REDEEMABLE INTERESTS AND NONCONTROLLING INTERESTS - Other Consolidated Subsidiaries and Variable Interest Entities (Details) $ in Thousands	3 Months Ended
Dec. 31, 2017 USD ($) subsidiary	Dec. 31, 2018 USD ($) subsidiary
Redeemable Noncontrolling Interest [Line Items]
Number of other consolidated subsidiaries (subsidiary) \| subsidiary	22	19
Other Consolidated Subsidiaries
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interest, net gain (loss) on disposal of interest	$ (2,602)
Other noncontrolling interests	9,701	$ 12,111
Notes Receivable \| Other Consolidated Subsidiaries
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interest, redemption value	3,800
Redeemable noncontrolling interest, redemption value, cash amount	300
Redeemable noncontrolling interest, redemption value, note receivable amount	$ 3,500
Contain Redemption Provisions
Redeemable Noncontrolling Interest [Line Items]
Number of other consolidated subsidiaries (subsidiary) \| subsidiary	4

Increase (Decrease) in Notes Receivable, Sale of Land

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- Definition

Number of Other Consolidated Subsidiaries

+ References

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- Definition

Redeemable Noncontrolling Interest, Equity, Redemption Value, Cash

+ References

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- Definition

Redeemable Noncontrolling Interest, Net Gain (Loss) on Disposal

+ References

No definition available.

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- Definition

Carrying amount of equity interests owned by noncontrolling shareholders, partners, or other equity holders in one or more of the entities consolidated into the reporting entity's financial statements other than joint ventures, limited partnerships, operating partnerships or interests held by preferred unit holders.

+ References

No definition available.

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- Definition

Redemption value, as if currently redeemable, of redeemable noncontrolling interest classified as temporary equity and the election has been made to accrete changes in redemption value to the earliest redemption date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 3A
-Subparagraph 24(b)
-URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764

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- Definition

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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