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Contingencies (Details) $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Nov. 30, 2012 item | Mar. 31, 2020 USD ($) a | Jun. 30, 2019 USD ($)
Environmental remediation |  |  |
Number of potentially responsible parties (PRPs) | item | 50 |  |
Number of industrial companies and governmental entities under review | item | 30 |  |
Number of PRP groups discussing allocation proposals | item | 2 |  |
Total site remediation costs expected to cover river bottom area in excess of amount spent to date |  | $ 342 |
Area of river bottom to be remediated (in acres) | a |  | 200 |
Project costs to date |  | $ 100 |
Prior year collections of ICMS amounts realizable |  |  | $ 57
Other Current Liabilities And Other Noncurrent Liabilities |  |  |
Environmental remediation |  |  |
Estimated potential liability for all environmental matters |  | $ 28 |

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- Definition Represents the area of river bottom to be remediated with respect to the Lower Duwamish site located in Seattle, Washington. + References No definition available. + Details
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- Definition The number of industrial companies and government entities under review with respect to the Lower Duwamish site located in Seattle, Washington. + References No definition available. + Details
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- Definition The number of potentially responsible parties (PRP) groups in discussions of allocation proposals with respect to the Lower Duwamish site located in Seattle, Washington. + References No definition available. + Details
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- Definition Total amount of site remediation costs in excess of those spent to date expected under proposed remediation action plan. + References No definition available. + Details
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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 + Details
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