Note 6 - Stockholders' Equity - Changes In Equity (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Balance	$ 1,903	$ 1,987	$ 1,975	$ 1,939	$ 1,870	$ 1,834
Net income (loss)	(84)	11	21	52	57	72
Other comprehensive income (loss)	(70)	(81)	36	(28)	28	(20)
Common stock dividends and dividend equivalents	(14)	(15)	(14)	(15)	(15)	(14)
Common stock share repurchases			(25)	(23)
Distributions to noncontrolling interests	(6)	(1)	(1)	(8)	(2)
Purchase of noncontrolling interests		(1)	(1)
Redeemable noncontrolling interests adjustment to redemption value	(63)	(1)	(1)	(2)	(4)	(4)
Stock compensation	5	4	4	5	5	7
Stock withheld for employees taxes			(7)			(5)
Sale of noncontrolling interests					(1)
Other					1
Deconsolidation of non-wholly owned subsidiary				(8)
Balance	1,671	1,903	1,987	1,912	1,939	1,870
Common Stock [Member]
Balance	2	2	2	2	2	2
Balance	2	2	2	2	2	2
Additional Paid-in Capital [Member]
Balance	2,435	2,431	2,427	2,420	2,415	2,408
Stock compensation	5	4	4	5	5	7
Balance	2,440	2,435	2,431	2,425	2,420	2,415
Retained Earnings [Member]
Balance	656	664	662	617	583	530
Net income (loss)	(88)	8	17	48	53	71
Common stock dividends and dividend equivalents	(14)	(15)	(14)	(15)	(15)	(14)
Redeemable noncontrolling interests adjustment to redemption value	(63)	(1)	(1)	(2)	(4)	(4)
Balance	491	656	664	648	617	583
Treasury Stock [Member]
Balance	(216)	(216)	(184)	(161)	(161)	(156)
Common stock share repurchases			(25)	(23)
Stock withheld for employees taxes			(7)			(5)
Balance	(216)	(216)	(216)	(184)	(161)	(161)
AOCI Attributable to Parent [Member]
Balance	(1,028)	(949)	(985)	(1,007)	(1,044)	(1,026)
Other comprehensive income (loss)	(67)	(79)	36	(28)	37	(18)
Balance	(1,095)	(1,028)	(949)	(1,035)	(1,007)	(1,044)
Noncontrolling Interest [Member]
Balance	54	55	53	68	75	76
Net income (loss)	4	3	4	4	4	1
Other comprehensive income (loss)	(3)	(2)			(9)	(2)
Distributions to noncontrolling interests	(6)	(1)	(1)	(8)	(2)
Purchase of noncontrolling interests		(1)	(1)
Sale of noncontrolling interests					(1)
Other					1
Deconsolidation of non-wholly owned subsidiary				(8)
Balance	$ 49	$ 54	$ 55	$ 56	$ 68	$ 75