v3.26.1
Fair Value Measurements - Fair Value Hierarchy (Details) - EBP INVSAL - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
EBP, Master Trust [Line Items]    
Total Investment at Fair Value $ 5,599,098 $ 4,477,625
Fair Value, Inputs, Level 1, Level 2, and Level 3    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value 1,095,256 535,861
Fair Value, Inputs, Level 1, Level 2, and Level 3 | Short-Term Investment Funds    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value 607,596 224,827
Fair Value, Inputs, Level 1, Level 2, and Level 3 | Preferred Stock    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value 387 387
Fair Value, Inputs, Level 1, Level 2, and Level 3 | Corning Common Stock    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value 487,273 310,647
Level 1    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value 1,094,869 535,474
Level 1 | Short-Term Investment Funds    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value 607,596 224,827
Level 1 | Preferred Stock    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value
Level 1 | Corning Common Stock    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value 487,273 310,647
Level 2    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value 0 0
Level 2 | Short-Term Investment Funds    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value 0 0
Level 2 | Preferred Stock    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value
Level 2 | Corning Common Stock    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value
Level 3    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value 387 387
Level 3 | Short-Term Investment Funds    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value
Level 3 | Preferred Stock    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value 387 387
Level 3 | Corning Common Stock    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value
NAV    
EBP, Master Trust [Line Items]    
Total Investment at Fair Value $ 4,503,842 $ 3,941,764