RECENT INVESTMENT ACTIVITY 2 (Details) - Jun. 30, 2015 - USD ($) $ in Millions |
Total |
|---|---|
| California Solar Partnership [Member] | |
| Business Acquisition [Line Items] | |
| Equity Method Investment Ownership Percentage | 50.00% |
| Equity Investment In Solar Projects | $ 109 |
| Additional Equity investment in solar projects | 12 |
| Black Oak Getty Wind [Member] | |
| Business Acquisition [Line Items] | |
| Total business acquisition costs | $ 8 |
| Ownership Percentage in consolidated entity | 100.00% |