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Goodwill, Customer Relationships and Other Intangible Assets
3 Months Ended
Mar. 31, 2012
Goodwill, Customer Relationships and Other Intangible Assets  
Goodwill, Customer Relationships and Other Intangible Assets

(3) Goodwill, Customer Relationships and Other Intangible Assets

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

 
  Successor  
 
  March 31, 2012   December 31, 2011  
 
  (Dollars in millions)
 

Goodwill

  $ 9,369     9,369  
           

Customer relationships, less accumulated amortization of $771 and $598

  $ 4,928     5,101  
           

Other intangible assets subject to amortization

             

Capitalized software, less accumulated amortization of $456 and $354

  $ 1,397     1,460  
           

        As of the successor date of March 31, 2012, the gross carrying amounts of goodwill, customer relationships and other intangible assets were $16.921 billion.

        We amortize customer relationships over estimated lives of 10 years, using either the sum-of-the-years-digits or straight-line methods, depending on the type of customer. We amortize capitalized software using the straight-line method over estimated lives ranging up to seven years.

        Total amortization expense for intangible assets for the successor three months ended March 31, 2012 and the predecessor three months ended March 31, 2011 was $274 million and $58 million, respectively.