Guarantees, Indemnities and Warranties - Additional Information (Details) $ in Millions	Dec. 31, 2025 USD ($)
Guarantees [Abstract]
Guarantees, letters of credit and similar arrangements outstanding	$ 219.1

Guarantees, letters of credit and similar arrangements outstanding.

No definition available.

Name:	itt_GuaranteesLettersOfCreditAndSimilarArrangementsOutstanding
Namespace Prefix:	itt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant