Summary of Significant Accounting Policies (Details 6)	6 Months Ended
Jun. 29, 2014 item
Revenue
Number of long-term contracts/programs	2
Number of claims recorded	0

Represents the number of long-term government contracts/programs with interrelated multiple elements (procurement of parts, manufacturing and refurbishment services) using concepts of proportionate performance under which the entity accounts for revenues and earnings.

No definition available.

Name:	coltdef_NumberOfLongTermGovernmentContractsUnderWhichRevenueAccounted
Namespace Prefix:	coltdef_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration