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Schedule II - Valuation Accounts and Reserves | 12 Months Ended
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Dec. 31, 2018
Valuation Accounts and Reserves [Abstract] |
Schedule II - Valuation Accounts and Reserves | Corning Incorporated and S ubsidiary Companies Schedule II – Valuation and Qualifying Accounts (in millions) ﻿ ﻿
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﻿Year ended December 31, 2018 |  | Balance at beginning of period |  | Additions |  | Net deductions and other |  | Balance at end of period
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﻿Doubtful accounts and allowances |  | $ | 60 |  | $ | 4 |  |  |  |  | $ | 64
﻿Deferred tax valuation allowance |  | $ | 456 |  | $ | 17 |  | $ | 156 |  | $ | 317
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﻿Year ended December 31, 2017 |  | Balance at beginning of period |  | Additions |  | Net deductions and other |  | Balance at end of period
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﻿Doubtful accounts and allowances |  | $ | 59 |  | $ | 1 |  |  |  |  | $ | 60
﻿Deferred tax valuation allowance |  | $ | 270 |  | $ | 241 |  | $ | 55 |  | $ | 456
﻿Reserves for accrued costs of business restructuring |  | $ | 5 |  |  |  |  | $ | 5 |  |  |
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﻿Year ended December 31, 2016 |  | Balance at beginning of period |  | Additions |  | Net deductions and other |  | Balance at end of period
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﻿Doubtful accounts and allowances |  | $ | 48 |  | $ | 11 |  |  |  |  | $ | 59
﻿Deferred tax valuation allowance |  | $ | 238 |  | $ | 55 |  | $ | 23 |  | $ | 270
﻿Reserves for accrued costs of business restructuring |  | $ | 3 |  | $ | 15 |  | $ | 13 |  | $ | 5
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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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