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CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables) | 12 Months Ended
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Dec. 31, 2015
Cash, Cash Equivalents, and Short-term Investments [Abstract] |
Schedule of Cash, Cash Equivalents and Short-term Investments [Table Text Block] | Components for cash, cash equivalents and marketable securities (in millions):
December 31, 2015 | Cost Basis |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value
Cash | $ | 4 |  |  | $ | — |  |  | $ | — |  |  | $ | 4 |
Cash equivalents | 69 |  |  | — |  |  | — |  |  | 69 |
Cash and cash equivalents | 73 |  |  | — |  |  | — |  |  | 73 |
U.S. government and agency securities | 254 |  |  | — |  |  | (1 | ) |  | 253 |
Foreign government bonds | 31 |  |  | — |  |  | — |  |  | 31 |
Asset-backed securities | 130 |  |  | — |  |  | — |  |  | 130 |
Mortgage-backed securities | 117 |  |  | — |  |  | (1 | ) |  | 116 |
Corporate notes and bonds | 711 |  |  | 1 |  |  | (4 | ) |  | 708 |
Municipal securities | 17 |  |  | — |  |  | — |  |  | 17 |
Marketable securities | 1,260 |  |  | 1 |  |  | (6 | ) |  | 1,255 |
Total | $ | 1,333 |  |  | $ | 1 |  |  | $ | (6 | ) |  | $ | 1,328 |
December 31, 2014 | Cost Basis |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value
Cash | $ | 4 |  |  | $ | — |  |  | $ | — |  |  | $ | 4 |
Cash equivalents | 103 |  |  | — |  |  | — |  |  | 103 |
Cash and cash equivalents | 107 |  |  | — |  |  | — |  |  | 107 |
U.S. government and agency securities | 166 |  |  | — |  |  | — |  |  | 166 |
Foreign government bonds | 25 |  |  | — |  |  | — |  |  | 25 |
Asset-backed securities | 130 |  |  | — |  |  | — |  |  | 130 |
Mortgage-backed securities | 127 |  |  | — |  |  | (1 | ) |  | 126 |
Corporate notes and bonds | 644 |  |  | 3 |  |  | (2 | ) |  | 645 |
Municipal securities | 18 |  |  | — |  |  | — |  |  | 18 |
Marketable securities | 1,110 |  |  | 3 |  |  | (3 | ) |  | 1,110 |
Total | $ | 1,217 |  |  | $ | 3 |  |  | $ | (3 | ) |  | $ | 1,217 |
Schedule of Realized Gain (Loss) [Table Text Block] | Activity for marketable securities (in millions):
| 2015 |  | 2014 |  | 2013
Proceeds from sales and maturities | $ | 1,175 |  |  | $ | 1,092 |  |  | $ | 1,089 |
Gross realized gains | 2 |  |  | 4 |  |  | 4 |
Gross realized losses | (3 | ) |  | (2 | ) |  | (2 | )
Schedule of Debt Investment Maturities [Table Text Block] | Maturities for marketable securities (in millions):
December 31, 2015 | Cost Basis |  | Fair Value
Due in one year or less | $ | 182 |  |  | $ | 182 |
Due after one year through five years | 1,055 |  |  | 1,050 |
Due after five years through 10 years | 14 |  |  | 14 |
Due after 10 years | 9 |  |  | 9 |
Total | $ | 1,260 |  |  | $ | 1,255 |

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- Definition Tabular disclosure of the components of cash, cash equivalents, and investments. + References No definition available. + Details
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