v3.25.1
Debt - Components (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
SHORT-TERM DEBT    
Short-term debt $ 478 $ 408
LONG-TERM DEBT    
PAA senior notes 8,131 7,141
Other 73 72
Total long-term debt 8,204 7,213
Total debt 8,682 7,621
Senior notes    
LONG-TERM DEBT    
PAA senior notes 8,131 7,141
Unamortized discounts and debt issuance costs 52 42
Debt instrument face value 8,200 7,200
Senior notes | Level 2    
LONG-TERM DEBT    
Debt instrument fair value 7,800 6,700
Other    
LONG-TERM DEBT    
Other 73 72
Other    
SHORT-TERM DEBT    
Short-term debt 14 15
Commercial Paper    
SHORT-TERM DEBT    
Short-term notes and borrowings $ 464 $ 393
Commercial Paper | Line of credit    
SHORT-TERM DEBT    
Weighted average interest rate, short-term (as a percent) 4.60% 4.60%
4.65% Senior notes due In october 2025 | Senior notes    
LONG-TERM DEBT    
Long-term debt $ 1,000 $ 1,000
Debt instrument, interest rate (as a percent) 4.65% 4.65%