Assets [Abstract] Assets: ASSETS LIABILITIES AND EQUITY Liabilities and Stockholders' Equity [Abstract] Accounts receivable (less allowance for doubtful accounts of $178 and $196, respectively) Accounts receivable (less allowance for doubtful accounts of $288 and $265, 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 Ending Balance Beginning Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total Equity 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 Total DTE Energy Company Equity 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 Accumulated Other Comprehensive Income (Loss), Net of Tax Ending balance, Accumulated Other Comprehensive Loss Beginning balance, Accumulated Other Comprehensive Loss Accumulated other comprehensive loss 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, without par value, 400,000,000 shares authorized, 169,346,329 and 169,428,406 shares issued and outstanding, respectively Common Stock, Value, Issued Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Total Noncurrent Liabilities, Noncurrent Total Noncurrent Liabilities Other Liabilities, Noncurrent Other long term liabilities Other Decommissioning Liability, Noncurrent Decommissioning cost of Fermi 2 Decommissioning cost of Fermi 2 Nuclear decommissioning 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 Liability, Noncurrent Regulatory liabilities, non-current Regulatory liabilities Deferred Tax Liabilities, Noncurrent Long-term deferred income tax liabilities Long-term deferred income tax liabilities Deferred income taxes Total Long-Term Debt (net of current portion) Long-term Debt and Capital Lease Obligations Capital Lease Obligations, Noncurrent Non-current portion, Capital leases Capital lease obligations Capital lease obligations Long-term Transition Bond, Noncurrent Securitization bonds Securitization bonds Other Long-term Debt, Noncurrent Trust preferred-linked securities Trust preferred-linked securities Long-term Debt, Excluding Current Maturities Long-term debt, exluding current maturities Mortgage bonds, notes and other 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 Accounts payable Accounts Payable, Current, Total Accounts Payable, Current Total Assets Assets Total Total Assets Noncurrent Assets, Noncurrent Total Noncurrent Assets Other Assets, Noncurrent Other assets Other Notes, Loans and Financing Receivable, Net Notes, Loans and Financing Receivable, Net, Total Notes receivable Securitized regulatory assets Securitized Regulatory Transition Assets, Noncurrent Regulatory Assets, Noncurrent Regulatory assets, non-current Regulatory assets Goodwill Ending balance Beginning balance Goodwill Property, Plant and Equipment, Net Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Net Property, Plant and Equipment 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 Total Accumulated amortization of property under capital leases Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross, Ending Balance Property, Plant and Equipment, Gross, Beginning Balance Gross carring amount Total Property, plant and equipment 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 Tax Assets, Net, Current Deferred Tax Assets, Net, Current, Ending Balance Deferred Tax Assets, Net, Current, Beginning Balance Current deferred income tax assets Deferred Tax Assets, Net, Current, Total Deferred income taxes Materials and supplies Other Inventory, Supplies Other Other Receivables Accounts Receivable, Net, Current Accounts receivable Accounts Receivable, Net, Current, Total Customer Restricted cash Restricted Cash and Cash Equivalents, Current Restricted cash 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 Less: Net Income Attributable to Noncontrolling Interests Net Income (Loss) Attributable to Noncontrolling Interest Less: Attributable to the Noncontrolling Interest From Net Income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Net income Income Tax Provision Income Tax Expense (Benefit) Income tax expense from continuing operations Income Tax Provision Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Cumulative Effects of Changes in Accounting Principles, Noncontrolling Interest Income before income taxes Income Before Income Taxes 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 Interest income Investment Income, Interest Interest Income Interest expense Interest Expense, Total Interest Expense Operating Income (Loss) Operating Income Operating Income 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 Cost of Goods and Services, Energy Commodities and Services Fuel, purchased power and gas Operating Revenues Electric and Gas Revenue Total 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 Long-term Debt [Text Block] 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] Net Increase in Cash and Cash Equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and Cash Equivalents, Period Increase (Decrease), Total 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 from (used) for investing activities Net Cash Provided by (Used in) Investing Activities Other Payments for (Proceeds from) Other Investing Activities 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 Payments To Acquire Property Plant And Equipment Non Utility Plant and equipment expenditures - 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 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 14) Changes in assets and liabilities, exclusive of changes shown separately (Note 23) 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 Net unrealized gains (losses) on investments Other Comprehensive Income, Available-for-sale Securities Adjustment, Net of Tax 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 Dividends, Common Stock, Cash Dividends declared on common stock Dividends declared - common shares Total Benefit obligations Other Comprehensive Income, Defined Benefit Plans Adjustment, Net of Tax Benefit obligations, net of tax Benefit obligations, net of tax Common Stock Retained Earnings Accumulated Other Comprehensive Loss Non-controlling 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 $- and $(1) 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 on derivatives: Amounts reclassified to income, net of taxes of $- and $- Other Comprehensive Income, Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax Gains (losses) during the period, net of taxes of $- and $- 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 Tax effect on benefit obligation Current period change, net of tax, benefit obligation Other Comprehensive Income, Defined Benefit Plans, Tax 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 Investment in nuclear decommissioning trust funds Redemption of long-term debt Current Assets Current Liabilities Stock-based compensation, distributions to noncontrolling interests and other Stock Issued During Period, Value, Share-based Compensation Stock Issued During Period, Shares, Share-based Compensation Stock-based compensation, distributions to noncontrolling interests 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 Receivable, Current Balance at End of Period Balance at Beginning of Period Allowance for doubtful accounts 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 [Abstract] Statements of Changes in Shareholders' Equity and Comprehensive Income [Abstract] New Accounting Pronouncements [Abstract] New Accounting Pronouncements [Abstract] Long-Term Debt [Abstract] Long-term debt issued 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 Reporting Disclosure [Text Block] SEGMENT INFORMATION Document and Entity Information [Abstract] Document And Entity Information Abstract Document Fiscal Year Focus Document Fiscal Period Focus Commitments and Contingencies (Notes 7 and 11) Commitments and Contingencies 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 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 paid (received) for: Cash Flow, Supplemental Disclosures [Text Block] SUPPLEMENTAL CASH FLOW INFORMATION Significant Accounting Policies [Text Block] SIGNIFICANT ACCOUNTING POLICIES Earnings Per Share [Abstract] Significant Accounting Policies [Abstract] Significant Accounting Policies Abstract. Financial and Other Derivative Instruments [Abstract] Derivative Instruments and Hedging Activities Disclosure [Text Block] FINANCIAL AND OTHER DERIVATIVE INSTRUMENTS Public Utilities Disclosure [Text Block] REGULATORY MATTERS Other Comprehensive Income, Defined Benefit Plans Adjustment, Net of Tax [Abstract] Benefit obligations: Asset Retirement Obligations (Tables) [Abstract] Asset Retirement Obligations. Finite-Lived Intangible Assets, Gross Finite-Lived Intangible Assets, Gross, Total Gross Carrying amount of accumulated amortization of intangible assets Finite-Lived Intangible Assets, Accumulated Amortization Accumulated amortization of intangible assets Intangible asset amortization expense Derivative Liabilities Total derivatives Derivative liabilities, net of collateral Effective Income Tax Rate, Continuing Operations Effective income tax rate Effective tax rate from continuing operations Asset Retirement Obligations Text Block Reconciliation of asset retirement obligations Asset Retirement Obligations.