(Dollars in millions) | Additives & Functional Products | Adhesives & Plasticizers | Advanced Materials | Specialty Fluids & Intermediates | Other Segments | Total | |||||||||||||||||
Reported balance at December 31, 2011 | $ | 211 | $ | 134 | $ | 1 | $ | 56 | $ | 4 | $ | 406 | |||||||||||
Additions | 740 | — | 1,027 | 463 | — | 2,230 | |||||||||||||||||
Impairments | — | — | — | — | (1 | ) | (1 | ) | |||||||||||||||
Currency translation adjustments | (6 | ) | (1 | ) | 16 | — | — | 9 | |||||||||||||||
Reported balance at December 31, 2012 | 945 | 133 | 1,044 | 519 | 3 | 2,644 | |||||||||||||||||
Adjustments resulting from subsequent recognition of deferred tax assets | 5 | — | (23 | ) | (4 | ) | — | (22 | ) | ||||||||||||||
Currency translation adjustments | (2 | ) | (1 | ) | 19 | (1 | ) | — | 15 | ||||||||||||||
Reported balance at December 31, 2013 | $ | 948 | $ | 132 | $ | 1,040 | $ | 514 | $ | 3 | $ | 2,637 |
December 31, 2013 | December 31, 2012 | |||||||||||||||||||||||
(Dollars in millions) | Estimated Useful Life in Years | Gross Carrying Value | Accumulated Amortization | Net Carrying Value | Gross Carrying Value | Accumulated Amortization | Net Carrying Value | |||||||||||||||||
Amortizable intangible assets: | ||||||||||||||||||||||||
Customer relationships | 15-25 | $ | 863 | $ | 71 | $ | 792 | $ | 869 | $ | 29 | $ | 840 | |||||||||||
Technology | 7-17 | 455 | 58 | 397 | 454 | 21 | 433 | |||||||||||||||||
Other | 5-20 | 4 | — | 4 | 4 | — | 4 | |||||||||||||||||
Indefinite-lived intangible assets: | ||||||||||||||||||||||||
Trade names | 568 | — | 568 | 572 | — | 572 | ||||||||||||||||||
Total identified intangible assets | $ | 1,890 | $ | 129 | $ | 1,761 | $ | 1,899 | $ | 50 | $ | 1,849 |