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Debt - Senior Notes (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Jan. 31, 2023
Dec. 31, 2022
Dec. 31, 2020
Dec. 31, 2021
Debt Instrument [Line Items]        
Repayments of PAA senior notes   $ 750 $ 617  
PAA senior notes        
Debt Instrument [Line Items]        
Debt instrument face value   $ 8,400   $ 9,100
PAA senior notes | 3.65% senior notes due June 2022        
Debt Instrument [Line Items]        
Debt instrument, interest rate (as a percent)   3.65%    
Repayments of PAA senior notes   $ 750    
PAA senior notes | 5.00% senior notes due February 2021        
Debt Instrument [Line Items]        
Debt instrument, interest rate (as a percent)     5.00%  
Repayments of PAA senior notes     $ 600  
PAA senior notes | 3.80% senior notes due September 2030        
Debt Instrument [Line Items]        
Debt instrument, interest rate (as a percent)   3.80% 3.80%  
Offering price percentage     99.794%  
Debt instrument face value     $ 750  
PAA senior notes | 2.85% senior notes due January 2023        
Debt Instrument [Line Items]        
Debt instrument, interest rate (as a percent)       2.85%
PAA senior notes | 2.85% senior notes due January 2023 | Subsequent Event        
Debt Instrument [Line Items]        
Debt instrument, interest rate (as a percent) 2.85%      
Repayments of PAA senior notes $ 400      
Consolidated Finance Subsidiary Issuer        
Debt Instrument [Line Items]        
Consolidated subsidiary, ownership interest held by the parent   100.00%