EQUITY - SHARE REPURCHASE PROGRAM (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | 12 Months Ended | 29 Months Ended | ||
|---|---|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2017 |
Sep. 30, 2016 |
Dec. 31, 2016 |
Sep. 30, 2017 |
May 31, 2015 |
|
| Equity, Class of Treasury Stock [Line Items] | ||||||
| Repurchase of common shares for the period | $ 200 | |||||
| Common Shares | ||||||
| Equity, Class of Treasury Stock [Line Items] | ||||||
| Authorized amount of issued and outstanding common shares available for repurchase | $ 500 | |||||
| Repurchase of common shares (in shares) | 0 | 0 | 3,296,230 | 4,707,440 | ||
| Repurchase of common shares for the period | $ 0 | $ 0 | $ 200 | $ 300 | ||