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Financial Statements
Condensed Consolidated Balance Sheets
Condensed Consolidated Balance Sheets (Parentheticals)
Condensed Consolidated Statements of Operations
Condensed Consolidated Statements of Comprehensive Income
Condensed Consolidated Statements of Cash Flows
Condensed Consolidated Statement of Equity (Deficit)
Notes to Financial Statements
Background and Basis of Presentation
Significant Accounting Policies
COVID-19 Impacts (Notes)
Discontinued Operations and Disposal Groups
Asset Impairments (Notes)
Related Party Transactions
Fair Value
Debt Obligations
Commitments and Contingencies
Pension and Postretirement Expense
Stock Compensation (Notes)
Segment Information
Changes in Accumulated Other Comprehensive Income (Notes)
Income Taxes (Notes)
Accounting Policies
Significant Accounting Policies (Policies)
Notes Tables
Discontinued Operations and Disposal Groups (Tables)
Related Party Transactions (Tables)
Fair Value (Tables)
Debt Obligations (Tables)
Commitments and Contingencies (Tables)
Pension and Postretirement Expense (Tables)
Segment Information (Tables)
Changes in Accumulated Other Comprehensive Income (Tables)
Notes Details
Background and Basis of Presentation (Details) - Number of Reportable Segments
Significant Accounting Policies (Details)
Discontinued Operations and Disposal Groups (Details)
Asset Impairments (Details)
Related Party Transactions (Details)
Fair Value (Details)
Debt Obligations (Details)
Commitments and Contingencies (Details) - Environmental Liabilities
Commitments and Contingencies (Details) - Non-Environmental Liabilities
Pension and Postretirement Expense (Details) - Schedule of Components of Net Benefit Cost
Stock Compensation (Details)
Segment Information (Details) - Revenues by Segment
Segment Information (Details) - EBITDA by Segment
Segment Information (Details) - Reconciliation of Segment EBITDA to Net Income
Changes in Accumulated Other Comprehensive Income (Details) - Summary of Changes in Accumulated Other Comprehensive Income
Income Taxes (Details)
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Uncategorized Items - hsc-20200930_htm.xml
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