Note 6 - Stockholders' Equity - Changes in Each Component of Accumulated Other Comprehensive Income (AOCI) of the Parent (Details) - USD ($) $ in Millions	3 Months Ended							6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024		Jun. 30, 2023		Mar. 31, 2023		Jun. 30, 2024	Jun. 30, 2023
Balance	$ 1,604	$ 1,637		$ 1,658		$ 1,603		$ 1,637	$ 1,603
Other comprehensive income (loss)	(68)			(4)				(89)	37
Balance	1,544	1,604		1,681		1,658		1,544	1,681
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(884)	(868)		(871)		(895)		(868)	(895)
Currency translation adjustments	(45)	(16)		(6)		24
Other comprehensive income (loss)	(45)	(16)		(6)		24
Balance	(929)	(884)		(877)		(871)		(929)	(877)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	18	20		36		21		20	21
Holding gains and losses	(23)	9		10		16
Reclassification of amount to net income (a)	(8)	(11)	[1]	(7)	[2]
Other comprehensive income (loss)	(26)	(2)		3		15
Tax expense	5					(1)
Balance	(8)	18		39		36		(8)	39
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(141)	(142)		(126)		(127)		(142)	(127)
Reclassification adjustment for net actuarial losses included in net periodic benefit cost (b)	2	1	[2]	1	[1]	1	[1]
Other comprehensive income (loss)	4	1		0		1
Other	3
Tax expense	(1)			(1)
Balance	(137)	(141)		(126)		(126)		(137)	(126)
AOCI Attributable to Parent [Member]
Balance	(1,007)	(990)		(961)		(1,001)		(990)	(1,001)
Currency translation adjustments	(45)	(16)		(6)		24
Holding gains and losses	(23)	9		10		16
Reclassification of amount to net income (a)	(8)	(11)	[1]	(7)	[2]
Reclassification adjustment for net actuarial losses included in net periodic benefit cost (b)	2	1	[2]	1	[1]	1	[1]
Other comprehensive income (loss)	(67)	(17)		(3)		40
Other	3
Tax expense	4			(1)		(1)
Balance	$ (1,074)	$ (1,007)		$ (964)		$ (961)		$ (1,074)	$ (964)

[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 12 for additional details.

[2] See Note 10 for additional details.