2101100 - Disclosure - Background, Organization, and Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 2401405 - Disclosure - Background, Organization, and Summary of Significant Accounting Policies - Accounts Receivable for Services (Detail) link:presentationLink link:calculationLink link:definitionLink 2401404 - Disclosure - Background, Organization, and Summary of Significant Accounting Policies - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 2401407 - Disclosure - Background, Organization, and Summary of Significant Accounting Policies- Other Income (Deductions) (Detail) link:presentationLink link:calculationLink link:definitionLink 2201201 - Disclosure - Background, Organization, and Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 2401406 - Disclosure - Background, Organization, and Summary of Significant Accounting Policies - Schedule of Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 2401403 - Disclosure - Background, Organization, and Summary of Significant Accounting Policies - Schedule of Other Property and Investments (Detail) link:presentationLink link:calculationLink link:definitionLink 2301302 - Disclosure - Background, Organization, and Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 2112100 - Disclosure - Business Acquisitions link:presentationLink link:calculationLink link:definitionLink 2412402 - Disclosure - Business Acquisitions - Narrative (Detail) link:presentationLink link:calculationLink link:definitionLink 2412403 - Disclosure - Business Acquisitions - Summary of Fair Values of Assets Acquired and Liabilities Assumed (Detail) link:presentationLink link:calculationLink link:definitionLink 2312301 - Disclosure - Business Acquisitions (Tables) link:presentationLink link:calculationLink link:definitionLink 2106100 - Disclosure - Common Stock link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - Common Stock (Detail) link:presentationLink link:calculationLink link:definitionLink 2306301 - Disclosure - Common Stock (Tables) link:presentationLink link:calculationLink link:definitionLink 2102100 - Disclosure - Components of Net Periodic Benefit Cost link:presentationLink link:calculationLink link:definitionLink 2402402 - Disclosure - Components of Net Periodic Benefit Cost (Detail) link:presentationLink link:calculationLink link:definitionLink 2302301 - Disclosure - Components of Net Periodic Benefit Cost (Tables) link:presentationLink link:calculationLink link:definitionLink 1001000 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1001501 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1004000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 1003000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 1005000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EQUITY link:presentationLink link:calculationLink link:definitionLink 1002000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME link:presentationLink link:calculationLink link:definitionLink 0001000 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 2105100 - Disclosure - Derivatives link:presentationLink link:calculationLink link:definitionLink 2405402 - Disclosure - Derivatives - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 2405403 - Disclosure - Derivatives - Notional Amounts under Swaps Contracts (Detail) link:presentationLink link:calculationLink link:definitionLink 2405404 - Disclosure - Derivatives - Paid to and Received from Counterparties for Settlements of Matured Swaps (Detail) link:presentationLink link:calculationLink link:definitionLink 2405405 - Disclosure - Derivatives - Swaps in Balance Sheet (Detail) link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - Derivatives (Tables) link:presentationLink link:calculationLink link:definitionLink 2104100 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 2404402 - Disclosure - Leases - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2404403 - Disclosure - Leases - Components of Lease Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2404408 - Disclosure - Leases - Schedule of Future Minimum Rental Payments for Operating Leases (Details) link:presentationLink link:calculationLink link:definitionLink 2404406 - Disclosure - Leases - Schedule of Maturities of Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2404406 - Disclosure - Leases - Schedule of Maturities of Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2404407 - Disclosure - Leases - Schedule of Rental and Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 2404404 - Disclosure - Leases - Supplemental Cash Flow Information Related to Leases (Details) link:presentationLink link:calculationLink link:definitionLink 2404405 - Disclosure - Leases - Supplemental Information Related to Leases Included in Balance Sheet (Details) link:presentationLink link:calculationLink link:definitionLink 2304301 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 2107100 - Disclosure - Long-Term Debt link:presentationLink link:calculationLink link:definitionLink 2407403 - Disclosure - Long-Term Debt - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 2407402 - Disclosure - Long-Term Debt - Schedule of Long-Term Debt (Detail) link:presentationLink link:calculationLink link:definitionLink 2307301 - Disclosure - Long-Term Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 2109100 - Disclosure - Other Comprehensive Income and Accumulated Other Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 2409403 - Disclosure - Other Comprehensive Income and Accumulated Other Comprehensive Income - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 2409405 - Disclosure - Other Comprehensive Income and Accumulated Other Comprehensive Income - Amounts Recognized Before Tax, Defined Benefit Plans (Detail) link:presentationLink link:calculationLink link:definitionLink 2409404 - Disclosure - Other Comprehensive Income and Accumulated Other Comprehensive Income - AOCI Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 2409402 - Disclosure - Other Comprehensive Income and Accumulated Other Comprehensive Income - Related Tax Effects Allocated to OCI (Detail) link:presentationLink link:calculationLink link:definitionLink 2409402 - Disclosure - Other Comprehensive Income and Accumulated Other Comprehensive Income - Related Tax Effects Allocated to OCI (Detail) link:presentationLink link:calculationLink link:definitionLink 2309301 - Disclosure - Other Comprehensive Income and Accumulated Other Comprehensive Income (Tables) link:presentationLink link:calculationLink link:definitionLink 2111100 - Disclosure - Redeemable Noncontrolling Interests link:presentationLink link:calculationLink link:definitionLink 2411402 - Disclosure - Redeemable Noncontrolling Interests - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 2411403 - Disclosure - Redeemable Noncontrolling Interests - Summary of Redeemable Noncontrolling Interest (Detail) link:presentationLink link:calculationLink link:definitionLink 2311301 - Disclosure - Redeemable Noncontrolling Interests (Tables) link:presentationLink link:calculationLink link:definitionLink 2103100 - Disclosure - Revenue link:presentationLink link:calculationLink link:definitionLink 2403402 - Disclosure - Revenue - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 2403403 - Disclosure - Revenue - Revenue Performance Obligation (Details) link:presentationLink link:calculationLink link:definitionLink 2403407 - Disclosure - Revenue - Schedule of Construction Services Contracts Receivable (Detail) link:presentationLink link:calculationLink link:definitionLink 2403404 - Disclosure - Revenue - Schedule of Gas Operating Revenue (Detail) link:presentationLink link:calculationLink link:definitionLink 2403406 - Disclosure - Revenue - Summary of Information about Receivables (Detail) link:presentationLink link:calculationLink link:definitionLink 2403405 - Disclosure - Revenue - Summary of Revenue Disaggregated by Service Type, and Contract Type (Detail) link:presentationLink link:calculationLink link:definitionLink 2303301 - Disclosure - Revenue (Tables) link:presentationLink link:calculationLink link:definitionLink 2110100 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 2410402 - Disclosure - Segment Information - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 2410403 - Disclosure - Segment Information - Schedule of Reporting Information (Detail) link:presentationLink link:calculationLink link:definitionLink 2310301 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 2108100 - Disclosure - Short-Term Debt link:presentationLink link:calculationLink link:definitionLink 2408401 - Disclosure - Short-Term Debt (Detail) link:presentationLink link:calculationLink link:definitionLink