0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Statements of Consolidated Financial Position link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Statements of Consolidated Financial Position (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Statements Of Consolidated Operations link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Statements Of Consolidated Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Statements Of Consolidated Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Statements of Consolidated Changes in Equity link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - ACQUISITIONS link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - REVENUES link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - SEGMENT REPORTING link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - PROPERTY, PLANT AND EQUIPMENT link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - GOODWILL AND INTANGIBLE ASSETS AND LIABILITIES link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - DEBT AND CREDIT FACILITIES link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - PENSIONS AND OTHER POSTRETIREMENT BENEFITS link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - STOCK COMPENSATION PLANS link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - LEASE OBLIGATIONS link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - ASSET RETIREMENT OBLIGATIONS link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - CAPITAL STOCK link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - VARIABLE INTEREST ENTITIES link:presentationLink link:calculationLink link:definitionLink 9952175 - Disclosure - EARNINGS PER SHARE link:presentationLink link:calculationLink link:definitionLink 9952176 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 9952177 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - ACQUISITIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - REVENUES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - SEGMENT REPORTING (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - GOODWILL AND INTANGIBLE ASSETS AND LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - DEBT AND CREDIT FACILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - STOCK COMPENSATION PLANS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - LEASE OBLIGATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - ASSET RETIREMENT OBLIGATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING (Tables) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - ACCUMULATED OTHERCOMPREHENSIVE INCOME (LOSS) (Tables) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - VARIABLE INTEREST ENTITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - EARNINGS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - COMMITMENT AND CONTINGENCIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Depreciation Methods and Useful Lives (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - SUPPLEMENTART FINANCIAL STATEMENT INFORMATION - Supply Finance Program (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION - Inventory (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION - Cash Flow Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION - Non-cash Investing and Financing Activities (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION - Restructuring (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - ACQUISITIONS - Consideration (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - ACQUISITIONS - Preliminary Purchase Price Allocation (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - ACQUISITIONS - Intangible Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - ACQUISITIONS - Pro Forma (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - ACQUISITIONS - Stelco Acquisition (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - REVENUES - By Market and Product Line (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - SEGMENT REPORTING - Schedule Of Segment Reporting Information, By Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - SEGMENT REPORTING - Reconciliation of Net Income (Loss) to Adjusted EBITDA (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - SEGMENT REPORTING - Depreciation, Depletion and Amortization and Capital Additions By Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - SEGMENT REPORTING - Summary of Assets by Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - SEGMENTS REPORTING - Revenues and Property, Plant and Equipment, Net by Geographical Location (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - PROPERTY, PLANT AND EQUIPMENT - Value Of Each Of The Major Classes Of Consolidated Depreciable Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - PROPERTY, PLANT AND EQUIPMENT - Book Value of Land and Mineral Rights Disclosure (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - GOODWILL AND INTANGIBLE ASSETS AND LIABILITIES - Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - GOODWILL AND INTANGIBLE ASSETS AND LIABILITIES - Intangibles (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - GOODWILL AND INTANGIBLE ASSETS AND LIABILITIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - DEBT AND CREDIT FACILITIES - Schedule Of Long-Term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - DEBT AND CREDIT FACILITIES - Debt Issuances and Terms (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - DEBT AND CREDIT FACILITIES - ABL Facility (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - DEBT AND CREDIT FACILITIES - Schedule of Debt Instrument Maturities (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - PENSION AND OTHER POSTRETIREMENT BENEFITS - Obligations and Funded Status (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Components Of Net Periodic Benefit Cost (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - PENSION AND POST RETIREMENT BENEFITS - Components of Accumulated Other Comprehensive Loss (Income) (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Contributions (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - PENSION AND OTHER POSTRETIREMENT BENEFITS - Estimated Future Benefit Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Weighted-Average Assumptions Used to Determine Benefit Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Weighted-Average Assumptions Used to Determine Net Benefit Cost (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Assumed Health Care Cost Trend Rates (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Target Allocation and Actual Asset Allocations for Pension and VEBA Plan Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Fair Value of Plan Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - PENSIONS AND POSTRETIREMENT BENEFITS - Fair Value Measurements Using Significant Unobservable Inputs (Level 3) on Changes in Plan Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Defined Contribution Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Multiemployer Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - STOCK COMPENSATION PLANS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - STOCK COMPENSATION PLANS - Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - STOCK COMPENSATION PLANS - Performance Shares (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - STOCK COMPENSATION PLANS - Restricted Stock (Details) link:presentationLink link:calculationLink link:definitionLink 9955577 - Disclosure - STOCK COMPENSATION PLANS - Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 9955578 - Disclosure - STOCK COMPENSATION PLANS - Nonemployee Directors (Details) link:presentationLink link:calculationLink link:definitionLink 9955579 - Disclosure - INCOME TAXES - Schedule of Income Before Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955580 - Disclosure - INCOME TAXES - Schedule of Components of Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955581 - Disclosure - INCOME TAXES - Schedule of Effective Rate Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 9955581 - Disclosure - INCOME TAXES - Schedule of Effective Rate Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 9955582 - Disclosure - INCOME TAXES - Components of Cash Payments in Excess of Refunds Received (Details) link:presentationLink link:calculationLink link:definitionLink 9955583 - Disclosure - INCOME TAXES - Components of Income Taxes for Other than Continuing Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955584 - Disclosure - INCOME TAXES - Schedule of Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955585 - Disclosure - INCOME TAXES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955586 - Disclosure - INCOME TAXES Income Taxes - Schedule of Valuation Allowance (Details) link:presentationLink link:calculationLink link:definitionLink 9955587 - Disclosure - INCOME TAXES - Schedule of Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 9955588 - Disclosure - LEASE OBLIGATIONS - Lease Amounts Included in Statements of Consolidated Financial Position (Details) link:presentationLink link:calculationLink link:definitionLink 9955589 - Disclosure - LEASE OBLIGATIONS - Lease Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955590 - Disclosure - LEASE OBLIGATIONS - Other Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955591 - Disclosure - LEASE OBLIGATIONS - Future Minimum Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955591 - Disclosure - LEASE OBLIGATIONS - Future Minimum Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955592 - Disclosure - ASSET RETIREMENT OBLIGATIONS - Summary Of Asset Retirement Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955593 - Disclosure - ASSET RETIREMENT OBLIGATIONS - Asset Retirement Obligation Roll-forward (Details) link:presentationLink link:calculationLink link:definitionLink 9955594 - Disclosure - ASSET RETIREMENT OBLIGATIONS - Summary of Environmental Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955595 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Carrying Value And Fair Value Of Financial Instruments Disclosure (Details) link:presentationLink link:calculationLink link:definitionLink 9955596 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Changes in Fair Value of Employee Benefit Commitment (Details) link:presentationLink link:calculationLink link:definitionLink 9955597 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955598 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair Value of Derivative Asset (Details) link:presentationLink link:calculationLink link:definitionLink 9955599 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955600 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING - Balance Sheet Location (Details) link:presentationLink link:calculationLink link:definitionLink 9955601 - Disclosure - CAPITAL STOCK - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955602 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Changes in AOCI (loss) related to shareholders' equity (Details) link:presentationLink link:calculationLink link:definitionLink 9955603 - Disclosure - VARIABLE INTEREST ENTITIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955604 - Disclosure - EARNINGS PER SHARE - Earnings Per Share Computation (Details) link:presentationLink link:calculationLink link:definitionLink 9955605 - Disclosure - EARNINGS PER SHARE - Anti-Dilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955606 - Disclosure - COMMITMENTS AND CONTINGENCIES - Commitments Under Take-Or-Pay Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955607 - Disclosure - COMMITMENTS AND CONTINGENCIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink