Note 5 - Stockholders' Equity - Changes In Equity (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Balance	$ 1,681	$ 1,658	$ 1,603	$ 1,903	$ 1,987	$ 1,975
Net income (loss)	27	35	32	(84)	11	21
Other comprehensive income (loss)	(44)	(3)	40	(70)	(81)	36
Common stock dividends and dividend equivalents	(15)	(14)	(15)	(14)	(15)	(14)
Distributions to noncontrolling interests	(7)	(2)	(1)	(6)	(1)	(1)
Redeemable noncontrolling interests adjustment to redemption value			(1)	(63)	(1)	(1)
Stock compensation	5	7	8	5	4	4
Stock withheld for employees taxes			(8)			(7)
Balance	1,647	1,681	1,658	1,671	1,903	1,987
Common stock repurchases						(25)
Purchases of noncontrolling interests					(1)	(1)
Common Stock [Member]
Balance	2	2	2	2	2	2
Balance	2	2	2	2	2	2
Additional Paid-in Capital [Member]
Balance	2,244	2,237	2,229	2,435	2,431	2,427
Stock compensation	5	7	8	5	4	4
Balance	2,249	2,244	2,237	2,440	2,435	2,431
Retained Earnings [Member]
Balance	349	333	321	656	664	662
Net income (loss)	19	30	28	(88)	8	17
Common stock dividends and dividend equivalents	(15)	(14)	(15)	(14)	(15)	(14)
Redeemable noncontrolling interests adjustment to redemption value			(1)	(63)	(1)	(1)
Balance	353	349	333	491	656	664
Treasury Stock, Common [Member]
Balance	(8)	(8)		(216)	(216)	(184)
Stock withheld for employees taxes			(8)			(7)
Balance	(8)	(8)	(8)	(216)	(216)	(216)
Common stock repurchases						(25)
AOCI Attributable to Parent [Member]
Balance	(964)	(961)	(1,001)	(1,028)	(949)	(985)
Other comprehensive income (loss)	(43)	(3)	40	(67)	(79)	36
Balance	(1,007)	(964)	(961)	(1,095)	(1,028)	(949)
Noncontrolling Interest [Member]
Balance	58	55	52	54	55	53
Net income (loss)	8	5	4	4	3	4
Other comprehensive income (loss)	(1)			(3)	(2)
Distributions to noncontrolling interests	(7)	(2)	(1)	(6)	(1)	(1)
Balance	$ 58	$ 58	$ 55	$ 49	54	55
Purchases of noncontrolling interests					$ (1)	$ (1)