SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Redeemable Noncontrolling Interests (Details) |
9 Months Ended |
---|---|
Sep. 30, 2016 | |
Accounting Policies [Abstract] | |
Expiration period of redeemable noncontrolling interests, low end of range (in years) | 1 year |
Expiration period of redeemable noncontrolling interests, high end of range (in years) | 3 years |