Income Taxes (Narrative) (Details) (USD $)	6 Months Ended	9 Months Ended		0 Months Ended	3 Months Ended	6 Months Ended		9 Months Ended	3 Months Ended	9 Months Ended
	Jul. 10, 2013	Sep. 30, 2013	Dec. 31, 2012	Jul. 10, 2013 Predecessor [Member]	Sep. 30, 2012 Predecessor [Member]	Jul. 10, 2013 Predecessor [Member]	Jun. 30, 2012 Predecessor [Member]	Sep. 30, 2012 Predecessor [Member]	Sep. 30, 2013 Successor [Member]	Sep. 30, 2013 Successor [Member]
Income Tax Disclosure [Abstract]
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance						$ 1,410,000,000	$ 1,210,000,000			$ 327,000,000
Deferred Tax Assets, Valuation Allowance		7,000,000,000	5,700,000,000
Income tax expense	1,600,000,000			1,508,000,000	47,000,000	1,601,000,000	110,000,000	110,000,000	90,000,000	30,000,000
Gain on previously-held equity interests				2,926,000,000	0	2,926,000,000		0	0	0
FCC License Amortization Period for Tax Purposes In Years		15 years
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount		33,000,000
Unrecognized tax benefit		$ 183,000,000	$ 171,000,000