Regulatory Matters - Summary of Infrastructure Surcharge Authorizations (Details) - USD ($) $ in Millions	2 Months Ended	12 Months Ended
	Feb. 14, 2024	Dec. 31, 2023
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations		$ 86
Subsequent Event
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations	$ 31
New Jersey
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations		32
New Jersey | October 30, 2023
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations		15
New Jersey | June 29, 2023
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations		1
New Jersey | April 29, 2023
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations		16
Kentucky
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations		4
Indiana
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations		26
Indiana | March 23, 2023
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations		20
Indiana | March 08, 2023
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations		6
Missouri
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations		14
Missouri | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations	26
Pennsylvania
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations		3
West Virginia
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations		$ 7
Illinois | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Infrastructure surcharge authorizations	$ 5