XML 28 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Cover Page
12 Months Ended
Dec. 31, 2020
Entity Information [Line Items]  
Document Type 6-K
Document Period End Date Dec. 31, 2020
Current Fiscal Year End Date --12-31
Entity Registrant Name ALGONQUIN POWER & UTILITIES CORP.
Entity Central Index Key 0001174169
Amendment Flag false