Note 18 - Changes in Other Comprehensive Income (Loss), by Component (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]
Currency translation adjustments		$ (20)		$ (7)	$ 14
Newly established net actuarial gain (loss)		1	$ (1)	1	(1)
Newly established net actuarial gain (loss), net of tax		1	(1)	1	(1)
Amortization of prior service credit	[1]	(2)	(2)	(4)	(4)
Amortization of actuarial (gains) losses	[1]	1		2	(1)
Recognition of losses due to settlement				1
Total reclassification adjustments		(1)	(2)	(1)	(5)
Reclassification adjustments, net of tax		(1)	(2)	(1)	(5)
Pension and other postretirement benefit plan changes, net of tax			(3)		(6)
Other comprehensive (loss) income, net of tax		$ (20)	$ (3)	$ (7)	$ 8

[1] Reclassified to Total Net Periodic Benefit Cost - refer to Note 14, "Retirement Plans and Other Postretirement Benefits".