v3.25.3

DEBT - Long-term Debt Outstanding (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Long-term debt principal	$ 3,350	$ 3,350
Unamortized debt discount	(1)	(1)
Unamortized debt issuance costs	(27)	(30)
Long-Term Debt, net	$ 3,322	3,319
Senior Notes \| 2029 Notes
Debt Instrument [Line Items]
Interest Rate	4.125%
Long-term debt principal	$ 1,100	1,100
Senior Notes \| 2031 Notes
Debt Instrument [Line Items]
Interest Rate	4.375%
Long-term debt principal	$ 1,000	1,000
Senior Notes \| 2032 Notes
Debt Instrument [Line Items]
Interest Rate	4.30%
Long-term debt principal	$ 600	600
Senior Notes \| 2034 Notes
Debt Instrument [Line Items]
Interest Rate	5.80%
Long-term debt principal	$ 650	$ 650

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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DT Midstream, Inc. 10-Q