Note 16 - Fair Value Measurements (Details) - Major Categories of Financial Assets and Liabilities Measured on a Recurring Basis - USD ($) $ in Millions		Dec. 31, 2015		Dec. 31, 2014
Non-current assets:
Other assets		$ 1,513		$ 1,722
Non-current liabilities:
Other liabilities (1)(2)		2,242		2,046
Current Assets [Member]
Current assets:
Short-term investments		100		759
Other current assets	[1]	522		687
Non Current Assets [Member]
Non-current assets:
Other assets		752	[1],[2]	1,330	[3]
Current Liabilities [Member]
Current liabilities:
Other liabilities	[1]	55		44
Non Current Liabilities [Member]
Current liabilities:
Other liabilities	[1]			15
Non-current liabilities:
Other liabilities (1)(2)	[1],[2]	98
Fair Value, Inputs, Level 1 [Member] | Current Assets [Member]
Current assets:
Short-term investments		100		759
Fair Value, Inputs, Level 2 [Member] | Current Assets [Member]
Current assets:
Other current assets	[1]	522		687
Fair Value, Inputs, Level 2 [Member] | Non Current Assets [Member]
Non-current assets:
Other assets		506	[1],[2]	885	[3]
Fair Value, Inputs, Level 2 [Member] | Current Liabilities [Member]
Current liabilities:
Other liabilities	[1]	55		44
Fair Value, Inputs, Level 2 [Member] | Non Current Liabilities [Member]
Current liabilities:
Other liabilities	[1]			15
Non-current liabilities:
Other liabilities (1)(2)	[1],[2]	88
Fair Value, Inputs, Level 3 [Member] | Non Current Assets [Member]
Non-current assets:
Other assets		246	[1],[2]	$ 445	[3]
Fair Value, Inputs, Level 3 [Member] | Non Current Liabilities [Member]
Non-current liabilities:
Other liabilities (1)(2)	[1],[2]	$ 10

[1] Derivative assets and liabilities include foreign exchange contracts which are measured using observable quoted prices for similar assets and liabilities.

[2] Other assets include asset-backed securities which are measured using observable quoted prices for similar assets and contingent consideration assets or liabilities which are measured by applying an option pricing model using projected future revenues.

[3] Other assets include asset-backed securities which are measured using observable quoted prices for similar assets and a contingent consideration asset which was measured by applying an option pricing model using projected future Corning Precision Materials' revenue.