Note 13: Collaborative Arrangements (Details)	Jun. 30, 2012
Notes to Condensed Consolidated Financial Statements [Abstract]
Collaborators interests existing programs low end	4.00%
Collaborators interests existing programs high end	48.00%
Partner share individual program maximum	31.00%

High end of collaborators' interests in existing engine production programs.

No definition available.

Name:	utx_CollaboratorsInterestsExistingProgramsHighEnd
Namespace Prefix:	utx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant