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Segment Information (Details)	Sep. 30, 2011
Segment Information [Abstract]
Number of reportable segments	1

X

- Definition

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.

+ Details

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

X

- Details

Name:	us-gaap_SegmentReportingAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration