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Note 8 - Acquisitions (Details) - Fair Value of Samsung Corning Precision Materials at Acquisition Date - Samsung Corning Precision Materials Co., Ltd. [Member] - USD ($) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 15, 2014 | Dec. 31, 2014 | Dec. 29, 2015
Note 8 - Acquisitions (Details) - Fair Value of Samsung Corning Precision Materials at Acquisition Date [Line Items] |  |  |  |
Ownership percentage | 42.50% |  |  |
Ownership percentage | 57.50% |  |  |
Ownership percentage | 100.00% |  |  |
Fair value based on $1.9 billion consideration transferred | $ 1,911 |  |  |
Fair value based on $1.9 billion consideration transferred | 2,588 |  |  |
Fair value based on $1.9 billion consideration transferred | 4,499 |  |  |
Less contingent consideration - receivable | (196) |  |  | $ (458)
Less contingent consideration - receivable | (265) |  |  |
Less contingent consideration - receivable | (461) |  |  |
Net fair value of consideration @ 100% | 1,715 |  |  |
Net fair value of consideration @ 100% | 2,323 | $ 2,323 | [1] |
Net fair value of consideration @ 100% | 4,038 | $ 4,038 |  |
Corning’s loss on royalty contract | (136) |  |  |
Corning’s loss on royalty contract | (184) |  |  |
Corning’s loss on royalty contract | (320) |  |  |
Fair value post-acquisition | 1,579 |  |  |
Fair value post-acquisition | 2,139 |  |  |
Fair value post-acquisition | 3,718 |  |  |
Corning’s fair value 57.5% post-acquisition | 2,139 |  |  |
Total fair value at January 15, 2014 | $ 3,718 |  |  |
[1] | As Corning was a 57.5% shareholder at the date of acquisition, immediately preceding the acquisition of Samsung Corning Precision Materials, Corning recognized an asset and respective gain as part of the calculation of its previously held equity investment which included approximately $184 million attributed to its economic interest in the royalty contract.

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