Balance Sheet Details Restricted Cash (Policies)
12 Months Ended
Dec. 31, 2014
Cash and Cash Equivalents [Abstract]  
Restricted Cash Policy [Policy Text Block]
Restricted Cash.  
As of December 31, 2014, we had $107.8 million in restricted cash, the majority of which was included in other long-term assets and was comprised of cash held in escrow in connection with the sale of Nextel Peru, judicial deposits in Nextel Brazil and a debt service reserve account related to Nextel Mexico's equipment financing facility.
As of December 31, 2013, we had $120.5 million in restricted cash, the majority of which was included in other long-term assets and was comprised of cash held in escrow in connection with the sale of Nextel Peru, a debt service reserve account related to Nextel Mexico's equipment financing facility, judicial deposits in Nextel Brazil, purchase commitments for handsets and cash collateral supporting the lease of our corporate headquarters.