v3.26.1
FAIR VALUE MEASUREMENTS - Investments Measured at Fair Value Based on NAV Per Share (Details) - Enpro Inc. Retirement Savings Plan [Member] - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Collective Trust Funds - Target Date [Member]    
FAIR VALUE MEASUREMENTS [Abstract]    
Description Target Date Target Date
Fair Value $ 173,377,184 $ 153,849,810
Unfunded Commitments $ 0 $ 0
Redemption Frequency (if currently eligible) Daily Daily
Collective Trust Funds - Income [Member]    
FAIR VALUE MEASUREMENTS [Abstract]    
Description Income Income
Fair Value $ 20,460,497 $ 12,805,582
Unfunded Commitments $ 0 $ 0
Redemption Frequency (if currently eligible) Daily Daily
Collective Trust Funds - Stable Value [Member]    
FAIR VALUE MEASUREMENTS [Abstract]    
Description Stable Value Stable Value
Fair Value $ 17,590,673 $ 17,635,578
Unfunded Commitments $ 0 $ 0
Redemption Frequency (if currently eligible) Daily Daily
Collective Trust Funds - Small-Mid Cap [Member]    
FAIR VALUE MEASUREMENTS [Abstract]    
Description Small-Mid Cap Small-Mid Cap
Fair Value $ 12,607,640 $ 15,212,469
Unfunded Commitments $ 0 $ 0
Redemption Frequency (if currently eligible) Daily Daily
Minimum [Member] | Collective Trust Funds - Target Date [Member]    
FAIR VALUE MEASUREMENTS [Abstract]    
Redemption Notice Period 1 day 1 day
Minimum [Member] | Collective Trust Funds - Income [Member]    
FAIR VALUE MEASUREMENTS [Abstract]    
Redemption Notice Period 1 day 1 day
Minimum [Member] | Collective Trust Funds - Stable Value [Member]    
FAIR VALUE MEASUREMENTS [Abstract]    
Redemption Notice Period 0 days 0 days
Minimum [Member] | Collective Trust Funds - Small-Mid Cap [Member]    
FAIR VALUE MEASUREMENTS [Abstract]    
Redemption Notice Period 0 days 0 days
Maximum [Member] | Collective Trust Funds - Target Date [Member]    
FAIR VALUE MEASUREMENTS [Abstract]    
Redemption Notice Period 5 days 5 days
Maximum [Member] | Collective Trust Funds - Income [Member]    
FAIR VALUE MEASUREMENTS [Abstract]    
Redemption Notice Period 5 days 5 days
Maximum [Member] | Collective Trust Funds - Stable Value [Member]    
FAIR VALUE MEASUREMENTS [Abstract]    
Redemption Notice Period 10 days 10 days
Maximum [Member] | Collective Trust Funds - Small-Mid Cap [Member]    
FAIR VALUE MEASUREMENTS [Abstract]    
Redemption Notice Period 10 days 10 days