Note 5 - Stockholders' Equity - Changes in Each Component of Accumulated Other Comprehensive Income (AOCI) of the Parent (Details) - USD ($) $ in Millions	3 Months Ended										9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023		Mar. 31, 2023		Sep. 30, 2022	Jun. 30, 2022		Mar. 31, 2022		Sep. 30, 2023	Sep. 30, 2022
Balance	$ 1,681	$ 1,658		$ 1,603		$ 1,903	$ 1,987		$ 1,975		$ 1,603	$ 1,975
Other comprehensive income (loss)	(46)					(80)					(9)	(131)
Balance	1,647	1,681		1,658		1,671	1,903		1,987		1,647	1,671
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(877)	(871)		(895)		(853)	(770)		(809)		(895)	(809)
Currency translation adjustments	(21)	(6)		24		(69)	(83)		39
Other comprehensive income (loss)	(21)	(6)		24		(69)	(83)		39
Balance	(898)	(877)		(871)		(922)	(853)		(770)		(898)	(922)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	39	36		21		1			4		21	4
Holding gains and losses	8	10		16		44	42		19
Tax expense	1			(1)		(1)	(2)		(1)
Other comprehensive income (loss)	(21)	3		15		1	1		(4)
Reclassification of amount to net income (a)	(30)	(7)	[1]			(42)	(39)	[1]	(22)	[1]
Balance	18	39		36		2	1				18	2
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(126)	(126)		(127)		(176)	(179)		(180)		(127)	(180)
Reclassification adjustment for net actuarial losses included in net periodic benefit cost (b)		1	[2]	1	[2]	2	4	[2]	2	[2]
Tax expense	(1)	(1)				(1)	(1)		(1)
Other comprehensive income (loss)	(1)			1		1	3		1
Balance	(127)	(126)		(126)		(175)	(176)		(179)		(127)	(175)
AOCI Attributable to Parent [Member]
Balance	(964)	(961)		(1,001)		(1,028)	(949)		(985)		(1,001)	(985)
Currency translation adjustments	(21)	(6)		24		(69)	(83)		39
Holding gains and losses	8	10		16		44	42		19
Reclassification adjustment for net actuarial losses included in net periodic benefit cost (b)		1	[2]	1	[2]	2	4	[2]	2	[2]
Tax expense		(1)		(1)		(2)	(3)		(2)
Other comprehensive income (loss)	(43)	(3)		40		(67)	(79)		36
Reclassification of amount to net income (a)	(30)	(7)	[1]			(42)	(39)	[1]	(22)	[1]
Balance	$ (1,007)	$ (964)		$ (961)		$ (1,095)	$ (1,028)		$ (949)		$ (1,007)	$ (1,095)

[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 11 for additional details.

[2] See Note 9 for additional details.