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Assets Classified As Held For Sale (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about property, plant and equipment [line items]
Impairment loss recognised in profit or loss, property, plant and equipment		$ 12.2		$ 0.0	$ 0.0	$ 12.2
Assets classified as held for sale			$ 30.1	30.1	$ 28.9
Solar panel manufacturing equipment
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment	$ 4.8
Impairment loss recognised in profit or loss, property, plant and equipment			3.8	3.8
Assets classified as held for sale			$ 2.6	$ 2.6

X

- Definition

The amount of current assets other than non-current assets or disposal groups classified as held for sale or as held for distribution to owners. [Refer: Current assets; Disposal groups classified as held for sale [member]; Non-current assets or disposal groups classified as held for sale; Non-current assets or disposal groups classified as held for distribution to owners]

+ References

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

- Definition

The decrease in property, plant and equipment through classification as held for sale or inclusion in a disposal group classified as held for sale. [Refer: Disposal groups classified as held for sale [member]; Property, plant and equipment; Disposal groups classified as held for sale [member]]

+ References

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

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

+ References

No definition available.

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- Definition

The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment]

+ References

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