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Amount Of Expected Reimbursement By The Government, Percent

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Environmental Loss Contingency Statement Of Financial Position Extensible Enumeration Not Disclosed Flag

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Expected Contribution From Government

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Number of sites being investigated by the EPA associated with Crucible environmental matters.

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Number Of Claimants

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Number Of Facilities

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Number Of Non Priority Mines

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Number Of Priority Mines

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- Definition

Portion of the environmental site which is subject to remediation

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As determined by a Focused Feasibility Study (FFS), the estimated present value cost necessary to conduct the environmental remediation activities proposed by the FFS.

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The number of other potentially responsible parties that are participating in the cooperation parties group.

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Number of sites subject to various environmental remediation activities.

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Site Contingency, Number Of Sites Subject To Remediation Activities, Active Operations

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Site Contingency, Number Of Sites Subject To Remediation Activities, Addition

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- Definition

Site Contingency, Number Of Sites Subject To Remediation Activities, Cost Less Than 500K

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Site Contingency, Number Of Sites Subject To Remediation Activities To Enhanced Cap

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Site Contingency, Number Of Sites Subject To Remediation Activities, One Or More Subsidiaries Conducted Business But No Longer Do

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Site Contingency, Number Of Sites Subject To Remediation Activities, Remaining

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- Definition

As determined by a Remedial Investigation Feasibility Study (RI/FS), the estimated present value cost necessary to conduct the environmental remediation activities proposed by the RI/FS

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- Definition

Site Contingency, Sites Subject To Remediation Activities, Cost Per Site, Maximum Expected Cost

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section 50
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-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481931/410-30-50-10

Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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-Paragraph 10
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-URI https://asc.fasb.org/1943274/2147481931/410-30-50-10

Reference 4: http://www.xbrl.org/2003/role/exampleRef
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-URI https://asc.fasb.org/1943274/2147481899/410-30-55-16

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481931/410-30-50-7

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Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

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Amount of loss contingency liability.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of cash outflow reducing loss contingency liability.

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Number of pending claims pertaining to a loss contingency.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Best estimate of the reasonably possible loss exposure in excess of the amount accrued for environmental loss contingencies at an individual site.

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Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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Commitments and Contingencies - Additional Information (Details)					1 Months Ended		3 Months Ended	9 Months Ended
	Apr. 14, 2021 USD ($) mi	Jun. 30, 2018 party	Mar. 03, 2016 USD ($)	Apr. 11, 2014 USD ($) mi	Aug. 31, 2025 USD ($) mine	Sep. 30, 2022 USD ($)	Aug. 27, 2025 employee	Sep. 30, 2025 USD ($) site mine party mi	May 28, 2025 claim	Dec. 31, 2024 USD ($)	Jun. 04, 2024 claim	Nov. 30, 2022 facility site	Oct. 18, 2021	Oct. 31, 2016 USD ($)	Apr. 30, 2015 USD ($)
Site Contingency
Number of sites subject to remediation (sites) \| site								21
Number of sites, active operations (sites) \| site								1
Number of sites expected to cost less than 500K (sites) \| site								11
Expected future cost of remediation or investigation (less than)								$ 500,000
Number of sites subsidiaries formally conducted business but no longer do \| site								20
Environmental loss accrual								$ 37,400,000		$ 40,700,000
Environmental								$ 8,900,000
Environmental loss contingency statement of financial position extensible enumeration not disclosed flag								Consolidated Balance Sheets
Loss accrual								$ 15,900,000
Lower Passaic River Study Area
Site Contingency
Portion of site subject to remediation (miles) \| mi				8
Number of other potentially responsible parties \| party		120						70
Estimate of cost															$ 726,000,000
Estimate low end														$ 165,000,000
Lower Passaic River Study Area \| Minimum
Site Contingency
Site contingency, loss exposure in excess of accrual best estimate			$ 1,380,000,000	$ 953,000,000
Lower Passaic River Study Area \| Maximum
Site Contingency
Site contingency, loss exposure in excess of accrual best estimate			$ 1,730,000,000
Upper Nine Miles of the River
Site Contingency
Portion of site subject to remediation (miles) \| mi	9
Site contingency, loss exposure in excess of accrual best estimate	$ 441,000,000
Lower Eight Miles of River
Site Contingency
Environmental loss accrual								$ 700,000
Settlement payment						$ 5,900,000
Arizona Uranium Mines
Site Contingency
Number of sites subject to remediation (sites) \| site								21
Number of sites, active operations (sites) \| site								1
Environmental loss accrual								$ 11,200,000
Estimate low end					$ 3,600,000			$ 7,600,000
Investigative sites notice from EPA \| mine								8
Number of priority mines \| mine					2			2
Number of non priority mines \| mine								6
Site contingency, number of sites subject to enhanced cap remediation count \| mine								8
Percentage of expenses reimbursable by the U.S.													35.00%
Future contributions from U.S.								$ 3,600,000
Arizona Uranium Mines \| Minimum
Site Contingency
Site contingency, loss exposure in excess of accrual best estimate					$ 3,600,000
Arizona Uranium Mines \| Maximum
Site Contingency
Site contingency, loss exposure in excess of accrual best estimate					$ 15,900,000
Thorofare, New Jersey
Site Contingency
Number of sites, active operations (sites) \| site												1
Number of facilities (facilities) \| facility												2
GGB (ISRA) Investigation and Cleanup
Site Contingency
Environmental loss accrual								2,000,000
Water Valley, Mississippi
Site Contingency
Environmental loss accrual								7,700,000
Number of pending claims \| claim									8		8
Number of total plantiffs \| employee							150
Litigation reserve								$ 0
Number of sites subject to remediation, addition (sites) \| site								4
Number of sites subject to remediation, remaining (sites) \| site								17
Related Party \| Lower Passaic River Study Area
Site Contingency
Portion of site subject to remediation (miles) \| mi								17
Related Party \| Crucible Steel Corporation
Site Contingency
Portion of site subject to remediation (miles) \| mi								17