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Acquisitions, Divestitures and Other Transactions (Tables)
 12 Months Ended
Dec. 31, 2023
OMOG JV LLC and Southern Delaware Gathering Assets  
Business Acquisition [Line Items]  
Schedule of Assets Acquired and Liabilities Assumed The following table reflects our determination of the fair value of the assets acquired and liabilities assumed in connection with the transaction (in millions):
Identifiable Assets Acquired and Liabilities Assumed:Estimated Useful Lives
(in years)		Recognized Amount
Property and equipment
3-30
$484 
Intangible assets1034 
Working capital and other assets and liabilitiesN/A14 
$532 
OMOG JV LLC and Southern Delaware Gathering Assets | Customer relationships  
Business Acquisition [Line Items]  
Schedule of Amortization Expense Amortization expense was approximately $4 million during the year ended December 31, 2023, and the future amortization expense through 2028 is estimated as follows (in millions):
2024$8 
2025$10 
2026$4 
2027$3 
2028$2 
Cactus II Pipeline LLC  
Business Acquisition [Line Items]  
Schedule of Assets Acquired and Liabilities Assumed The following table reflects our determination of the fair value of those assets and liabilities (in millions):
Identifiable Assets Acquired and Liabilities Assumed:Estimated Useful Lives
(in years)		Recognized Amount
Property and equipment
3-50
$1,174 
Intangible assets20428 
Working capital and other assets and liabilitiesN/A(46)
$1,556 
Cactus II Pipeline LLC | Customer relationships  
Business Acquisition [Line Items]  
Schedule of Amortization Expense Amortization expense was approximately $61 million and $13 million during the years ended December 31, 2023 and 2022, respectively, and the future amortization expense through 2027 is estimated as follows (in millions):
2024$51 
2025$47 
2026$32 
2027$32 
Plains Oryx Permian Basin LLC | Modified Sharing Arrangement  
Business Acquisition [Line Items]  
Schedule of Modified Revenue Sharing Arrangement
Under the MSA, distributions will be allocated as follows (in millions):

Available CashDistributions Percentages
TierAnnualized PAAOryx
1Up to $30050%50%
2$300 - $428100%—%
3$428 - $81565%35%
4$815 and above70%30%
Plains Oryx Permian Basin LLC | Oryx Midstream Holdings LLC | Joint Venture Transaction  
Business Acquisition [Line Items]  
Schedule of Assets Acquired and Liabilities Assumed The following table reflects our determination of the fair value of those assets and liabilities (in millions):
Identifiable Assets Acquired and Liabilities AssumedEstimated Useful Lives
(in years)		Recognized Amount
Property and equipment
3-30
$1,886 
Intangible assets201,247 
Investment in unconsolidated entitiesN/A103 
Working capital and other assets and liabilitiesN/A(6)
$3,230 
Schedule of Partners' Capital
The following table presents the amounts recognized in partners’ capital associated with this transaction (in millions):

Recognized Amount
Noncontrolling interests$2,635 
Partners’ capital, excluding noncontrolling interests595 
$3,230 
Schedule of Pro Forma Information These results are not necessarily indicative of the results that might have actually occurred had the merger taken place on January 1, 2021; furthermore, this financial information is not intended to be a projection of future results (in millions, except per unit amounts):
Year Ended
December 31, 2021
Total revenues$42,359 
Net income attributable to PAA
$524 
Net income allocated to common unitholders
$324 
Basic and diluted net income per common unit
$0.45 
Plains Oryx Permian Basin LLC | Customer relationships | Joint Venture Transaction  
Business Acquisition [Line Items]  
Schedule of Amortization Expense Amortization expense was approximately $138 million, $142 million and $28 million during the years ended December 31, 2023, 2022 and 2021, respectively, and the future amortization expense through 2026 is estimated as follows (in millions):
2024$127 
2025$117 
2026$106