v3.10.0.1

Derivative financial instruments (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Breakdown of fair value amount of derivative financial instruments [Abstract]
Loss on cash flow hedges	$ 33,899	$ 34,265
Interest Rate Derivatives [Member] | Cash Flow Hedge [Member]
Breakdown of fair value amount of derivative financial instruments [Abstract]
Assets	13,050		$ 8,230
Liabilities	285,985		329,731
Loss on cash flow hedges	(33,899)	$ (34,265)
After-tax result accumulated in equity	$ 91,935		$ 80,968

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- References

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The gains (losses) recognised in other comprehensive income on cash flow hedges, before tax. [Refer: Cash flow hedges [member]]

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The amount of a hedging instrument, recognised as an asset. [Refer: Hedging instruments [member]]

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The amount of a hedging instrument, recognised as a liability. [Refer: Hedging instruments [member]]

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A component of equity representing the reserve of cash flow hedges in relation to continuing hedges. [Refer: Reserve of cash flow hedges]

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