The following table summarizes the major components of debt at principal amounts as of each balance sheet date (in millions) and provides the maturities and interest rate ranges of each major category as of March 31, 2023:

(a)	Excluding our landfill financing leases, the maturities of our financing leases and other debt obligations extend through 2059.

Debt Classification

As of March 31, 2023, we had approximately $2.3 billion of debt maturing within the next 12 months, including (i) $861 million of short-term borrowings under our commercial paper program (net of related discount on issuance); (ii) $725 million of tax-exempt bonds with term interest rate periods that expire within the next 12 months, which is prior to their scheduled maturities; (iii) $500 million of 2.4% senior notes that mature in May 2023 and (iv) $186 million of other debt with scheduled maturities within the next 12 months, including $65 million of tax-exempt bonds. As of March 31, 2023, we have classified $1.9 billion of debt maturing in the next 12 months as long-term because we have the intent and ability to refinance these borrowings on a long-term basis as supported by the forecasted available capacity under our $3.5 billion long-term U.S. and Canadian revolving credit facility (“$3.5 billion revolving credit facility”), as discussed below. The remaining $336 million of debt maturing in the next 12 months is classified as current obligations.

Access to and Utilization of Credit Facilities, Commercial Paper Program and Term Loan

$3.5 Billion Revolving Credit Facility — Our $3.5 billion revolving credit facility, maturing May 2027, provides us with credit capacity to be used for cash borrowings, to support letters of credit and to support our commercial paper program. The interest rates we pay on outstanding U.S. or Canadian loans are based on the Secured Overnight Financing Rate (“SOFR”) administered by the Federal Reserve Bank of New York or the Canadian Dollar Offered Rate (“CDOR”), respectively, plus a spread depending on WMI’s senior public debt rating assigned by Moody’s Investors Service, Inc. and Standard and Poor’s Global Ratings. As of March 31, 2023, we had no outstanding borrowings under this facility. We had $165 million of letters of credit issued and $861 million of outstanding borrowings (net of related discount on issuance) under our commercial paper program, both supported by the facility, leaving unused and available credit capacity of

$2.5 billion as of March 31, 2023. WM Holdings, a wholly-owned subsidiary of WMI, guarantees all of the obligations under the $3.5 billion revolving credit facility.

Commercial Paper Program — We have a commercial paper program that enables us to borrow funds for up to 397 days at competitive interest rates. The rates we pay for outstanding borrowings are based on the term of the notes. The commercial paper program is fully supported by our $3.5 billion revolving credit facility. As of March 31, 2023, we had $861 million of outstanding borrowings (net of related discount on issuance) under our commercial paper program.

$1.0 Billion, Two-Year, Term Credit Agreement — In May 2022, we entered into a $1.0 billion, two-year, U.S. term credit agreement (“Term Loan”) maturing May 2024 to be used for general corporate purposes. The interest rate we pay on our outstanding balance is generally based on SOFR, plus a spread depending on WMI’s senior public debt rating assigned by Moody’s Investors Service, Inc. and Standard and Poor’s Global Ratings. As of March 31, 2023, we had $1.0 billion of outstanding borrowings under our Term Loan. WM Holdings also guarantees all of the obligations under the Term Loan.

Other Letter of Credit Lines — As of March 31, 2023, we had utilized $796 million of other uncommitted letter of credit lines, with terms maturing through December 2026.

Debt Borrowings and Repayments

Commercial Paper Program — During the three months ended March 31, 2023, we made cash repayments of $6.5 billion, which were partially offset by $5.6 billion of cash borrowings (net of related discount on issuance).

Senior Notes — In February 2023, WMI issued $750 million and $500 million of 4.625% senior notes due February 2030 and February 2033, respectively, the net proceeds of which were $1.24 billion. We used the net proceeds to repay $867 million of outstanding borrowings under our commercial paper program and utilized the remaining $373 million, combined with our net cash provided by operating activities of $1.04 billion, for general corporate purposes including for example, payment of dividends, common stock repurchases and investments in the business through capital expenditures and acquisitions.

Financing Leases and Other — The increase in our financing leases and other debt obligations during the three months ended March 31, 2023 is due to an increase of $33 million primarily related to non-cash financing leases, partially offset by $28 million of cash repayments of debt at maturity.