Schedule II - Valuation Accounts and Reserves

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

Corning Incorporated and Subsidiary Companies

Schedule II – Valuation Accounts and Reserves

(in millions)

Year ended December 31, 2016	Balance at beginning of period		Additions		Net deductions and other		Balance at end of period
Doubtful accounts and allowances	$	48	$	11			$	59
Deferred tax valuation allowance	$	238	$	55	$	23	$	270
Accumulated amortization of purchased intangible assets	$	265	$	64	$	4	$	325
Reserves for accrued costs of business restructuring	$	3	$	15	$	13	$	5

Year ended December 31, 2015	Balance at beginning of period		Additions		Net deductions and other		Balance at end of period
Doubtful accounts and allowances	$	47	$	1			$	48
Deferred tax valuation allowance	$	298	$	30	$	90	$	238
Accumulated amortization of purchased intangible assets	$	216	$	49			$	265
Reserves for accrued costs of business restructuring	$	44			$	41	$	3

Year ended December 31, 2014	Balance at beginning of period		Additions		Net deductions and other		Balance at end of period
Doubtful accounts and allowances	$	28	$	19			$	47
Deferred tax valuation allowance	$	286	$	186	$	174	$	298
Accumulated amortization of purchased intangible assets	$	185	$	31			$	216
Reserves for accrued costs of business restructuring	$	44	$	49	$	49	$	44