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Debt - Commercial Paper and Credit Facilities (Details)
$ in Millions
1 Months Ended 12 Months Ended
Aug. 31, 2021
USD ($)
Dec. 31, 2022
USD ($)
extension
Dec. 31, 2021
USD ($)
Debt Instrument [Line Items]      
Repayments of debt     $ 200
PAA GO Zone term loan | Term loan      
Debt Instrument [Line Items]      
Repayments of debt $ 200    
PAA commercial paper notes      
Debt Instrument [Line Items]      
Maximum aggregate borrowing capacity   $ 2,700  
PAA senior secured hedged inventory facility      
Debt Instrument [Line Items]      
Maximum aggregate borrowing capacity   1,900  
Committed borrowing capacity   $ 1,350  
Number of years by which maturity date of credit facility may be extended   1 year  
PAA senior secured hedged inventory facility | Minimum      
Debt Instrument [Line Items]      
Credit facility extensions available | extension   1  
PAA senior secured hedged inventory facility | Letters of credit      
Debt Instrument [Line Items]      
Committed borrowing capacity   $ 400  
PAA senior unsecured revolving credit facility      
Debt Instrument [Line Items]      
Maximum aggregate borrowing capacity   2,100  
Committed borrowing capacity   $ 1,350  
Number of years by which maturity date of credit facility may be extended   1 year  
PAA senior unsecured revolving credit facility | Minimum      
Debt Instrument [Line Items]      
Credit facility extensions available | extension   1  
PAA senior unsecured revolving credit facility | Letters of credit      
Debt Instrument [Line Items]      
Committed borrowing capacity   $ 400