Income Taxes - Schedule of Income Tax Provisions and Rates (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Provision for income taxes	$ (80)	$ (3)	$ (219)	$ (124)
Effective tax rate	14.50%	(3.30%)	15.90%	33.00%

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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+ Details

CORNING INC /NY 10-Q