XML 134 R114.htm IDEA: XBRL DOCUMENT v3.20.4

Segmented information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020 businessUnit segment
Segment Reporting [Abstract]
Number of business units | businessUnit	2
Number of reportable segments | segment	2

X

- Definition

Number of Business Units

+ References

No definition available.

+ Details

Name:	aqunf_NumberofBusinessUnits
Namespace Prefix:	aqunf_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration