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Financial instruments - Additional Information (Detail)
 12 Months Ended
Aug. 01, 2022
USD ($)
Apr. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
MWh
derivative_contract
$ / shares
$ / MWh
Dec. 31, 2022
CAD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2021
CAD ($)
Dec. 31, 2022
CAD ($)
MWh
derivative_contract
$ / MWh
Dec. 17, 2022
USD ($)
MWh
$ / MWh
Feb. 15, 2022
CAD ($)
Jan. 31, 2022
CAD ($)
Apr. 09, 2021
CAD ($)
Feb. 15, 2021
CAD ($)
May 23, 2019
USD ($)
Derivative [Line Items]                          
Number of interest rate swap contracts | derivative_contract     2       2            
Foreign currency gain (loss)     $ (23,502,000)   $ (30,270,000)                
Revenue collection period     45 days 45 days                  
Accounts receivable     $ 552,914,000                    
Cash on hand     57,623,000                    
Liquidity available under the facilities     2,515,600,000   2,050,200,000                
Regulated Services Group                          
Derivative [Line Items]                          
Accounts receivable     404,258,000                    
Unsecured Debt                          
Derivative [Line Items]                          
Debt repaid upon maturity $ 115,000 $ 80,000,000                      
Non-regulated Energy Sales                          
Derivative [Line Items]                          
Unrealized gains (loss) in AOCI to be reclassified     (32,467,000)                    
Revolving and Term Credit Facilities                          
Derivative [Line Items]                          
Liquidity available under the facilities     2,288,765,000                    
U.S. dollar Subordinated unsecured notes | Unsecured Debt                          
Derivative [Line Items]                          
Par value         500,000,000   $ 300,000,000           $ 350,000,000
Canadian dollar Senior unsecured notes | Unsecured Debt                          
Derivative [Line Items]                          
Par value             $ 1,200,000,000   $ 200,000     $ 150,000  
Canadian Investments and Subsidiaries                          
Derivative [Line Items]                          
Foreign currency gain (loss)     2,262,000   168,000                
Interest rate swaps designated as a hedge | U.S. dollar Subordinated unsecured notes                          
Derivative [Line Items]                          
Derivative notional amount     350,000,000                    
Currency Swap                          
Derivative [Line Items]                          
Cross-currency interest rate swap                   $ 400,000,000      
Foreign currency gain (loss)     (11,082,000)   7,824,000                
Currency Swap | Canadian dollar Senior unsecured notes | Unsecured Debt                          
Derivative [Line Items]                          
Foreign currency gain (loss)     (13,374,000)   (1,925,000)                
Par value                     $ 400,000,000    
Foreign exchange contract                          
Derivative [Line Items]                          
Foreign currency gain (loss)     $ 22,091,000   4,232,000                
Currency forward contract                          
Derivative [Line Items]                          
Foreign currency gain on settlement of derivative         $ 2,329,000                
Interest Rate Cap                          
Derivative [Line Items]                          
Notional quantity (MW-hrs) | MWh               516,202          
Receive average prices (per MW-hr) | $ / MWh               25.15          
Derivative notional amount               $ 390,000,000          
Transmission congestion rights                          
Derivative [Line Items]                          
Notional quantity (MW-hrs) | MWh     1,328,510       1,328,510            
Cross currency interest rate contract                          
Derivative [Line Items]                          
Debt repaid upon maturity       $ 200,000,000   $ 150,000,000              
Minimum | Atlantica Yield Energy Solutions Canada Inc. | Measurement Input, Discount Rate                          
Derivative [Line Items]                          
Alternative investment, measurement input (percent)     0.0800       0.0800            
Minimum | Atlantica Yield Energy Solutions Canada, Inc | Measurement Input, Price Volatility                          
Derivative [Line Items]                          
Alternative investment, measurement input (percent)     0.2699       0.2699            
Minimum | Energy contracts                          
Derivative [Line Items]                          
Forward price | $ / MWh     23.32       23.32            
Minimum | Transmission congestion rights                          
Derivative [Line Items]                          
Receive average prices (per MW-hr) | $ / MWh     1.58       1.58            
Maximum | Atlantica Yield Energy Solutions Canada Inc. | Measurement Input, Discount Rate                          
Derivative [Line Items]                          
Alternative investment, measurement input (percent)     0.0850       0.0850            
Maximum | Atlantica Yield Energy Solutions Canada, Inc | Measurement Input, Price Volatility                          
Derivative [Line Items]                          
Alternative investment, measurement input (percent)     0.3489       0.3489            
Maximum | Energy contracts                          
Derivative [Line Items]                          
Forward price | $ / MWh     109.91       109.91            
Derivative auction price | $ / shares     $ 23.20                    
Maximum | Transmission congestion rights                          
Derivative [Line Items]                          
Receive average prices (per MW-hr) | $ / MWh     19.06       19.06            
Weighted Average | Atlantica Yield Energy Solutions Canada Inc. | Measurement Input, Discount Rate                          
Derivative [Line Items]                          
Alternative investment, measurement input (percent)     0.0834       0.0834            
Weighted Average | Energy contracts                          
Derivative [Line Items]                          
Forward price | $ / MWh     44.76       44.76            
Derivative auction price | $ / shares     $ 7.83                    
Weighted Average | Transmission congestion rights                          
Derivative [Line Items]                          
Receive average prices (per MW-hr) | $ / MWh     7.80       7.80