Proposed Business Transactions and Acquisitions (Details) (USD $)	0 Months Ended
	Dec. 31, 2012	Mar. 31, 2013	Feb. 26, 2013 draws	Dec. 17, 2012	Nov. 06, 2012 Customers	Oct. 15, 2012 SoftBank [Member] years	Oct. 22, 2012 Sprint Nextel [Member]	Oct. 15, 2012 Sprint Nextel [Member]	Oct. 15, 2012 New Sprint [Member]	Nov. 06, 2012 Minimum [Member]	Nov. 06, 2012 Maximum [Member]	Mar. 31, 2013 Secured Equipment Credit Facility [Member] Line of Credit [Member]	Dec. 31, 2012 Secured Equipment Credit Facility [Member] Line of Credit [Member]	Mar. 31, 2013 Secured Equipment Credit Facility [Member] Line of Credit [Member] Sprint Nextel [Member]
Business Acquisition [Line Items]
Convertible Debt							$ 3,100,000,000
Debt Instrument, Interest Rate, Stated Percentage							1.00%
Stock Issued During Period, Shares, Conversion of Convertible Securities							590,476,190
Debt Instrument, Convertible, Conversion Price							$ 5.25
Percentage of ownership which will be converted from convertible debt							16.40%
Additional Capitalization, Long-term Debt and Equity									17,000,000,000
Amount of consideration to be distributed to stockholders								12,100,000,000
Business combination cost of acquired entity partial cash to be paid									4,900,000,000
Sale of Stock, Price Per Share								$ 7.30
Exercise period for warrant						5
Class of Warrant or Right, Number of Securities Called by Warrants or Rights									54,579,924
Business Acquisition, Share Price				$ 2.97					$ 5.25
Proceeds from Warrant Exercises									300,000,000
Business Acquisition, Percentage of Voting Interests Acquired						70.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners						30.00%
Line of Credit Facility, Amount Outstanding												445,000,000	296,000,000	445,000,000
Number of customers to be acquired					585,000
Business Acquisition, Cost Of Other Acquired Spectrum, Cash to Be Paid					480,000,000
Business Acquisition, Network Shutdown Costs to be paid by the Company										130,000,000	150,000,000
Business Acquisition, Maximum Network Shutdown Costs to be paid by the Company on an undiscounted basis					200,000,000
Payments to Acquire Equity Method Investments				2,200,000,000
Exchangeable notes, related party	0	80,000,000		800,000,000
Interest rate of exchange note, related party	1.00%
Exchangeable Note, Conversion Price				$ 1.50
Agreement Term	10 months
Number of installments			3
Amount of draws that became eligible as a result of the amended agreement to not require a build out plan			$ 240,000,000