Goodwill, Customer Relationships and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill, customer relationships and other intangible assets

Goodwill, customer relationships and other intangible assets consisted of the following:

		Successor
	Weighted Average of Remaining Lives	December 31, 2013		December 31, 2012
		(Dollars in millions)
Goodwill	N/A	$	9,354	9,354
Customer relationships, less accumulated amortization of $2,012 and $1,320	7.3 years	3,687		4,379
Other intangible assets subject to amortization Capitalized software, less accumulated amortization of $994 and $704	3.0 years	1,008		1,212

Summary of amortization expense

Total amortization expense for intangible assets was as follows:

	Successor				Predecessor
	Year Ended December 31, 2013		Year Ended December 31, 2012	Nine Months Ended December 31, 2011	Three Months Ended March 31, 2011
	(Dollars in millions)
Amortization expense for intangible assets	$	1,029	1,115	952	58

Schedule of estimated amortization expense for intangible assets

The estimated future amortization expense for intangible assets is as follows:

	(Dollars in millions)
Year ending December 31,
2014	$	894
2015	821
2016	743
2017	667
2018	581
2019 and thereafter	989