Note 6 - Stockholders' Equity - Changes In Equity (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023
Balance	$ 1,604	$ 1,637	$ 1,658	$ 1,603
Net income (loss)	21	8	35	32
Other comprehensive income (loss)	(67)	(18)	(3)	40
Common stock dividends and dividend equivalents	(15)	(15)	(14)	(15)
Distributions to noncontrolling interests	(1)	(1)	(2)	(1)
Redeemable noncontrolling interests adjustment to redemption value	(5)	(8)		(1)
Stock compensation	7	5	7	8
Stock withheld for employee taxes		(4)		(8)
Balance	1,544	1,604	1,681	1,658
Common Stock [Member]
Balance	2	2	2	2
Balance	2	2	2	2
Additional Paid-in Capital [Member]
Balance	2,260	2,255	2,237	2,229
Stock compensation	7	5	7	8
Balance	2,267	2,260	2,244	2,237
Retained Earnings [Member]
Balance	297	317	333	321
Net income (loss)	16	3	30	28
Common stock dividends and dividend equivalents	(15)	(15)	(14)	(15)
Redeemable noncontrolling interests adjustment to redemption value	(5)	(8)		(1)
Balance	293	297	349	333
Treasury Stock, Common [Member]
Balance	(13)	(9)	(8)	0
Stock withheld for employee taxes		(4)		(8)
Balance	(13)	(13)	(8)	(8)
AOCI Attributable to Parent [Member]
Balance	(1,007)	(990)	(961)	(1,001)
Other comprehensive income (loss)	(67)	(17)	(3)	40
Balance	(1,074)	(1,007)	(964)	(961)
Noncontrolling Interest [Member]
Balance	65	62	55	52
Net income (loss)	5	5	5	4
Other comprehensive income (loss)		(1)
Distributions to noncontrolling interests	(1)	(1)	(2)	(1)
Balance	$ 69	$ 65	$ 58	$ 55