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Debt
 12 Months Ended
Dec. 31, 2023
Debt Disclosure [Abstract]  
Debt Debt
Debt consisted of the following (in millions):

December 31,
2023		December 31,
2022
SHORT-TERM DEBT
Commercial paper notes, bearing a weighted-average interest rate of 5.8% (1)
$433 $— 
Senior notes:
2.85% senior notes due January 2023
— 400 
3.85% senior notes due October 2023
— 700 
Other13 59 
Total short-term debt446 1,159 
LONG-TERM DEBT
Senior notes:
3.60% senior notes due November 2024 (2)
750 750 
4.65% senior notes due October 2025
1,000 1,000 
4.50% senior notes due December 2026
750 750 
3.55% senior notes due December 2029
1,000 1,000 
3.80% senior notes due September 2030
750 750 
6.70% senior notes due May 2036
250 250 
6.65% senior notes due January 2037
600 600 
5.15% senior notes due June 2042
499 499 
4.30% senior notes due January 2043
348 348 
4.70% senior notes due June 2044
687 687 
4.90% senior notes due February 2045
649 649 
Unamortized discounts and debt issuance costs(41)(46)
Senior notes, net of unamortized discounts and debt issuance costs7,242 7,237 
Other long-term debt:
Other63 50 
Total long-term debt7,305 7,287 
Total debt (3)
$7,751 $8,446 
(1)We classified these commercial paper notes as short-term as of December 31, 2023, as these notes were primarily designated as working capital borrowings, were required to be repaid within one year and were primarily for hedged NGL and crude oil inventory and NYMEX and ICE margin deposits.
(2)As of December 31, 2023, we classified our 3.60%, $750 million senior notes due November 2024 as long-term based on our ability and intent to refinance these notes on a long-term basis.
(3)Our fixed-rate senior notes had a face value of approximately $7.3 billion and $8.4 billion at December 31, 2023 and 2022, respectively. We estimated the aggregate fair value of these notes to be approximately $6.9 billion and $7.6 billion at December 31, 2023 and 2022, respectively. Our fixed-rate senior notes are traded among institutions, and these trades are routinely published by a reporting service. Our determination of fair value is based on reported trading activity near the end of the reporting period. We estimate that the carrying value of outstanding borrowings under our commercial paper program approximates fair value as interest rates reflect current market rates. The fair value estimates for our senior notes and commercial paper program are based upon observable market data and are classified in Level 2 of the fair value hierarchy.
Commercial Paper Program

We have a commercial paper program under which we may issue (and have outstanding at any time) up to $2.7 billion in the aggregate of privately placed, unsecured commercial paper notes. Such notes are backstopped by our senior unsecured revolving credit facility and our senior secured hedged inventory facility; as such, any borrowings under our commercial paper program reduce the available capacity under these facilities.

Credit Agreements

Senior secured hedged inventory facility. We have a credit agreement that provides for a senior secured hedged inventory facility with a committed borrowing capacity of $1.35 billion. Subject to obtaining additional or increased lender commitments and other terms and conditions, the committed capacity of the facility may be increased to $1.9 billion. The credit agreement provides for the issuance of letters of credit of up to $400 million. Proceeds from the facility are primarily used to finance purchased or stored hedged inventory, including NYMEX and ICE margin deposits. Such obligations under the committed facility are secured by the financed inventory and the associated accounts receivable and are repaid from the proceeds of the sale of the financed inventory. Borrowings accrue interest based, at our election, on certain floating rate indices as defined in the credit agreement, in each case plus a margin based on our credit rating at the applicable time. The amended credit agreement also provides for one or more one-year extensions, subject to applicable approval and other terms and conditions. In August 2023, we extended the maturity date of the facility to August 2026 for each existing lender.

Senior unsecured revolving credit facility. We have a credit agreement that provides for a senior unsecured revolving credit facility with a committed borrowing capacity of $1.35 billion, of which $400 million is available for the issuance of letters of credit. Subject to obtaining additional or increased lender commitments and other terms and conditions, the committed capacity may be increased to $2.1 billion. Borrowings accrue interest based, at our election, on certain floating rate indices as defined in the credit agreement, in each case plus a margin based on our credit rating at the applicable time. The credit agreement provides for one or more one-year extensions, subject to applicable approval and other terms and conditions. In August 2023, we extended the maturity date of the facility to August 2028 for each extending lender. The maturity date with respect to the non-extending lender (which represents a commitment of approximately $64 million out of total commitments of $1.35 billion from all lenders) remains August 2027.

GO Zone term loans. In August 2021, in connection with the sale of the Southern Pines natural gas storage facility, we repaid $200 million of term loans (the “Go Zone term loans”) that were initially assumed in connection with our acquisition of that facility. See Note 7 for additional information.

Senior Notes

Our senior notes are co-issued, jointly and severally, by Plains All American Pipeline, L.P. and a 100%-owned consolidated finance subsidiary (neither of which have independent assets or operations) and are unsecured senior obligations of such entities and rank equally in right of payment with existing and future senior indebtedness of the issuers. We may, at our option, redeem any series of senior notes at any time in whole or from time to time in part, prior to maturity, at the redemption prices described in the indentures governing the senior notes. Our senior notes are not guaranteed by any of our subsidiaries.

Senior Notes Repayments. During the three years ended December 31, 2023, we repaid the following senior unsecured notes in full (in millions):

YearDescriptionRepayment Date
2023
$700 million 3.85% Senior Notes due October 2023
October 2023
(1)
2023
$400 million 2.85% Senior Notes due January 2023
January 2023
(1)
2022
$750 million 3.65% Senior Notes due June 2022
March 2022
(1)
(1)We repaid these senior notes with cash on hand and borrowings under our commercial paper program.
Maturities

The weighted average maturity of our senior notes outstanding at December 31, 2023 was approximately 10 years. The following table presents the aggregate contractually scheduled maturities of such senior notes for the next five years and thereafter. The amounts presented exclude unamortized discounts and debt issuance costs.

Calendar Year
Payment
(in millions)
2024$750 
2025$1,000 
2026$750 
2027$— 
2028$— 
Thereafter$4,783 

Covenants and Compliance

The credit agreements for our revolving credit facilities (which impact our ability to access our commercial paper program because they provide the financial backstop that supports our short-term credit ratings) and the indentures governing our senior notes contain cross-default provisions. Our credit agreements prohibit declaration or payments of distributions on, or purchases or redemptions of, units if any default or event of default is continuing. In addition, the agreements contain various covenants limiting our ability to, among other things:

•grant liens on certain property;
•incur indebtedness, including finance leases;
•sell substantially all of our assets or enter into a merger or consolidation;
•engage in certain transactions with affiliates; and
•enter into certain burdensome agreements.

The credit agreements for our senior unsecured revolving credit facility and senior secured hedged inventory facility treat a change of control as an event of default and also require us to maintain a debt-to-EBITDA coverage ratio that, on a trailing four-quarter basis, will not be greater than 5.00 to 1.00 (or 5.50 to 1.00 on all outstanding debt during an acquisition period (generally, the period consisting of three fiscal quarters following an acquisition greater than $150 million)). For covenant compliance purposes, Consolidated EBITDA may include certain adjustments, including those for material projects and certain non-recurring expenses. Additionally, letters of credit and borrowings to fund hedged inventory and margin requirements are excluded when calculating the debt coverage ratio.

A default under our credit agreements or indentures would permit the lenders to accelerate the maturity of the outstanding debt. As long as we are in compliance with the provisions contained in our credit agreements, our ability to make distributions of available cash is not restricted. As of December 31, 2023, we were in compliance with the covenants contained in our credit agreements and indentures.

Borrowings and Repayments

Total borrowings under our credit facilities and commercial paper program for the years ended December 31, 2023, 2022 and 2021 were approximately $18.1 billion, $25.0 billion and $32.5 billion, respectively. Total repayments under our credit facilities and commercial paper program were approximately $17.7 billion, $25.0 billion and $33.2 billion for the years ended December 31, 2023, 2022 and 2021, respectively. The variance in total gross borrowings and repayments is impacted by various business and financial factors including, but not limited to, the timing, average term and method of general partnership borrowing activities.
Letters of Credit

In connection with our merchant activities, we provide certain suppliers with irrevocable standby letters of credit to secure our obligation for the purchase and transportation of crude oil and NGL. Our liabilities with respect to these purchase obligations are recorded in accounts payable on our balance sheet in the month the crude oil or NGL is purchased. Generally, these letters of credit are issued for periods of up to seventy days and are terminated upon completion of each transaction. Additionally, we issue letters of credit to support insurance programs, derivative transactions, including hedging-related margin obligations, and construction activities. At December 31, 2023 and 2022, we had outstanding letters of credit of $205 million and $102 million, respectively.

Debt Issuance Costs

Costs incurred in connection with the issuance of senior notes are recorded as a direct deduction from the related debt liability and are amortized using the straight-line method over the term of the related debt. Use of the straight-line method does not differ materially from the “effective interest” method of amortization.