Note 15 - Changes in Other Comprehensive Loss, by Component (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]
Currency translation adjustments		$ 1	$ 3	$ 9	$ (4)
Unrealized losses on available-for-sale securities, before tax			(1)		(1)
Unrealized losses on available-for-sale securities, net of tax			(1)		(1)
Newly established prior service credit					4
Newly established net actuarial (loss) gain		(2)		(144)	5
Tax benefit		1		1
Newly established prior service credit and net actuarial (loss) gain, net of tax		(1)		(143)	9
Amortization of prior service credit	[1]	(2)	(2)	(4)	(4)
Amortization of actuarial gains	[1]		(1)	(1)	(1)
Recognition of gains due to settlements				(1)
Total reclassification adjustments		(2)	(3)	(6)	(5)
Tax provision		1	1	1	1
Reclassification adjustments, net of tax		(1)	(2)	(5)	(4)
Pension and other postretirement benefit plan obligation activity, net of tax		(2)	$ (2)	(148)	$ 5
Other comprehensive loss		$ (1)		$ (139)

[1] Reclassified to Total Net Periodic Benefit Cost - refer to Note 11, "Retirement Plans and Other Postretirement Benefits".