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Litigation and Environmental - Lower Passaic River (Details) - Pending Litigation $ in Millions |  | 6 Months Ended
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Oct. 05, 2016 USD ($) | Jun. 30, 2020 USD ($) mi Parties
Lower Passaic River Study Area |  |
Site Contingency [Line Items] |  |
Miles of river | mi |  | 17
Number of Parties at a Joint Defense Group | Parties |  | 44
Lower Passaic River Study Area | EPA preferred alternative estimate |  |
Site Contingency [Line Items] |  |
Environmental Remediation Expense | $ |  | $ 1,700
Lower Passaic River Study Area | AOC required engineering and design work |  |
Site Contingency [Line Items] |  |
Environmental Remediation Expense | $ | $ 165 |
Lower Passaic River Study Area | Design |  |
Site Contingency [Line Items] |  |
Estimated Remedy Implementation Period | 4 years |
Lower Passaic River Study Area | Clean Up Implementation |  |
Site Contingency [Line Items] |  |
Estimated Remedy Implementation Period | 6 years |
Lower Passaic River Study Area, Lower Portion |  |
Site Contingency [Line Items] |  |
Miles of river | mi |  | 8

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