Note 16 - Fair Value Measurements (Details) - Major Categories of Financial Assets and Liabilities Measured on a Recurring Basis (USD $) In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Non-current assets:
Other assets	$ 1,722		$ 473
Current Assets [Member] | Fair Value, Inputs, Level 1 [Member]
Current assets:
Short-term investments	759		531
Current Assets [Member] | Fair Value, Inputs, Level 2 [Member]
Current assets:
Other current assets	687	[1]	372	[1]
Current Assets [Member]
Current assets:
Short-term investments	759		531
Other current assets	687	[1]	372	[1]
Non Current Assets [Member] | Fair Value, Inputs, Level 2 [Member]
Non-current assets:
Other assets	885	[2]	128	[3]
Non Current Assets [Member] | Fair Value, Inputs, Level 3 [Member]
Non-current assets:
Other assets	445	[2]
Non Current Assets [Member]
Non-current assets:
Other assets	1,330	[2]	128	[3]
Current Liabilities [Member] | Fair Value, Inputs, Level 2 [Member]
Current liabilities:
Other liabilities	44	[1]	9	[1]
Current Liabilities [Member]
Current liabilities:
Other liabilities	44	[1]	9	[1]
Non Current Liabilities [Member] | Fair Value, Inputs, Level 2 [Member]
Current liabilities:
Other liabilities	15	[1]	28	[1]
Non Current Liabilities [Member]
Current liabilities:
Other liabilities	$ 15	[1]	$ 28	[1]

[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 a contingent consideration asset which was measured by applying an option pricing model using projected future Corning Precision Materials' revenue.

[3] Other assets include asset-backed securities which are measured using observable quoted prices for similar assets.