Note 9 - Investments - Results of Operations (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Dow Corning Corporation [Member]
Net sales		$ 898	$ 1,424	$ 2,215	$ 2,788
Gross profit	[1]	238	364	588	722
Net income attributable to Dow Corning	[2]	52	113	163	298
Income (Loss) from Equity Method Investments		26	57	82	149
Income (Loss) from Equity Method Investments		$ 41	$ 62	$ 100	$ 156

[1] Gross profit for the three and six months ended June 30, 2016 includes research and development costs of $43 million and $100 million (2015: $63 million and $125 million).

[2] In the first half of 2015 Dow Corning's net income included a pre-tax gain of $178 million on the settlement of long-term sales agreements.