FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Details) shares in Millions	Jun. 30, 2017 shares
Residential
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Available-for-sale securities, number of shares	4.1

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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