GOODWILL AND OTHER INTANGIBLE ASSETS - Details of Intangible Assets Included in Other Long-Term Assets (Detail) - USD ($)
$ in Millions |
9 Months Ended |
|
Sep. 30, 2016 |
Dec. 31, 2015 |
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Weighted Average Life |
9 years 9 months 18 days
|
|
| Cost |
$ 753
|
$ 753
|
| Accumulated Amortization |
455
|
396
|
| Net |
$ 298
|
357
|
| Customer contracts/ relationships |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Weighted Average Life |
9 years 9 months 18 days
|
|
| Cost |
$ 566
|
566
|
| Accumulated Amortization |
333
|
292
|
| Net |
$ 233
|
274
|
| Trade names and technology |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Weighted Average Life |
8 years 3 months 18 days
|
|
| Cost |
$ 104
|
104
|
| Accumulated Amortization |
66
|
54
|
| Net |
$ 38
|
50
|
| Provider contracts |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Weighted Average Life |
14 years 6 months
|
|
| Cost |
$ 51
|
51
|
| Accumulated Amortization |
28
|
24
|
| Net |
$ 23
|
27
|
| Noncompetes and other |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Weighted Average Life |
8 years 2 months 12 days
|
|
| Cost |
$ 32
|
32
|
| Accumulated Amortization |
28
|
26
|
| Net |
$ 4
|
$ 6
|