Note 15 - Fair Value Measurements (Details) - Major Categories of Financial Assets and Liabilities Measured on a Recurring Basis (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Non-current assets:
Other assets	$ 1,170		$ 473
Current Assets [Member] | Fair Value, Inputs, Level 1 [Member]
Current assets:
Short-term investments	762		531
Current Assets [Member] | Fair Value, Inputs, Level 2 [Member]
Current assets:
Other current assets	404	[1]	372	[2]
Current Assets [Member]
Current assets:
Short-term investments	762		531
Other current assets	404	[1]	372	[2]
Non Current Assets [Member] | Fair Value, Inputs, Level 2 [Member]
Non-current assets:
Other assets	516	[1],[3]	128	[2],[4]
Non Current Assets [Member] | Fair Value, Inputs, Level 3 [Member]
Non-current assets:
Other assets	273	[1],[3]
Non Current Assets [Member]
Non-current assets:
Other assets	789	[1],[3]	128	[2],[4]
Current Liabilities [Member] | Fair Value, Inputs, Level 2 [Member]
Current liabilities:
Other liabilities	29	[1]	9	[2]
Current Liabilities [Member]
Current liabilities:
Other liabilities	29	[1]	9	[2]
Non Current Liabilities [Member] | Fair Value, Inputs, Level 2 [Member]
Current liabilities:
Other liabilities	26	[1]	28	[2]
Non Current Liabilities [Member]
Current liabilities:
Other liabilities	$ 26	[1]	$ 28	[2]

[1] Derivative assets and liabilities include foreign exchange contracts, including forwards, zero-cost and purchased collars, together with interest rate swaps which are measured using observable quoted prices for similar assets and liabilities.

[2] Derivative assets and liabilities include foreign exchange contracts, including forwards and purchased collars, together with interest rate swaps which are measured using observable quoted prices for similar assets and liabilities.

[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.

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