v3.8.0.1

Other operating income and expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other operating income [Abstract]
Grants	$ 59,707	$ 59,085	$ 67,859
Income from various services and insurance proceeds	21,137	6,453	998
Total	80,844	65,538	68,857
Other operating expenses [Abstract]
Leases and fees	(6,641)	(5,309)	(3,865)
Operation and maintenance	(129,873)	(133,292)	(116,405)
Independent professional services	(36,178)	(30,515)	(19,046)
Supplies	(20,350)	(17,177)	(18,001)
Insurance	(24,289)	(23,390)	(20,277)
Levies and duties	(52,409)	(44,440)	(32,352)
Other expenses	(14,721)	(6,195)	(14,882)
Total	$ (284,461)	$ (260,318)	$ (224,828)

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The amount of revenue arising from the rendering of services and the income arising from insurance contracts.

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The amount of expense arising from purchased insurance.

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The amount of payments on leases and subleases recognised as an expense by the lessee.

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The amount of miscellaneous other operating expenses. [Refer: Other operating income (expense)]

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The amount of expenses that the entity does not separately disclose in the same statement or note when the entity uses the 'nature of expense' form for its analysis of expenses. [Refer: Expenses, by nature]

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The amount of fees paid or payable for professional services.

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The amount of income recognised in relation to government grants. [Refer: Government grants]

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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