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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.