Business and Summary of Significant Accounting Principles (Allocation of Total Consideration Transferred to ACS) (Details) $ in Thousands	Feb. 02, 2015 USD ($)
Accounting Policies [Abstract]
Total consideration transferred to ACS	$ 304,838
Allocation of consideration between wireless assets and non-controlling interest acquired:
AWN non-controlling interest	303,831
Property and equipment	746
Other intangible assets	261
Total consideration	$ 304,838

The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration