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Note 17 - Reportable Segments - Reportable Segments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Operating Segments [Member] | Display Technologies [Member] |  |  |  |  |
Net sales |  | $ 801 | $ 789 | $ 1,506 | $ 1,597
Depreciation | [1] | 149 | 152 | 300 | 308
Amortization of purchased intangibles |  |  |  |  |
Research, development and engineering expenses | [2] | 17 | 26 | 35 | 50
Restructuring, impairment and other charges |  | 2 |  | 16 |
Equity in earnings of affiliated companies |  |  | (3) |  | (5)
Income tax (provision) benefit |  | (86) | (136) | (179) | (268)
Net income | [3] | 204 | 303 | 413 | 597
Operating Segments [Member] | Optical Communications [Member] |  |  |  |  |
Net sales |  | 782 | 800 | 1,391 | 1,497
Depreciation | [1] | 43 | 43 | 84 | 81
Amortization of purchased intangibles |  | 8 | 11 | 15 | 17
Research, development and engineering expenses | [2] | 36 | 35 | 73 | 68
Restructuring, impairment and other charges |  |  |  | 6 | (1)
Equity in earnings of affiliated companies |  |  |  |  |
Income tax (provision) benefit |  | (39) | (37) | (50) | (66)
Net income | [3] | 77 | 77 | 94 | 94
Operating Segments [Member] | Environmental Technologies [Member] |  |  |  |  |
Net sales |  | 259 | 260 | 523 | 542
Depreciation | [1] | 33 | 32 | 65 | 61
Amortization of purchased intangibles |  |  |  |  |
Research, development and engineering expenses | [2] | 26 | 23 | 51 | 46
Restructuring, impairment and other charges |  |  |  | 5 |
Equity in earnings of affiliated companies |  |  |  |  |
Income tax (provision) benefit |  | (19) | (22) | (35) | (45)
Net income | [3] | 37 | 46 | 71 | 134
Operating Segments [Member] | Specialty Materials [Member] |  |  |  |  |
Net sales |  | 266 | 272 | 493 | 544
Depreciation | [1] | 27 | 27 | 55 | 53
Amortization of purchased intangibles |  |  |  |  |
Research, development and engineering expenses | [2] | 34 | 29 | 65 | 60
Restructuring, impairment and other charges |  | 12 | 3 | 24 | 3
Equity in earnings of affiliated companies |  |  |  |  |
Income tax (provision) benefit |  | (19) | (22) | (31) | (43)
Net income | [3] | 38 | 44 | 64 | 82
Operating Segments [Member] | Life Sciences [Member] |  |  |  |  |
Net sales |  | 215 | 211 | 419 | 408
Depreciation | [1] | 13 | 15 | 28 | 30
Amortization of purchased intangibles |  | 5 | 5 | 10 | 10
Research, development and engineering expenses | [2] | 6 | 6 | 12 | 11
Restructuring, impairment and other charges |  | 1 |  | 5 |
Equity in earnings of affiliated companies |  |  |  |  |
Income tax (provision) benefit |  | (8) | (9) | (14) | (17)
Net income | [3] | 17 | 18 | 29 | 34
Operating Segments [Member] | Other Segments [Member] |  |  |  |  |
Net sales |  | 37 | 11 | 75 | 20
Depreciation | [1] | 11 | 11 | 22 | 20
Amortization of purchased intangibles |  | 2 |  | 4 |
Research, development and engineering expenses | [2] | 45 | 44 | 92 | 89
Restructuring, impairment and other charges |  | 1 |  | 61 |
Equity in earnings of affiliated companies |  | (8) | 6 | (5) | 8
Income tax (provision) benefit |  | 23 | 21 | 66 | 44
Net income | [3] | (55) | (45) | (140) | (93)
Operating Segments [Member] |  |  |  |  |
Net sales |  | 2,360 | 2,343 | 4,407 | 4,608
Depreciation | [1] | 276 | 280 | 554 | 553
Amortization of purchased intangibles |  | 15 | 16 | 29 | 27
Research, development and engineering expenses | [2] | 164 | 163 | 328 | 324
Restructuring, impairment and other charges |  | 16 | 3 | 117 | 2
Equity in earnings of affiliated companies |  | (8) | 3 | (5) | 3
Income tax (provision) benefit |  | (148) | (205) | (243) | (395)
Net income | [3] | 318 | 443 | 531 | 848
Display Technologies [Member] |  |  |  |  |
Restructuring, impairment and other charges |  |  |  | 4 |
Optical Communications [Member] |  |  |  |  |
Restructuring, impairment and other charges |  |  |  | 6 |
Environmental Technologies [Member] |  |  |  |  |
Restructuring, impairment and other charges |  |  |  | 5 |
Specialty Materials [Member] |  |  |  |  |
Restructuring, impairment and other charges |  |  |  | 12 |
Life Sciences [Member] |  |  |  |  |
Restructuring, impairment and other charges |  |  |  | 3 |
Other Segments [Member] |  |  |  |  |
Restructuring, impairment and other charges |  |  |  | 40 |
Net sales |  | 2,360 | 2,343 | 4,407 | 4,608
Depreciation |  |  |  | 561 | 562
Amortization of purchased intangibles |  | 15 | 16 | 29 | 28
Research, development and engineering expenses |  | 192 | 191 | 382 | 380
Restructuring, impairment and other charges |  | (2) |  | 78 |
Equity in earnings of affiliated companies |  | 41 | 62 | 100 | 156
Income tax (provision) benefit |  | (504) | 110 | (808) | 196
Net income |  | $ 2,207 | $ 496 | $ 1,839 | $ 903
[1] | Depreciation expense for Corning's reportable segments includes an allocation of depreciation of corporate property not specifically identifiable to a segment.
[2] | Research, development and engineering expenses include direct project spending that is identifiable to a segment.
[3] | Many of Corning's administrative and staff functions are performed on a centralized basis. Where practicable, Corning charges these expenses to segments based upon the extent to which each business uses a centralized function. Other staff functions, such as corporate finance, human resources and legal, are allocated to segments, primarily as a percentage of sales. Expenses that are not allocated to the segments are included in the reconciliation of reportable net segment net income to consolidated net income below.

X
- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. Also included are the engineering expenses that are incurred while working on new product design, capacity, optimization programs, etc for products that are not currently being produced. + References No definition available. + Details
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