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VARIABLE INTEREST ENTITIES, CONTINGENT LIABILITIES AND CONSOLIDATED JOINT VENTURES - Consolidated Joint Ventures (Details) - Consolidated JV	12 Months Ended
	Dec. 31, 2017 item
Variable Interest Entities
Number of joint ventures with controlling interest	6
Consolidated VIE entities
Variable Interest Entities
Number of joint ventures with controlling interest	6
Minimum
Variable Interest Entities
Ownership interest in consolidated joint venture of the company (as a percent)	85.00%
Maximum
Variable Interest Entities
Ownership interest in consolidated joint venture of the company (as a percent)	95.00%

X

- Definition

Represents the number of joint ventures in which entity has controlling interest.

+ References

No definition available.

+ Details

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X

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

X

- 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.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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- Details

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- Details

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