Note 6 - Stockholders' Equity - Changes in Each Component of Accumulated Other Comprehensive Income (AOCI) of the Parent (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Balance		$ 1,396	$ 1,637
Other comprehensive income (loss)		32	(21)
Balance		1,446	1,604
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance		(977)	(868)
Currency translation adjustments		14	(16)
Other comprehensive income (loss)		14	(16)
Balance		(963)	(884)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance		(29)	20
Holding gains and losses		(11)	9
Reclassification of amount to net income (a)	[1]	34	(11)
Tax expense		(5)
Other comprehensive income (loss)		18	(2)
Balance		(11)	18
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance		(136)	(142)
Other comprehensive income (loss)		0	1
Balance		(136)	(141)
Reclassification adjustment for net actuarial losses included in net periodic benefit cost (b)	[2]		1
AOCI Attributable to Parent [Member]
Balance		(1,142)	(990)
Currency translation adjustments		14	(16)
Holding gains and losses		(11)	9
Reclassification of amount to net income (a)	[1]	34	(11)
Tax expense		(5)
Other comprehensive income (loss)		32	(17)
Balance		$ (1,110)	(1,007)
Reclassification adjustment for net actuarial losses included in net periodic benefit cost (b)	[2]		$ 1

[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.