Note 10 - Property, Plant and Equipment, Net of Accumulated Depreciation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Interest Costs Capitalized	$ 10	$ 11	$ 21	$ 22
Precious Metals	3,000		3,000		$ 3,100
Depletion	$ 5	$ 5	$ 12	$ 13