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