CONSOLIDATED BALANCE SHEETS (Successor [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2013
Successor [Member]
Current assets
Cash and cash equivalents	$ 4,010		$ 4,970		$ 6,364
Short-term investments	166		1,220
Accounts and notes receivable, net	2,290		3,607
Device and accessory inventory	1,359		982
Deferred tax assets	62		128
Prepaid expenses and other current assets	1,890		672
Total current assets	9,777		11,579
Property, plant and equipment, net	19,721		16,299
Intangible assets
Goodwill	6,575		6,383		6,434
FCC licenses and other	39,987		41,978
Definite-lived intangible assets, net	5,893		7,558
Other assets	1,077		892
Total assets	83,030		84,689		86,095
Current liabilities
Accounts payable	4,347	[1]	3,163	[1]
Accrued expenses and other current liabilities	5,293		5,544
Current portion of long-term debt, financing and capital lease obligations	1,300		991
Total current liabilities	10,940		9,698
Long-term debt, financing and capital lease obligations	32,531		31,787
Deferred tax liabilities	13,898		14,207
Other liabilities	3,951		3,685
Total liabilities	61,320		59,377
Commitments and contingencies
Stockholders' equity
Common stock	40		39
Paid-in capital	27,468		27,354
Treasury shares, at cost	(7)		0
Accumulated deficit	(5,383)		(2,038)
Accumulated other comprehensive loss	(408)		(43)
Total stockholders' equity	21,710		25,312		25,584
Total liabilities and stockholders' equity	$ 83,030		$ 84,689

[1] Includes liabilities in the amounts of $90 million and $91 million as of March 31, 2015 and 2014, respectively, for checks issued in excess of associated bank balances but not yet presented for collection.