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COMMITMENTS AND CONTINGENCIES (Tables) | 9 Months Ended
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Sep. 30, 2019
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) |  | September 30, 2019 |  | December 31, 2018
Regulatory assets |  | $ | 719.6 |  |  | $ | 687.1 |
Reserves for future environmental remediation |  | 631.8 |  |  | 616.4 |

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- Definition Tabular disclosure of information about obligations resulting from other commitments. + References No definition available. + Details
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