v3.8.0.1
Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of changes In goodwill by operating segment
The following table summarizes the changes in goodwill by operating segment ($ in millions):  
 
 Managed Care 
 
Specialty Services
 
Total 
Balance as of December 31, 2015
$
361

 
$
481

 
$
842

Acquisitions and purchase accounting adjustments
3,657

 
216

 
3,873

Translation impact
(3
)
 
—

 
(3
)
Balance as of December 31, 2016
4,015

 
697

 
4,712

Acquisitions and purchase accounting adjustments
—

 
37

 
37

Balance as of December 31, 2017
$
4,015

 
$
734

 
$
4,749
Schedule of intangible assets
Intangible assets at December 31, consist of the following ($ in millions):  
 
 
 
 
 
Weighted Average Life in Years
 
2017
 
2016
 
2017
 
2016
Purchased contract rights
$
1,173

 
$
1,171

 
12.6
 
12.6

Provider contracts
274

 
285

 
11.9
 
10.7

Customer relationships
22

 
22

 
8.2
 
8.2

Trade names
162

 
163

 
9.6
 
9.6

Developed technologies
109

 
110

 
5.0
 
5.0

Other Intangibles
7

 
—

 
2.8
 
—

Intangible assets
1,747

 
1,751

 
11.6
 
11.5

Less accumulated amortization:
 
 
 
 
 
 
 
Purchased contract rights
(188
)
 
(95
)
 
 
 
 
Provider contracts
(66
)
 
(55
)
 
 
 
 
Customer relationships
(21
)
 
(21
)
 
 
 
 
Trade names
(34
)
 
(17
)
 
 
 
 
Developed technologies
(40
)
 
(18
)
 
 
 
 
Total accumulated amortization
(349
)
 
(206
)
 
 
 
 
Intangible assets, net
$
1,398

 
$
1,545

 
 
 
 
Schedule of future amortization expenses
Estimated total amortization expense related to intangible assets for each of the five succeeding fiscal years is as follows ($ in millions):
Year
 
Expense
2018
 
$
156

2019
 
156

2020
 
154

2021
 
134

2022
 
128