XML 46 R36.htm IDEA: XBRL DOCUMENT v2.4.0.6
T-Mobile Transaction (Details) (USD $)
12 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Dec. 31, 2012
Pending Business Combination Agreement
Dec. 31, 2012
Business Combination Agreement Combined Entity
Pending Business Combination Agreement
Business Acquisition        
Common stock, par value $ 0.0001 $ 0.0001   $ 0.00001
Stock split, conversion ratio     0.5  
Capital distribution payment     $ 1,500,000,000  
Stock issued to parent, percentage ownership transferred     74.00%  
Contingent termination loss     150,000,000  
Contingent termination gain     $ 250,000,000