Labor Union Contracts (Details)	9 Months Ended
Sep. 30, 2012 item
Labor Union Contracts
Approximate percentage of employees who are members of bargaining units	60.00%
Number of employees covered under the agreement	13,000
Minimum advance notice period	1 day

Represents the percentage of employees who are members of bargaining units represented by the Communications Workers of America and the International Brotherhood of Electrical Workers.

No definition available.

Name:	ctq_PercentageOfEmployeesWhoAreMembersOfVariousBargainingUnits
Namespace Prefix:	ctq_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration