2112100 - Disclosure - BENEFIT PLANS: link:presentationLink link:calculationLink link:definitionLink 2312301 - Disclosure - BENEFIT PLANS: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2412402 - Disclosure - BENEFIT PLANS: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 2116100 - Disclosure - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME: CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME: link:presentationLink link:calculationLink link:definitionLink 2316301 - Disclosure - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2416402 - Disclosure - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 2109100 - Disclosure - COMMITMENTS: link:presentationLink link:calculationLink link:definitionLink 2309301 - Disclosure - COMMITMENTS: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2409402 - Disclosure - COMMITMENTS: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 2107100 - Disclosure - COMMON STOCK: link:presentationLink link:calculationLink link:definitionLink 2307301 - Disclosure - COMMON STOCK: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2407402 - Disclosure - COMMON STOCK: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 1003500 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 1003000 - Statement - Condensed Consolidated Balance Sheets Statement link:presentationLink link:calculationLink link:definitionLink 1004000 - Statement - Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 1002000 - Statement - Condensed Consolidated Statements of Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 1002500 - Statement - Condensed Consolidated Statements of Comprehensive Income (Parenthetical) (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 1005000 - Statement - Condensed Consolidated Statements of Equity link:presentationLink link:calculationLink link:definitionLink 1005500 - Statement - Condensed Consolidated Statements of Equity (Parenthetical) (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 1001000 - Statement - Condensed Consolidated Statements of Income Statement link:presentationLink link:calculationLink link:definitionLink 2110100 - Disclosure - CONTINGENCIES: link:presentationLink link:calculationLink link:definitionLink 2310301 - Disclosure - CONTINGENCIES: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2410402 - Disclosure - CONTINGENCIES: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 2413404 - Disclosure - Derivative Commodities and Disclosures (Details) link:presentationLink link:calculationLink link:definitionLink 2113100 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS: link:presentationLink link:calculationLink link:definitionLink 2313301 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2413402 - Disclosure - Derivative Instruments Fair Value and Offsets Table (Details) link:presentationLink link:calculationLink link:definitionLink 2413403 - Disclosure - Derivative Instruments Gains (Loss) on Derivatives Recognized in Income (Details) link:presentationLink link:calculationLink link:definitionLink 0001000 - Document - Document and Entity Information Document link:presentationLink link:calculationLink link:definitionLink 2108100 - Disclosure - EARNINGS PER SHARE: link:presentationLink link:calculationLink link:definitionLink 2308301 - Disclosure - EARNINGS PER SHARE: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2408402 - Disclosure - EARNINGS PER SHARE: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 2114100 - Disclosure - FAIR VALUE MEASUREMENTS: link:presentationLink link:calculationLink link:definitionLink 2414403 - Disclosure - FAIR VALUE MEASUREMENTS: Fair Value, by Balance Sheet Grouping (Details) link:presentationLink link:calculationLink link:definitionLink 2314301 - Disclosure - FAIR VALUE MEASUREMENTS: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2414402 - Disclosure - FAIR VALUE MEASUREMENTS: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 2102100 - Disclosure - INCOME TAXES: link:presentationLink link:calculationLink link:definitionLink 2302301 - Disclosure - INCOME TAXES: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2402402 - Disclosure - INCOME TAXES: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - LONG-TERM DEBT: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2405402 - Disclosure - LONG-TERM DEBT: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 2105100 - Disclosure - LONG-TERM DEBT: LONG-TERM DEBT: link:presentationLink link:calculationLink link:definitionLink 2106100 - Disclosure - NOTES PAYABLE: link:presentationLink link:calculationLink link:definitionLink 2306301 - Disclosure - NOTES PAYABLE: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - NOTES PAYABLE: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 2103100 - Disclosure - REGULATORY MATTERS: link:presentationLink link:calculationLink link:definitionLink 2403401 - Disclosure - REGULATORY MATTERS: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 2115100 - Disclosure - SEGMENT INFORMATION: link:presentationLink link:calculationLink link:definitionLink 2315301 - Disclosure - SEGMENT INFORMATION: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2415402 - Disclosure - SEGMENT INFORMATION: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 2101100 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: link:presentationLink link:calculationLink link:definitionLink 2301302 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: Level 3 (Tables) link:presentationLink link:calculationLink link:definitionLink 2401403 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: Level 4 (Details) link:presentationLink link:calculationLink link:definitionLink 2201201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: Organization, Consolidation, Presentation, and Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink