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CONTINGENCIES (Detail) cubic_yard in Millions, $ in Millions |  |  |  |  |  |  |  |  |  |  |  | 1 Months Ended | 9 Months Ended |
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Oct. 02, 2021 USD ($) site | Apr. 14, 2021 USD ($) | Feb. 24, 2021 municipality | Dec. 04, 2020 USD ($) | Oct. 10, 2018 mi | Jun. 30, 2018 USD ($) Company | May 17, 2017 Hazardous_Substance | Mar. 30, 2017 Company | Mar. 31, 2016 USD ($) Company mi | Mar. 04, 2016 cubic_yard mi | Apr. 11, 2014 mi | Apr. 30, 2015 mi | May 31, 2007 Company mi | Oct. 02, 2021 USD ($) site | Jan. 02, 2021 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Superfund sites | site | 28 |  |  |  |  |  |  |  |  |  |  |  |  | 28 |
Environmental remediation costs deemed probable and reasonably estimable |  | $ 441.0 |  |  |  |  |  |  | $ 1,400.0 |  |  |  |  |  |
Environmental remediation, period construction of treatment facility to be maintained |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 years |
Number of miles of river | mi |  |  |  |  | 9 |  |  |  | 8.3 | 8.3 | 8.3 | 17 | 17 |  |
Cubic yards of settlement | cubic_yard |  |  |  |  |  |  |  |  |  | 3.5 |  |  |  |  |
Approximate implementation time |  |  |  |  |  |  |  |  | 6 years |  |  |  |  |  |
Number of other parties notified | Company |  |  |  |  |  |  |  |  | 105 |  |  |  |  |  |
Number of companies offered cash out settlements | Company |  |  |  |  |  |  |  | 20 |  |  |  |  |  |  |
Number of hazardous substances | Hazardous_Substance |  |  |  |  |  |  | 8 |  |  |  |  |  |  |  |
Number of companies named in suit | Company |  |  |  |  |  | 100 |  |  |  |  |  |  |  |  |
Estimated costs of remediation |  |  |  |  |  | $ 165.0 |  |  |  |  |  |  |  |  |
Number of municipalities, suit filed | municipality |  |  | 42 |  |  |  |  |  |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental remediation costs deemed probable and reasonably estimable |  |  |  | $ 420.0 |  |  |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental remediation costs deemed probable and reasonably estimable |  |  |  | $ 468.0 |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Other Types |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental remediation costs, reserve | $ 154.7 |  |  |  |  |  |  |  |  |  |  |  |  | $ 154.7 | $ 174.2
Reserve for environmental remediation costs, current | 48.0 |  |  |  |  |  |  |  |  |  |  |  |  | 48.0 |
Reserve for environmental remediation costs, noncurrent | 106.7 |  |  |  |  |  |  |  |  |  |  |  |  | 106.7 |
Accrual for environmental loss contingencies, EPA funded amount | 16.1 |  |  |  |  |  |  |  |  |  |  |  |  | 16.1 |
Accrual for environmental loss contingencies, obligation after EPA funding | 138.6 |  |  |  |  |  |  |  |  |  |  |  |  | 138.6 |
Property, Plant and Equipment, Other Types | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental remediation costs deemed probable and reasonably estimable | 89.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Other Types | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental remediation costs deemed probable and reasonably estimable | 225.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Centredale Site |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental remediation costs deemed probable and reasonably estimable | 61.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Kerr McGee Chemical Site |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental remediation costs, reserve | $ 22.2 |  |  |  |  |  |  |  |  |  |  |  |  | $ 22.2 |
Lower Passaic Cooperating Parties Group |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of companies | Company |  |  |  |  |  |  |  |  |  |  |  |  | 47 |  |

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