v3.19.2

Subsequent events (Details) - Subsequent Events [Member] $ / shares in Units, $ in Millions	Aug. 02, 2019 USD ($) MW $ / shares	Jul. 30, 2019 USD ($)
Revolving credit facility [Abstract]
Additional increase	$ 125
Maximum borrowing capacity	$ 425
Dividends approved [Abstract]
Dividend approved (in dollars per share) | $ / shares	$ 0.40
Dividend approved expected date to be paid	Sep. 13, 2019
ASI Operations LLC [Member]
Acquistions [Abstract]
Purchase price		$ 6
ASI Operations LLC [Member] | Bottom of range [member]
Acquistions [Abstract]
Cost reduction		5
ASI Operations LLC [Member] | Top of range [member]
Acquistions [Abstract]
Cost reduction		$ 6
Monterrey [Member]
Acquistions [Abstract]
Ownership percentage acquired	30.00%
Power capacity | MW	142
Installed capacity | MW	130
Battery capacity | MW	12
Total equity investment	$ 42

X

- Definition

The purchase price the acquirer agrees to pay for the acquiree in a business combination.

+ References

No definition available.

+ Details

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X

- Definition

The rated electric battery power generation capacity in Megawatts (MW) or Kilovolts (kV) of a power generation facility.

+ References

No definition available.

+ Details

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- References

No definition available.

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- Definition

The rated electric power generation capacity in Megawatts (MW) or Kilovolts (kV) of a power generation facility.

+ References

No definition available.

+ Details

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- Definition

The aggregate decrease in the amount expensed for operation and maintenance services.

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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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- References

No definition available.

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X

- Definition

The amount of increase (decrease) to the maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the credit facility.

+ References

No definition available.

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- Definition

The rated electric power generation capacity in Megawatts (MW) or Kilovolts (kV) of a power generation facility that is generated by the facility through sustained output.

+ References

No definition available.

+ Details

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- Definition

The maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the credit facility.

+ References

No definition available.

+ Details

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X

- Definition

The percentage of interests acquired in a business combination.

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No definition available.

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- References

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X

- Definition

The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2019-01-01
-Paragraph B64
-Subparagraph f
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_f&doctype=Appendix&subtype=B
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- Definition

The amount, per share, of dividends proposed or declared before financial statements were authorised for issue but not recognised as distribution to owners.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 137
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_137_a&doctype=Standard
-URIDate 2019-03-27

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- Details

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