Severance, Exit Costs and Asset Impairments Severance, Exit Costs and Asset Impairments (Schedule of Severance and Exit Costs Liability) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended				6 Months Ended				6 Months Ended			6 Months Ended						12 Months Ended				6 Months Ended	12 Months Ended				6 Months Ended			12 Months Ended			6 Months Ended	12 Months Ended	6 Months Ended		12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended
	Dec. 31, 2013	Dec. 30, 2012 Successor [Member]	Dec. 31, 2013 Successor [Member]		Dec. 31, 2013 Successor [Member]	Dec. 31, 2012 Successor [Member]	Dec. 31, 2011 Successor [Member]	Jul. 10, 2013 Successor [Member]	Dec. 31, 2013 Successor [Member] Lease [Member]		Jul. 10, 2013 Successor [Member] Lease [Member]		Dec. 31, 2013 Successor [Member] Access [Member]		Jul. 10, 2013 Successor [Member] Access [Member]	Dec. 31, 2013 Successor [Member] Wireless [Member]	Dec. 31, 2013 Successor [Member] Wireless [Member] Lease [Member]	Dec. 31, 2013 Successor [Member] Wireline [Member]	Dec. 31, 2013 Successor [Member] Wireline [Member] Lease [Member]	Jul. 10, 2013 Predecessor [Member]		Dec. 31, 2012 Predecessor [Member]	Dec. 31, 2011 Predecessor [Member]		Dec. 31, 2010 Predecessor [Member]	Jul. 10, 2013 Predecessor [Member] Lease [Member]	Dec. 31, 2012 Predecessor [Member] Lease [Member]		Dec. 31, 2011 Predecessor [Member] Lease [Member]	Dec. 31, 2010 Predecessor [Member] Lease [Member]	Jul. 10, 2013 Predecessor [Member] Employee Severance [Member]	Jul. 10, 2013 Predecessor [Member] Access [Member]		Dec. 31, 2012 Predecessor [Member] Access [Member]		Dec. 31, 2011 Predecessor [Member] Access [Member]	Jul. 10, 2013 Predecessor [Member] Wireless [Member]	Dec. 31, 2011 Predecessor [Member] Wireless [Member]	Jul. 10, 2013 Predecessor [Member] Wireless [Member] Lease [Member]		Dec. 31, 2011 Predecessor [Member] Wireless [Member] Lease [Member]	Jul. 10, 2013 Predecessor [Member] Wireless [Member] Access [Member]	Dec. 31, 2012 Predecessor [Member] Wireless [Member] Access [Member]	Jul. 10, 2013 Predecessor [Member] Wireline [Member]	Dec. 31, 2011 Predecessor [Member] Wireline [Member]	Jul. 10, 2013 Predecessor [Member] Wireline [Member] Access [Member]	Dec. 31, 2012 Predecessor [Member] Wireline [Member] Access [Member]	Dec. 31, 2013 Cost of products and services [Member] Wireline [Member] Access [Member]	Jul. 10, 2013 Cost of products and services [Member] Predecessor [Member] Access [Member]	Dec. 31, 2013 Restructuring Charges [Member] Wireless [Member] Access [Member]	Jul. 10, 2013 Restructuring Charges [Member] Predecessor [Member] Access [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			$ 1,138		$ 1,138			$ 1,176	$ 764		$ 933	[1]	$ 149		$ 189					$ 1,009		$ 244	$ 79		$ 94	$ 766	$ 190		$ 58	$ 87		$ 189		$ 43		$ 0
Supplemental Unemployment Benefits, Severance Benefits			225		225			54												54		11	21		7
Restructuring Reserve, Translation and Other Adjustment																				131						131					0	0
Restructuring Charges			328						56	[2]			53	[3]			54		2	687		240	28				196	[4]				151	[5]	44	[6]				478	[7]	0	133	21			18	23	19	35	34	116
Restructuring Reserve, Settled with Cash			(366)																	(53)		(75)	(43)
Severance Costs	165		219	[8]												191		28		58	[9]	0	28	[10]													55	25						3	3
Restructuring reserved settled with cash and other adjustments			(93)						(225)																	(33)	(64)		(29)			(5)		(1)
Payments for Postemployment Benefits			(48)																	(15)		(10)	(14)
Asset Impairment Charges		$ 0			$ 0	$ 102	$ 78													$ 0		$ 102	$ 78

[1] (7)The July 11, 2013 opening balance takes into account purchase price adjustments as it relates to the SoftBank Merger.

[2] (8)For the year ended December 31, 2013, we recognized costs of $56 million ($54 million Wireless, $2 million Wireline).

[3] (10)For the year ended December 31, 2013, $19 million (solely attributable to Wireline) was recognized as "Cost of services and products" and $34 million (solely attributable to Wireless) was recognized in "Severance, exit costs and assets impairments."

[4] (4)For the year ended December 31, 2012, we recognized costs of $196 million (solely attributable to our Wireless segment).

[5] (3)Of the $151 million ($133 million Wireless; $18 million Wireline) recognized for the 191-day period ended July 10, 2013, $35 million was recognized as "Cost of services and products" and $116 million was recognized in "Severance, exit costs and asset impairments."

[6] (5)For the year ended December 31, 2012, we recognized costs of $44 million ($21 million Wireless; $23 million Wireline) as "Cost of services and products."

[7] (1)For the 191-day period ended July 10, 2013, we recognized net costs of $478 million (solely attributable to our Wireless segment).

[8] (9)For the year ended December 31, 2013, we recognized costs of $219 million ($191 million Wireless, $28 million Wireline).

[9] (2)For the 191-day period ended July 10, 2013, we recognized costs of $58 million ($55 million Wireless, and $3 million was Wireline).

[10] (6)For the year ended December 31, 2011, we recognized costs of $28 million ($25 million Wireless; $3 million Wireline).