Segment Information (Details)	Dec. 31, 2011
Segment Information [Abstract]
Number of reportable segments	1

A component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	ftr_NumberOfReportableSegments
Namespace Prefix:	ftr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant