XML 62 R50.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

COMMITMENTS AND CONTINGENCIES (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract] |
Schedule of regulatory assets and reserves related to manufactured gas plant sites | We have established the following regulatory assets and reserves for manufactured gas plant sites:
(in millions) |  | March 31, 2024 |  | December 31, 2023
Regulatory assets |  | $ | 583.8 |  |  | $ | 596.8 |
Reserves for future environmental remediation |  | 448.9 |  |  | 463.7 |

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of information about obligations resulting from other commitments. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration