Reportable Segments (Tables)

3 Months Ended

Mar. 31, 2025

Segment Reporting [Abstract]

Schedule of Differences between Reported Amount and Reporting Currency Denominated Amount

Constant-currency rates used are as follows and are applied to the respective periods presented and to all foreign exchange exposures during the period, even though the Company may be less than 100% hedged:

Currency	Japanese yen	South Korean won	Chinese yuan	New Taiwan dollar	Euro	Mexican peso
2024 Rate	¥107	₩1,175	¥6.7	NT$31	€0.81	MX$20
2025 Rate	¥120	₩1,250	¥6.9	NT$31	€0.88	MX$21

Schedule of Segment Reporting Information, by Segment

The following provides selected segment information as described above:

Segment information (in millions):

	Optical Communications		Display		Specialty Materials		Automotive		Life Sciences		Hemlock and Emerging Growth Businesses		Total
Three months ended March 31, 2025
Segment net sales	$	1,355	$	905	$	501	$	440	$	234	$	244	$	3,679
Less:
Research, development and     engineering expenses (1)	77		25		67		35		6		26		236
Depreciation (2)	65		102		35		41		16		30		289
Other segment items (3)	954		471		305		278		195		206		2,409
Income tax provision (benefit) (4)	58		64		20		18		4		(2)		162
Segment net income (loss)	$	201	$	243	$	74	$	68	$	13	$	(16)	$	583
Investment in affiliated companies,    at equity	$	5	$	91	$	17	$	—	$	—	$	186	$	299
Segment assets (5)	$	3,768	$	6,613	$	2,506	$	2,412	$	767	$	1,907	$	17,973
Capital expenditures	$	97	$	46	$	31	$	12	$	3	$	50	$	239

	Optical Communications		Display		Specialty Materials		Automotive		Life Sciences		Hemlock and Emerging Growth Businesses		Total
Three months ended March 31, 2024
Segment net sales	$	930	$	872	$	454	$	491	$	236	$	275	$	3,258
Less:
Research, development and     engineering expenses (1)	65		26		60		38		6		21		216
Depreciation (2)	66		116		36		43		17		27		305
Other segment items (3)	671		476		303		311		196		202		2159
Income tax provision (4)	28		53		11		21		4		8		125
Segment net income	$	100	$	201	$	44	$	78	$	13	$	17	$	453
Investment in affiliated companies,    at equity	$	4	$	98	$	15	$	—	$	3	$	181	$	301
Segment assets (5)	$	3,326	$	7,616	$	2,514	$	2,513	$	787	$	1,680	$	18,436
Capital expenditures	$	36	$	73	$	33	$	9	$	5	$	30	$	186

(1)Research, development and engineering expenses include direct project spending that is identifiable to a segment.

(2)Depreciation expense for Corning’s reportable segments includes an allocation of depreciation of corporate property not specifically identifiable to a segment.

(3)Other segment items for each reportable segment primarily includes the cost of materials, salaries, wages and benefits, including variable compensation, and selling, general and administrative expenses.

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

(5)Segment assets include inventory, accounts receivable, property, plant and equipment, net of accumulated depreciation and associated equity companies.

Schedule of Reconciliation of Revenue from Segments to Consolidated

The following table presents a reconciliation of net sales of reportable segments to consolidated net sales (in millions):

	Three months ended March 31,
	2025		2024
Net sales of reportable segments	$	3,435	$	2,983
Net sales of Hemlock and Emerging Growth Businesses	244		275
Impact of constant-currency reporting (1)	(227)		(283)
Consolidated net sales	$	3,452	$	2,975

(1)This amount primarily represents the impact of foreign currency adjustments in the Display segment.

Schedule of Reconciliation of Net Income (Loss) from Segments to Consolidated

The following table presents a reconciliation of net income of reportable segments to consolidated net income (in millions):

	Three months ended March 31,
	2025		2024
Net income of reportable segments	$	599	$	436
Net (loss) income of Hemlock and Emerging Growth Businesses	(16)		17
Unallocated amounts:
Impact of constant-currency reporting	(180)		(226)
Translated earnings contract (loss) gain, net	(101)		39
Translation (loss) gain on Japanese yen-denominated debt, net	(43)		81
Research, development, and engineering expenses	(34)		(42)
Amortization of intangibles	(28)		(30)
Interest expense, net	(63)		(61)
Income tax benefit	107		54
Restructuring, impairment and other charges and credits	7		9
Other corporate items	(63)		(52)
Net income	$	185	$	225