehensive Income (AOCI) of the Parent (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balance		$ 1,834	$ 1,968	$ 1,442
Other comprehensive income (loss)		39	(29)	376
Deconsolidation of non-wholly owned subsidiary		(8)	(20)
Balance		1,975	1,834	1,968
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance		(802)	(714)	(721)
Currency translation adjustments		(7)	(88)	8
Tax (expense) benefit				(1)
Other comprehensive income (loss)		(7)	(88)	7
Balance		(809)	(802)	(714)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance		9	(30)	(54)
Holding gains and losses		55	(78)	58
Reclassification of amount to net income	[1]	(59)	117	(33)
Tax (expense) benefit		(1)		(1)
Other comprehensive income (loss)		(5)	39	24
Balance		4	9	(30)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance		(233)	(243)	(587)
Net actuarial gains (losses)		52	(11)	71
Reclassification adjustment for net actuarial losses included in net periodic benefit cost (b)	[2]	18	20	286
Tax (expense) benefit		(17)		(13)
Other comprehensive income (loss)		53	9	344
Deconsolidation of non-wholly owned subsidiary			1
Balance		(180)	(233)	(243)
AOCI Attributable to Parent [Member]
Balance		(1,026)	(987)	(1,362)
Currency translation adjustments		(7)	(88)	8
Holding gains and losses		55	(78)	58
Reclassification of amount to net income	[1]	(59)	117	(33)
Net actuarial gains (losses)		52	(11)	71
Reclassification adjustment for net actuarial losses included in net periodic benefit cost (b)	[2]	18	20	286
Tax (expense) benefit		(18)		(15)
Other comprehensive income (loss)		41	(40)	375
Deconsolidation of non-wholly owned subsidiary			1
Balance		$ (985)	$ (1,026)	$ (987)

[1] Realized gains and losses from currency-related forward contracts associated with forecasted transactions or from other derivative instruments treated as cash flow hedges are reclassified from AOCI into the same line item in the consolidated statement of operations in which the underlying forecasted transaction or other hedged item is recorded. See Note 15 for additional details.

[2] See Note 12 for additional details.