Reportable Segments (Tables)

6 Months Ended

Jun. 30, 2019

Reportable Segments [Abstract]

Reportable Segments

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Three months ended
June 30, 2019
Segment net sales	$	848	$	1,090	$	369	$	366	$	260	$	53	$	2,986
Depreciation (1)	$	149	$	60	$	35	$	32	$	12	$	12	$	300
Research, development and ‎   engineering expenses (2)	$	29	$	54	$	41	$	28	$	5	$	57	$	214
Income tax (provision) ‎    benefit (3)	$	(55)	$	(43)	$	(18)	$	(17)	$	(11)	$	18	$	(126)
Segment net income (loss) (4)	$	213	$	158	$	67	$	65	$	40	$	(68)	$	475

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Three months ended
June 30, 2018
Segment net sales	$	780	$	1,023	$	343	$	317	$	245	$	51	$	2,759
Depreciation (1)	$	146	$	53	$	35	$	30	$	13	$	10	$	287
Research, development and ‎   engineering expenses (2)	$	27	$	51	$	41	$	29	$	5	$	59	$	212
Income tax (provision) ‎    benefit (3)	$	(51)	$	(41)	$	(17)	$	(14)	$	(8)	$	21	$	(110)
Segment net income (loss) (4)	$	192	$	150	$	64	$	54	$	31	$	(78)	$	413

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Six months ended
June 30, 2019
Segment net sales	$	1,666	$	2,154	$	678	$	728	$	503	$	107	$	5,836
Depreciation (1)	$	301	$	119	$	72	$	63	$	25	$	23	$	603
Research, development and ‎   engineering expenses (2)	$	55	$	110	$	82	$	58	$	10	$	112	$	427
Income tax (provision) ‎    benefit (3)	$	(110)	$	(82)	$	(31)	$	(32)	$	(19)	$	37	$	(237)
Segment net income (loss) (4)	$	421	$	300	$	116	$	120	$	71	$	(140)	$	888

	Display		Optical		Specialty		Environmental		Life		All
	Technologies		Communications		Materials		Technologies		Sciences		Other		Total
Six months ended
June 30, 2018
Segment net sales	$	1,525	$	1,909	$	621	$	639	$	477	$	101	$	5,272
Depreciation (1)	$	290	$	105	$	68	$	59	$	27	$	21	$	570
Research, development and ‎   engineering expenses (2)	$	50	$	100	$	80	$	58	$	10	$	116	$	414
Income tax (provision) ‎    benefit (3)	$	(100)	$	(71)	$	(29)	$	(28)	$	(15)	$	41	$	(202)
Segment net income (loss) (4)	$	377	$	259	$	110	$	106	$	58	$	(152)	$	758

(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)Income tax provision (benefit) reflects a tax rate of 21%.

(4)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 segment net income to consolidated net income below.

Reconciliation of Reportable Segment and All Other Net Sales to Consolidated Net Sales

	Three months ended				Six months ended
	June 30,				June 30,
	2019		2018		2019		2018
Net sales of reportable segments and All Other	$	2,986	$	2,759	$	5,836	$	5,272
Impact of foreign currency movements (1)		(46)		(12)		(84)		(25)
Net sales	$	2,940	$	2,747	$	5,752	$	5,247

(1)This amount primarily represents the impact of foreign currency adjustments in the Display Technologies and Environmental Technologies segments.

Reconciliation of Reportable Segment Net Income to Consolidated Net Income (Loss)

	Three months ended				Six months ended
	June 30,				June 30,
	2019		2018		2019		2018
Net income of reportable segments	$	543	$	491	$	1,028	$	910
Net loss of All Other		(68)		(78)		(140)		(152)
Unallocated amounts:
Impact of foreign currency movements		(36)		(32)		(73)		(68)
(Loss) gain on foreign currency hedges ‎    related to translated earnings		(107)		458		77		(164)
Translation (loss) gain on Japanese yen-denominated debt		(36)		37		(21)		(2)
Litigation, regulatory and other legal matters								(132)
Research, development, and engineering expenses		(35)		(30)		(71)		(68)
Equity in earnings of affiliated companies (1)		28		30		54		69
Amortization of intangibles		(28)		(22)		(57)		(41)
Interest expense, net		(49)		(34)		(94)		(73)
Income tax benefit (provision)		2		(16)		37		(48)
Other corporate items		(122)		(66)		(149)		(82)
Net income	$	92	$	738	$	591	$	149

(1)Primarily represents the equity earnings of HSG.