FAIR VALUE - Changes in Fair Value of Assets Measured Using Significant Unobservable Inputs (Detail) - USD ($)
$ in Millions |
3 Months Ended |
9 Months Ended |
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Beginning Balance |
$ 9
|
$ 11
|
$ 11
|
$ 32
|
| Realized in earnings |
0
|
0
|
0
|
(1)
|
| Unrealized in other comprehensive income |
0
|
0
|
0
|
0
|
| Purchases |
0
|
0
|
0
|
0
|
| Sales |
0
|
0
|
0
|
(20)
|
| Settlements |
0
|
0
|
(2)
|
0
|
| Ending Balance |
9
|
11
|
9
|
11
|
| Private Placements |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Beginning Balance |
6
|
6
|
6
|
24
|
| Realized in earnings |
0
|
0
|
0
|
(1)
|
| Unrealized in other comprehensive income |
0
|
0
|
0
|
0
|
| Purchases |
0
|
0
|
0
|
0
|
| Sales |
0
|
0
|
0
|
(17)
|
| Settlements |
0
|
0
|
0
|
0
|
| Ending Balance |
6
|
6
|
6
|
6
|
| Auction Rate Securities |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Beginning Balance |
3
|
5
|
5
|
8
|
| Realized in earnings |
0
|
0
|
0
|
0
|
| Unrealized in other comprehensive income |
0
|
0
|
0
|
0
|
| Purchases |
0
|
0
|
0
|
0
|
| Sales |
0
|
0
|
0
|
(3)
|
| Settlements |
0
|
0
|
(2)
|
0
|
| Ending Balance |
$ 3
|
$ 5
|
$ 3
|
$ 5
|