Fair Value Measurements - Nextel Argentina Sale (Details) - Argentina - USD ($) $ in Millions	Sep. 11, 2015	Jan. 27, 2016	Dec. 31, 2015
Remaining equity interests	51.00%	51.00%
Purchase price	$ 178.0
Successor Company
Notes issued	85.0
Fair value of investment			$ 108.1
Purchase price	$ 178.0

The fair value of notes issued in noncash investing and financing activities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586

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Balance Type:	credit
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