Commitments and Contingencies (Narrative) (Details) (USD $)	0 Months Ended		3 Months Ended
	Apr. 19, 2012	Jun. 30, 2014	Jun. 30, 2014 Successor [Member]
Commitments and Contingencies [Line Items]
Sales receipts alleged to not be reported, amount	$ 100,000,000
Minimum spectrum reconfiguration obligations		2,800,000,000
Letter of Credit, Minimum		850,000,000
Licensees reimbursed share of costs			95,000,000
Total Payments directly attributable to performance under Report and Order		3,400,000,000
Payments directly attributable to performance under report and order, net change related to FCC licenses			38,000,000
Maximum amount of the guarantee liability		$ 406,000,000