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ACQUISITIONS AND DIVESTITURES - Water Infrastructure Assets (Details) - Water Infrastructure Assets - USD ($) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Dec. 20, 2018 | Dec. 31, 2018 | Oct. 01, 2018
Purchase and Sale Agreement |  |  |
ACQUISITIONS AND DIVESTITURES |  |  |
Sale price of asset in cash | $ 210.9 |  |
Incentives payable per year if certain thresholds are met |  |  | $ 25.0
(Gain) loss on sale of Water Assets |  |  |
ACQUISITIONS AND DIVESTITURES |  |  |
Gain (loss) from sale of other operating property and equipment |  | $ 119.0 |

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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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