Higher Education Emergency Relief Fund (Details) $ in Millions	12 Months Ended
Sep. 30, 2022 USD ($) student
Unusual or Infrequent Items, or Both [Abstract]
Amount of student's grants awarded, CRRSAA \| $	$ 7.0
Awards granted to students \| student	15,500

Unusual Or Infrequent Items Or Both Amount Of Student Grants Awarded CRRSAA

No definition available.

Name:	uti_UnusualOrInfrequentItemsOrBothAmountOfStudentGrantsAwardedCRRSAA
Namespace Prefix:	uti_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration