Assets [Abstract] Assets: ASSETS LIABILITIES AND EQUITY Liabilities and Stockholders' Equity [Abstract] Accounts receivable (less allowance for doubtful accounts of $288 and $265, respectively) Accounts receivable (less allowance for doubtful accounts of $222 and $262, respectively) Inventories Inventory, Net [Abstract] Investments Long-term Investments [Abstract] Property Property, Plant and Equipment, Net [Abstract] Other Assets Assets, Noncurrent [Abstract] Long-Term Debt (net of current portion) Long-term Debt and Capital Lease Obligations [Abstract] Other Liabilities Liabilities, Noncurrent [Abstract] Stockholders' Equity Attributable to Parent [Abstract] Equity Total Liabilities and Equity Liabilities and Stockholders' Equity Total Equity Beginning Balance Ending Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Stockholders' Equity Attributable to Noncontrolling Interest Stockholders' Equity Attributable to Noncontrolling Interest, Ending Balance Stockholders' Equity Attributable to Noncontrolling Interest, Beginning Balance Noncontrolling interests Noncontrolling interests Stockholders' Equity Attributable to Parent Stockholders' Equity Attributable to Parent, Ending Balance Stockholders' Equity Attributable to Parent, Beginning Balance Total DTE Energy Company Shareholders' Equity Total DTE Energy Company Equity Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit), Total Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit) Common Stock, Value, Issued Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Total Common stock, without par value, 400,000,000 shares authorized, 169,117,259 and 165,400,045 shares issued and outstanding, respectively Noncurrent Liabilities, Noncurrent Total Noncurrent Liabilities Other Liabilities, Noncurrent Other long term liabilities Other Nuclear decommissioning Decommissioning Liability, Noncurrent Accrued postretirement liability Other Postretirement Defined Benefit Plan, Liabilities, Noncurrent Accrued pension liability Defined Benefit Pension Plan, Liabilities, Noncurrent Transportation And Storage Contracts Noncurrent Liabilities Liabilities from transportation and storage contracts Liabilities from transportation and storage contracts Third party transportation capacity contracts. Derivative Liabilities, Noncurrent Derivative liabilities Noncurrent liabilities Derivative liabilities Unamortized investment tax credit Accumulated Deferred Investment Tax Credit Asset Retirement Obligations, Noncurrent Asset Retirement Obligations, Noncurrent, Ending Balance Asset retirement obligations, net Asset retirement obligations Regulatory liabilities Regulatory Liability, Noncurrent, Total Regulatory Liability, Noncurrent Deferred income taxes Deferred Tax Liabilities, Noncurrent Total Long-Term Debt (net of current portion) Long-term Debt and Capital Lease Obligations Capital Lease Obligations, Noncurrent Capital lease obligations Capital lease obligations Securitization bonds Long-term Transition Bond, Noncurrent Other Long-term Debt, Noncurrent Trust preferred-linked securities Mortgage bonds, notes and other Long-term Debt, Excluding Current Maturities, Total Long-term Debt, Excluding Current Maturities Current Liabilities, Current Total Current Liabilities Other Liabilities, Current Other Other current liabilities Long-term Debt and Capital Lease Obligations, Current Long-Term Debt Long-term Debt and Capital Lease Obligations, Current, Total Current portion long-term debt, including capital leases Short-term borrowings Short-term Borrowings, Total Short-term Borrowings Dividends payable Dividends Payable, Current Accrued interest Accrued Liabilities, Current, Total Accrued Liabilities, Current Accounts payable Accounts Payable, Current, Total Accounts Payable, Current Total Assets Assets Total Noncurrent Assets, Noncurrent Total Noncurrent Assets Other Assets, Noncurrent Other assets Other Notes receivable Notes, Loans and Financing Receivable, Net, Total Notes, Loans and Financing Receivable, Net Intangible assets Finite-Lived Intangible Assets, Net, Total Finite-Lived Intangible Assets, Net Securitized regulatory assets Securitized Regulatory Transition Assets, Noncurrent Regulatory assets Regulatory Assets, Noncurrent Goodwill Goodwill, Beginning Balance Goodwill, Ending Balance Goodwill Property, Plant and Equipment, Net Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Property, plant and equipment, net Property, plant and equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less accumulated depreciation, depletion and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance Less accumulated depreciation and depletion Property, plant and equipment Property, Plant and Equipment, Gross, Total Property, Plant and Equipment, Gross, Beginning Balance Property, Plant and Equipment, Gross, Ending Balance Property, Plant and Equipment, Gross Long-term Investments Total Investments Other Long-term Investments Other investments Other Other Investments included in non current assets Decommissioning Fund Investments Nuclear decommissioning trusts Total Nuclear decommissioning trust funds Current Assets, Current Total Current Assets Other Assets, Current Other Other current assets Deferred income taxes Deferred Tax Assets, Net, Current, Total Deferred Tax Assets, Net, Current, Beginning Balance Deferred Tax Assets, Net, Current, Ending Balance Deferred Tax Assets, Net, Current Materials and supplies Other Inventory, Supplies Fuel and gas Inventory, Finished Goods, Total Inventory, Finished Goods Other Other Receivables Accounts Receivable, Net, Current Accounts receivable Accounts Receivable, Net, Current, Total Customer Restricted cash Restricted Cash and Cash Equivalents, Current Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents at End of Period Cash and Cash Equivalents at Beginning of Period Cash and cash equivalents Common stock, without par value Common Stock, No Par Value Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued, Total Common Stock, Shares, Issued Common stock, shares outstanding Beginning Balance, shares Ending Balance, shares Common Stock, Shares, Outstanding Common Stock, Dividends, Per Share, Declared Distributed (dividends per common share) Dividends Declared per Common Share Weighted Average Number of Shares Outstanding, Diluted Common shares for dilutive calculation Diluted Weighted Average Number of Shares Outstanding, Basic Average number of common shares outstanding Average number of common shares outstanding Basic Earnings Per Share, Diluted [Abstract] Diluted Earnings per Share Diluted Earnings per Common Share Earnings Per Share, Basic [Abstract] Basic Earnings per Share Basic Earnings per Common Share Operating Expenses Operating Expenses [Abstract] Other (Income) and Deductions Other Nonoperating Income (Expense) [Abstract] Net Income Attributable to DTE Energy Net Income (Loss) Attributable to Parent Net Income Attributable to DTE Energy Company Net Income Attributable to DTE Energy Company Net Income (Loss) Attributable to Noncontrolling Interest Less: Net Income Attributable to Noncontrolling Interests Less: Attributable to the Noncontrolling Interest From Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Net income Net Income Income Tax Expense (Benefit) Income tax expense related to Corporate entities Income Tax Provision Income Tax Provision Income Before Income Taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Cumulative Effects of Changes in Accounting Principles, Noncontrolling Interest, Total Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Cumulative Effects of Changes in Accounting Principles, Noncontrolling Interest Nonoperating Income (Expense) Total Other (Income) and Deductions Total Other (Income) and Deductions Total Other (Income) and Deductions Other Nonoperating Expense Other expenses Other expenses Other expenses Other Nonoperating Income Other income Other income Investment Income, Interest Interest income Interest expense Interest Expense, Total Interest Expense Operating Income (Loss) Operating Income Operating Income Operating Expenses Total operating expenses Total Operating Expenses Other asset (gains) and losses, reserves and impairments, net Other Cost and Expense, Operating Taxes other than income Taxes, Miscellaneous, Total Taxes, Miscellaneous Depreciation, depletion and amortization Cost of Services, Depreciation and Amortization, Total Cost of Services, Depreciation and Amortization Other asset (gains) and losses, reserves and impairments, net Fuel, purchased power and gas Cost of Goods and Services, Energy Commodities and Services Electric and Gas Revenue Total Operating Revenues Operating Revenues Statement [Table] Statement [Line Items] Assets, Current [Abstract] Liabilities, Current [Abstract] Other asset (gains) and losses, reserves and impairments, net Entity Public Float Entity Public Float Short-Term Credit Arrangements and Borrowings [Abstract] Short Term Credit Arrangements And Borrowings [Abstract] Short Term Credit Arrangements and Borrowings. Commitments and Contingencies [Abstract] Commitments and Contingencies [Abstract] Commitments And Contingencies. NEW ACCOUNTING PRONOUNCEMENTS Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Text Block] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Long-term Debt [Text Block] Long-term debt issued SHORT-TERM CREDIT ARRANGEMENTS AND BORROWINGS Short-term Debt [Text Block] Interest expense Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Adjustments to reconcile net income to net cash from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Cash and Cash Equivalents, Period Increase (Decrease) Cash and Cash Equivalents, Period Increase (Decrease), Total Net Increase (Decrease) in Cash and Cash Equivalents Net Cash Provided by (Used in) Financing Activities Net cash used for financing activities Other Proceeds from (Payments for) Other Financing Activities Issuance of common stock Proceeds from Issuance of Common Stock Short-term borrowings, net Proceeds from (Repayments of) Short-term Debt, Total Proceeds from (Repayments of) Short-term Debt Redemption of long-term debt Repayments of Long-term Debt, Total Repayments of Long-term Debt Net Cash Provided by (Used in) Investing Activities Net cash used for investing activities Payments for (Proceeds from) Other Investing Activities Other Other investments Investment in nuclear decommissioning trust funds Payments to Acquire Available-for-sale Securities, Total Payments to Acquire Available-for-sale Securities Proceeds from Sale of Available-for-sale Securities Proceeds from sales of securities Proceeds from Sale of Available-for-sale Securities, Total Proceeds from sale of nuclear decommissioning trust fund assets Increase (Decrease) in Restricted Cash Restricted cash for debt redemption Increase (Decrease) in Restricted Cash, Total Restricted cash for debt redemptions Proceeds from sale of other assets, net Proceeds from Sale of Other Productive Assets Payments To Acquire Property Plant And Equipment Non Utility Plant and equipment expenditures - non-utility Payments to acquire property, plant and equipment for non-utility assets. Payments To Acquire Property Plant And Equipment Utility Plant and equipment expenditures - utility Payments to acquire property, plant and equiment for utility assets. Net cash from operating activities Net Cash Provided by (Used in) Operating Activities Increase (Decrease) in Operating Capital Total Changes in Assets and Liabilities Changes in assets and liabilities, exclusive of changes shown separately (Note 15) Changes in assets and liabilities, exclusive of changes shown separately (Note 15) Other asset (gains), losses and reserves, net Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities, Other Deferred income taxes Deferred Income Taxes and Tax Credits, Total Deferred Income Taxes and Tax Credits Depreciation, depletion and amortization Depreciation, Depletion and Amortization, Total Depreciation, Depletion and Amortization Other Comprehensive Income, Available-for-sale Securities Adjustment, Net of Tax Net unrealized gains (losses) on investments Net change in unrealized losses on investments, net of tax Other Comprehensive Income, Derivatives Qualifying as Hedges, Net of Tax Net unrealized gains (losses) on derivatives Net change in unrealized losses on derivatives, net of tax Issuance of common stock, shares Stock Issued During Period, Shares, New Issues Issuance of common stock Stock Issued During Period, Value, New Issues Dividends declared - common shares Dividends, Common Stock, Cash Dividends declared on common stock Other Comprehensive Income, Defined Benefit Plans Adjustment, Net of Tax Benefit obligations, net of tax Other Comprehensive Income, Defined Benefit Plans Adjustment, Net of Tax, Total Benefit obligation, net of taxes of $3 and $4 Common Stock Retained Earnings Accumulated Other Comprehensive Loss Noncontrolling Interest Other comprehensive income (loss), net of tax: Comprehensive income attributable to DTE Energy Company Comprehensive Income, Net of Tax, Attributable to Parent Comprehensive Income, Net of Tax, Attributable to Noncontrolling Interest Less: Comprehensive income attributable to noncontrolling interests Less: Comprehensive income attributable to noncontrolling interests Comprehensive Income, Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income Comprehensive income Other Comprehensive Income, Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Unrealized losses on available for sale securities other than decommisioning investments reflected in other comprehensive income Gains (losses) during the period, net of taxes of $(1) and $1, respectively Gains (losses) during the period, net of taxes of $(6) and $6 Net unrealized gains (losses) on investments: Other Comprehensive Income, Available-for-sale Securities Adjustment, Net of Tax [Abstract] Net unrealized gains (losses) on derivatives: Net unrealized gains (losses) on derivatives: Other Comprehensive Income, Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax Amounts reclassified to income, net of taxes of $1 and $(1) Other Comprehensive Income, Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Gains (losses) during the period, net of taxes of $1 and $1 Gains (losses) during the period, net of taxes of $1 and $1 Other Comprehensive Income, Defined Benefit Plans, Tax Tax effect on benefit obligation Tax effect on benefit obligation Tax effect on gains (losses) during the period Other Comprehensive Income, Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Tax effect on gains (losses) during the period Other Comprehensive Income, Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Fair Value Disclosures [Text Block] FAIR VALUE Plant and equipment expenditures - utility Plant and equipment expenditures - utility Plant and equipment expenditures - non-utility Investment in nuclear decommissioning trust funds Redemption of long-term debt Current Assets Current Liabilities Stock Issued During Period, Value, Share-based Compensation Stock-based compensation and other Stock Issued During Period, Shares, Share-based Compensation Stock-based compensation and other, shares Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Common Stock, Shares Outstanding Statement, Equity Components [Axis] Equity Component [Domain] DTE Energy [Member] Dividends on common stock Dividends on common stock Payments of Dividends, Common Stock Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current, Beginning Balance Allowance for Doubtful Accounts Receivable, Current, Ending Balance Allowance for Doubtful Accounts Receivable, Current Tax effect on gains (losses) during the period Consolidated Statements of Financial Position [Abstract] Statement of Financial Position [Abstract] Consolidated Statements of Operations [Abstract] Statement of Operations [Abstract] Consolidated Statements of Cash Flows [Abstract] Consolidated Statements of Cash Flows [Abstract] Consolidated Statements of Changes in Equity and Comprehensive Income [Abstract] Statements of Changes in Shareholders' Equity and Comprehensive Income [Abstract] Cost Direct Operating Supplies Maintenance Operation and maintenance Operation and maintenance Operating expenses associated with normal revenue producing activities, including payroll, outside labor, material purchases, bad debt expense and employee benefits. New Accounting Pronouncements [Abstract] New Accounting Pronouncements [Abstract] Long-Term Debt [Abstract] Long-term debt issued Regulatory Matters [Abstract] Regulatory Matters [Abstract] Consolidated Statements of Comprehensive Income [Abstract] Statements of Comprehensive Income [Abstract] Weighted Average Common Shares Outstanding Weighted Average Number of Shares Outstanding, Diluted [Abstract] Segment Information [Abstract] Segment Information. SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Document and Entity Information [Abstract] Document And Entity Information Abstract Document Fiscal Year Focus Document Fiscal Period Focus Commitments and Contingencies Commitments and Contingencies (Notes 7 and 12) Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] ORGANIZATION AND BASIS OF PRESENTATION Fair Value [Abstract] Fair Value Abstract. Asset Retirement Obligations [Abstract] Asset Retirement Obligations Asset Retirement Obligation Disclosure [Text Block] ASSET RETIREMENT OBLIGATIONS Common Stock [Abstract] Stockholders' Equity Note Disclosure [Text Block] COMMON STOCK Earnings Per Share [Text Block] EARNINGS PER SHARE Pension and Other Postretirement Benefits Disclosure [Text Block] RETIREMENT BENEFITS AND TRUSTEED ASSETS Retirement Benefits and Trusteed Assets [Abstract] Stock-Based Compensation [Abstract] Disclosure Of Compensation Related Costs Share Based Payments Text Block STOCK-BASED COMPENSATION Supplemental Cash Flow Information [Abstract] Cash Flow, Supplemental Disclosures [Text Block] SUPPLEMENTAL CASH FLOW INFORMATION Total Benefit obligations Benefit obligations, net of tax Total Benefit obligations Total Benefit obligations Total Benefit obligations. Significant Accounting Policies [Text Block] SIGNIFICANT ACCOUNTING POLICIES