8. GOODWILL AND OTHER INTANGIBLE ASSETS
The carrying amount of goodwill for our reportable segments has been retrospectively adjusted to conform to the 2013 segment change discussed in Note 2, as well as refinements in our estimates regarding the allocation of purchase price associated with our Metropolitan acquisition discussed in Note 3. Changes in the carrying amount of goodwill for our reportable segments for the years ended December 31, 2013 and 2012 were as follows:
| Retail | Employer Group |
Health & Well -Being Services |
Other Businesses |
Total | ||||||||||||||||
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Balance at December 31, 2011 |
$ | 762 | $ | 196 | $ | 1,733 | $ | 49 | $ | 2,740 | ||||||||||
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Acquisitions |
172 | 0 | 679 | 43 | 894 | |||||||||||||||
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Subsequent payments/adjustments |
(3 | ) | 9 | 0 | 0 | 6 | ||||||||||||||
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Balance at December 31, 2012 |
$ | 931 | $ | 205 | $ | 2,412 | $ | 92 | $ | 3,640 | ||||||||||
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Acquisitions |
76 | 0 | 40 | 0 | 116 | |||||||||||||||
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Dispositions |
0 | 0 | (17 | ) | 0 | (17 | ) | |||||||||||||
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Subsequent payments/adjustments |
0 | 0 | (6 | ) | 0 | (6 | ) | |||||||||||||
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Balance at December 31, 2013 |
$ | 1,007 | $ | 205 | $ | 2,429 | $ | 92 | $ | 3,733 | ||||||||||
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The following table presents details of our other intangible assets included in other long-term assets in the accompanying consolidated balance sheets at December 31, 2013 and 2012:
| Weighted Average Life |
2013 | 2012 | ||||||||||||||||||||||||||
| Cost | Accumulated Amortization |
Net | Cost | Accumulated Amortization |
Net | |||||||||||||||||||||||
| (in millions) | ||||||||||||||||||||||||||||
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Other intangible assets: |
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Customer contracts/relationships |
9.6 yrs | $ | 792 | $ | 310 | $ | 482 | $ | 733 | $ | 237 | $ | 496 | |||||||||||||||
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Trade names and technology |
13.1 yrs | 200 | 40 | 160 | 190 | 21 | 169 | |||||||||||||||||||||
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Provider contracts |
15.0 yrs | 51 | 23 | 28 | 51 | 19 | 32 | |||||||||||||||||||||
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Noncompetes and other |
6.5 yrs | 52 | 29 | 23 | 51 | 17 | 34 | |||||||||||||||||||||
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Total other intangible assets |
10.3 yrs | $ | 1,095 | $ | 402 | $ | 693 | $ | 1,025 | $ | 294 | $ | 731 | |||||||||||||||
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Amortization expense for other intangible assets was approximately $117 million in 2013, $75 million in 2012, and $54 million in 2011. The following table presents our estimate of amortization expense for each of the five next succeeding fiscal years:
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For the years ending December 31,: |
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2014 |
$ | 114 | ||
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2015 |
103 | |||
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2016 |
95 | |||
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2017 |
85 | |||
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2018 |
78 | |||