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Description of the Business and Basis of Presentation - Narrative (Details) |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 01, 2021 shares | Jun. 30, 2021 shares | May 31, 2023 USD ($) | Oct. 31, 2022 USD ($) | Jun. 30, 2021 shares | Jan. 31, 2021 shares | Dec. 31, 2023 USD ($) segment $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Jan. 13, 2021 $ / shares | Dec. 31, 2020 shares
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of segments | segment |  |  |  |  |  |  | 2 |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.01 | $ 0.01 | $ 0.01 |  | $ 0.01 |
Common stock, shares outstanding (in shares) | shares |  | 96,732,466 |  |  | 96,732,466 |  | 96,971,021 | 96,754,549 |  |  |  |
Common stock, shares issued (in shares) | shares |  | 96,732,466 |  |  | 96,732,466 |  | 96,971,021 | 96,754,549 |  |  |  |
Preferred stock, shares authorized (in shares) | shares |  |  |  |  |  |  | 50,000,000 | 50,000,000 |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.01 | $ 0.01 |  |  |  |
Preferred stock, shares outstanding (in shares) | shares |  |  |  |  |  |  | 0 | 0 |  |  |  |
Preferred stock, shares issued (in shares) | shares |  |  |  |  |  |  | 0 | 0 |  |  |  |
Operation and maintenance |  |  |  |  |  |  | $ 245,000,000 | $ 267,000,000 | $ 231,000,000 |  |  |
Separation related transaction costs |  |  |  |  |  |  |  |  | 20,000,000 |  |  |
Amount by which the share of the underlying equity in the net assets exceeds the carrying amount |  |  |  |  |  |  | 352,000,000 | 368,000,000 |  |  |  |
Undistributed earnings from equity method investments |  |  |  |  |  |  | 0 | 43,000,000 |  |  |  |
Payments to acquire equity method investments |  |  |  |  |  |  | $ 7,000,000 | $ 5,000,000 | $ 11,000,000 |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common shares (in shares) | shares |  |  |  |  |  | 1,000 |  |  | 1,000 | [1] |  |
Common stock, shares outstanding (in shares) | shares |  |  |  |  |  |  | 96,971,000 | 96,755,000 | 96,734,000 |  |  | 0
Issuance of common shares to DTE Energy (in shares) | shares |  | 96,731,466 |  |  | 96,731,466 |  |  |  |  |  |  |
Related Party |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Operation and maintenance |  |  |  |  |  |  |  |  | $ 32,000,000 |  |  |
Related Party | Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common shares (in shares) | shares | 96,732,466 |  |  |  |  |  |  |  | 96,731,000 | [2] |  |
NEXUS Senior Unsecured Notes | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt issued |  |  | $ 750,000,000 |  |  |  |  |  |  |  |  |
Interest Rate |  |  | 5.52% |  |  |  |  |  |  |  |  |
Proceeds from issuance of debt |  |  | $ 371,000,000 |  |  |  |  |  |  |  |  |
Millennium |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Amount by which the share of the underlying equity in the net assets exceeds the carrying amount |  |  |  | $ 343,000,000 |  |  |  |  |  |  |  |
Payments to acquire equity method investments |  |  |  | $ 552,000,000 |  |  |  |  |  |  |  |
Additional ownership interest acquired |  |  |  | 0.2625 |  |  |  |  |  |  |  |
Ownership percentage |  |  |  | 52.50% |  |  | 52.50% | 52.50% |  |  |  |
Variable Interest Entity, Primary Beneficiary, Stonewall Gas Gathering |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
VIE ownership percentage |  |  |  |  |  |  | 85.00% |  |  |  |  |
Variable Interest Entity, Primary Beneficiary, South Romeo |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
VIE ownership percentage |  |  |  |  |  |  | 50.00% |  |  |  |  |
[1] | Issuance of common shares at $0.01 par value upon conversion to C Corporation from a single member LLC.
[2] | Issuance of common shares to DTE Energy in anticipation of the Separation.

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