IPP SOLAR PARKS, INVESTMENT PROPERTY - Investment Property (Details) - Land - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, plant and equipment
Carrying amount	$ 11.3	$ 11.3	$ 9.5
Transfer to investment property	$ 0.0	$ 104.0	$ 0.0

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No definition available.

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- Definition

The increase (decrease) in property, plant and equipment resulting from transfers from (to) investment property. [Refer: Property, plant and equipment; Investment property]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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