2.2.0.25falsefalse1010 - Disclosure - Overview and Summary of Significant Accounting Policiestruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) USD ($) / shares $D2011Q1http://www.sec.gov/CIK0000787250duration2011-01-01T00:00:002011-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDPerShareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0dpl_OverviewAndSummaryOfSignificantAccountingPoliciesDisclosureAbstractdplfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseOverview and Summary of Significant Accounting Policies3false0dpl_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlockdplfalsenadurationThis element encompasses and aggregates all concepts of financial statement disclosures pertaining to accounting policies for...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<table style="font-size:10pt; font-family:'Times New Roman',times,serif;"> <tr> <td> 1.  Overview and Summary of Significant Accounting Policies   Description of Business   DPL is a diversified regional energy company organized in 1985 under the laws of Ohio.  DPLs two reportable segments are the Utility segment, comprised of its DP&L subsidiary, and the Competitive Retail segment, comprised of its DPLER subsidiary.  Refer to Note 15 of Notes to Condensed Consolidated Financial Statements for more information relating to these reportable segments.  DP&L does not have any reportable segments.   DP&L is a public utility incorporated in 1911 under the laws of Ohio.  DP&L is engaged in generation, transmission, distribution and the sale of electricity to residential, commercial, industrial and governmental customers in a 6,000 square mile area of West Central Ohio.  Electricity for DP&Ls 24 county service area is primarily generated at eight coal-fired power plants and is distributed to more than 500,000 retail customers.  Principal industries served include automotive, food processing, paper, plastic manufacturing and defense.   DP&Ls sales reflect general economic conditions, customers switching to other retail electric suppliers and seasonal weather patterns of the area.  DP&L sells any excess energy and capacity into the wholesale market.   DPLER sells competitive retail electric service, under contract, primarily to commercial and industrial customers.  DPLERs operations include those of its wholly-owned subsidiary, MC Squared, which was purchased on February 28, 2011.  DPLER has approximately 12,000 customers currently located throughout Ohio and Illinois.  DPLER does not have any transmission or generation assets, and all of DPLERs electric energy was purchased from DP&L or PJM to meet its sales obligations.   DPLs other significant subsidiaries include DPLE, which owns and operates peaking generating facilities from which it makes wholesale sales of electricity and MVIC, DPLs captive insurance company that provides insurance services to us and DPLs subsidiaries.   DPL also has a wholly-owned business trust, DPL Capital Trust II, formed for the purpose of issuing trust capital securities to investors.   All of DPLs subsidiaries are wholly-owned.  DP&L does not have any subsidiaries.   DP&Ls electric transmission and distribution businesses are subject to rate regulation by federal and state regulators while its generation business is deemed competitive under Ohio law.  Accordingly, DP&L applies the accounting standards for regulated operations to its electric transmission and distribution businesses and records regulatory assets when incurred costs are expected to be recovered in future customer rates, and regulatory liabilities when current cost recoveries in customer rates relate to expected future costs.   DPL and its subsidiaries employed 1,520 persons as of March 31, 2011, of which 1,485 employees were employed by DP&L, 17 employees were employed by DPLER, 11 employees were employed by MC Squared and 7 employees were employed by DPLE.  Approximately 53% of all employees are under a collective bargaining agreement which expires in October 2011.   Financial Statement Presentation   We prepare Consolidated Financial Statements for DPL.  DPLs Condensed Consolidated Financial Statements include the accounts of DPL and its wholly-owned subsidiaries except for DPL Capital Trust II which is not consolidated, consistent with the provisions of GAAP.   DP&L has undivided ownership interests in seven electric generating facilities and numerous transmission facilities.  These undivided interests in jointly-owned facilities are accounted for on a pro rata basis in DP&Ls Condensed Financial Statements.   Certain immaterial amounts from prior periods have been reclassified to conform to the current reporting presentation.   Deferred SECA revenue of $14.1 million as of March 31, 2011 and $15.4 million as of December 31, 2010 were reclassified from Regulatory liabilities to Other deferred credits.  The FERC-approved SECA billings are unearned revenue where the earnings process is not complete and do not represent a potential overpayment by retail ratepayers or potential refunds of costs that had been previously charged to retail ratepayers through rates.  Therefore, any amounts that are ultimately collected related to these charges would not be a reduction to future rates charged to retail ratepayers and therefore do not meet the criteria for recording as a regulatory liability under GAAP.  Refer to Note 14 of Notes to Condensed Consolidated Financial Statements for more information relating to SECA.   All material intercompany accounts and transactions are eliminated in consolidation.   These financial statements have been prepared in accordance with GAAP for interim financial statements and with the instructions of Form 10-Q and Regulation S-X.  Accordingly, certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with GAAP have been omitted from this interim report.  Therefore, our interim financial statements in this report should be read along with the annual financial statements included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2010.   In the opinion of our management, the Condensed Consolidated Financial Statements presented in this report contain all adjustments necessary to fairly state our financial condition as of March 31, 2011; our results of operations for the three months ended March 31, 2011; and our cash flows for the three months ended March 31, 2011.  Unless otherwise noted, all adjustments are normal and recurring in nature.  Due to various factors, including but not limited to, seasonal weather variations, the timing of outages of electric generating units, changes in economic conditions involving commodity prices and competition, and other factors, interim results for the three months ended March 31, 2011 may not be indicative of our results that will be realized for the full year ending December 31, 2011.   The preparation of financial statements in conformity with GAAP requires us to make estimates and judgments that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities, and the revenues and expenses of the periods reported.  Actual results could differ from these estimates.  Significant items subject to such estimates and judgments include: the carrying value of property, plant and equipment; unbilled revenues; the valuation of derivative instruments; the valuation of insurance and claims liabilities; the valuation of allowances for receivables and deferred income taxes; regulatory assets and liabilities; reserves recorded for income tax exposures; litigation; contingencies; the valuation of AROs; and assets and liabilities related to employee benefits.   Property, Plant and Equipment   We record our ownership share of our undivided interest in jointly-held plants as an asset in property, plant and equipment.  Property, plant and equipment are stated at cost.  For regulated transmission and distribution property, cost includes direct labor and material, allocable overhead expenses and an allowance for funds used during construction (AFUDC).  AFUDC represents the cost of borrowed funds and equity used to finance regulated construction projects.  Capitalization of AFUDC ceases at either project completion or at the date specified by regulators.  AFUDC capitalized during the three-month periods ended March 31, 2011 and 2010 was not material.   For unregulated generation property, cost includes direct labor and material, allocable overhead expenses and interest capitalized during construction using the provisions of GAAP relating to the accounting for capitalized interest.   For substantially all depreciable property, when a unit of property is retired, the original cost of that property less any salvage value is charged to Accumulated depreciation and amortization.   Property is evaluated for impairment when events or changes in circumstances indicate that its carrying amount may not be recoverable.   At March 31, 2011, neither DPL nor DP&L had any material plant acquisition adjustments or other plant-related adjustments.   Depreciation Study Change in Estimate   Depreciation expense is calculated using the straight-line method, which allocates the cost of property over its estimated useful life.  For DPLs generation, transmission and distribution assets, straight-line depreciation is applied monthly on an average composite basis using group rates.   In July 2010, DPL completed a depreciation rate study for non-regulated generation property based on its property, plant and equipment balances at December 31, 2009, with certain adjustments for subsequent property additions.  The results of the depreciation study concluded that many of DPLs composite depreciation rates should be reduced due to projected useful asset lives which are longer than those previously estimated.  DPL adjusted the depreciation rates for its non-regulated generation property effective July 1, 2010, resulting in a net reduction of depreciation expense.  For the three months ended March 31, 2011, the net reduction in depreciation expense amounted to $2.4 million ($1.6 million net of tax) and increased diluted EPS by approximately $0.01 per share.  During the first half of 2011, the net reduction in depreciation expense compared to the first half of 2010 is projected to be approximately $4.8 million ($3.2 million net of tax) or approximately $0.03 per diluted share.   Short-Term Investments   DPL utilizes VRDNs as part of its short-term investment strategy.  The VRDNs are of high credit quality and are secured by irrevocable letters of credit from major financial institutions.  VRDN investments have variable rates tied to short-term interest rates.  Interest rates are reset every seven days and these VRDNs can be tendered for sale back to the financial institution upon notice.  Although DPLs VRDN investments have original maturities over one year, they are frequently re-priced and trade at par.  We account for these VRDNs as available-for-sale securities and record them as short-term investments at fair value, which approximates cost, since they are highly liquid and are readily available to support DPLs current operating needs.   DPL also utilizes investment-grade fixed income corporate securities in its short-term investment portfolio.  These securities are accounted for as held-to-maturity investments.   Accounting for Taxes Collected from Customers and Remitted to Governmental Authorities   DP&L collects certain excise taxes levied by state or local governments from its customers. DP&Ls excise taxes are accounted for on a gross basis and recorded as revenues and general taxes in the accompanying Condensed Statements of Results of Operations as follows:   <table style="MARGIN-LEFT: 0.5in; WIDTH: 60%; BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="60%" border="0"> <tr style="HEIGHT: 0px"> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 50.12%; PADDING-TOP: 0in" valign="bottom" width="50%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4.16%; PADDING-TOP: 0in" valign="bottom" width="4%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 44.2%; PADDING-TOP: 0in" valign="bottom" width="44%" colspan="5"> Three Months Ended</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.52%; PADDING-TOP: 0in" valign="bottom" width="1%">  </td></tr> <tr style="HEIGHT: 0px"> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 50.12%; PADDING-TOP: 0in" valign="bottom" width="50%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4.16%; PADDING-TOP: 0in" valign="bottom" width="4%">  </td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 44.2%; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid" valign="bottom" width="44%" colspan="5"> March 31,</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.52%; PADDING-TOP: 0in" valign="bottom" width="1%">  </td></tr> <tr style="HEIGHT: 0px"> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 50.12%; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid" valign="bottom" width="50%"> $ in millions</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 4.16%; PADDING-TOP: 0in" valign="bottom" width="4%">  </td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 20.02%; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid" valign="bottom" width="20%" colspan="2"> 2011</td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 4.16%; PADDING-TOP: 0in; BORDER-BOTTOM: medium none" valign="bottom" width="4%">  </td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 20.02%; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid" valign="bottom" width="20%" colspan="2"> 2010</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.52%; PADDING-TOP: 0in" valign="bottom" width="1%">  </td></tr> <tr style="HEIGHT: 0px"> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 50.12%; PADDING-TOP: 0in; BORDER-BOTTOM: medium none" valign="top" width="50%" bgcolor="#CCEEFF"> State/Local excise taxes</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 4.16%; PADDING-TOP: 0in" valign="bottom" width="4%" bgcolor="#CCEEFF">  </td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 1.3%; PADDING-TOP: 0in; BORDER-BOTTOM: medium none" valign="bottom" width="1%" bgcolor="#CCEEFF"> $</td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 18.72%; PADDING-TOP: 0in; BORDER-BOTTOM: medium none" valign="bottom" width="18%" bgcolor="#CCEEFF"> 14.0</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 4.16%; PADDING-TOP: 0in" valign="bottom" width="4%" bgcolor="#CCEEFF">  </td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 1.3%; PADDING-TOP: 0in; BORDER-BOTTOM: medium none" valign="bottom" width="1%" bgcolor="#CCEEFF"> $</td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 18.72%; PADDING-TOP: 0in; BORDER-BOTTOM: medium none" valign="bottom" width="18%" bgcolor="#CCEEFF"> 14.2</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 1.52%; PADDING-TOP: 0in" valign="bottom" width="1%" bgcolor="#CCEEFF">  </td></tr> <tr style="HEIGHT: 0px"> <td style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none" width="225"></td> <td style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none" width="18"></td> <td style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none" width="7"></td> <td style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none" width="84"></td> <td style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none" width="18"></td> <td style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none" width="6"></td> <td style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none" width="84"></td> <td style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none" width="7"></td></tr></table>   Related Party Transactions   In the normal course of business, DP&L enters into transactions with other subsidiaries of DPL.  All material intercompany accounts and transactions are eliminated in DPLs Condensed Consolidated Financial Statements. The following table provides a summary of these transactions:   <table style="MARGIN-LEFT: 0.25in; WIDTH: 83.32%; BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="83%" border="0"> <tr style="HEIGHT: 0px"> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 64%; PADDING-TOP: 0in" valign="bottom" width="64%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 31.84%; PADDING-TOP: 0in" valign="bottom" width="31%" colspan="5"> Three Months Ended</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.16%; PADDING-TOP: 0in" valign="bottom" width="1%">  </td></tr> <tr style="HEIGHT: 0px"> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 64%; PADDING-TOP: 0in" valign="bottom" width="64%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%">  </td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 31.84%; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid" valign="bottom" width="31%" colspan="5"> March 31,</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.16%; PADDING-TOP: 0in" valign="bottom" width="1%">  </td></tr> <tr style="HEIGHT: 0px"> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 64%; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid" valign="bottom" width="64%"> $ in millions</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%">  </td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 14.42%; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid" valign="bottom" width="14%" colspan="2"> 2011</td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 3%; PADDING-TOP: 0in; BORDER-BOTTOM: medium none" valign="bottom" width="3%">  </td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 14.42%; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid" valign="bottom" width="14%" colspan="2"> 2010</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.16%; PADDING-TOP: 0in" valign="bottom" width="1%">  </td></tr> <tr style="HEIGHT: 0px"> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 64%; PADDING-TOP: 0in; BORDER-BOTTOM: medium none" valign="bottom" width="64%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%">  </td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 14.42%; PADDING-TOP: 0in; BORDER-BOTTOM: medium none" valign="bottom" width="14%" colspan="2">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%">  </td> <td style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 14.42%; PADDING-TOP: 0in; BORDER-BOTTOM: medium none" valign="bottom" width="14%" colspan="2">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.16%; PADDING-TOP: 0in" valign="bottom" width="1%">  </td></tr> <tr style="HEIGHT: 0px"> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 64%; PADDING-TOP: 0in" valign="top" width="64%" bgcolor="#CCEEFF"> DP&L Revenues:</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%" bgcolor="#CCEEFF">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 14.42%; PADDING-TOP: 0in" valign="bottom" width="14%" bgcolor="#CCEEFF" colspan="2">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%" bgcolor="#CCEEFF">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 14.42%; PADDING-TOP: 0in" valign="bottom" width="14%" bgcolor="#CCEEFF" colspan="2">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 1.16%; PADDING-TOP: 0in" valign="bottom" width="1%" bgcolor="#CCEEFF">  </td></tr> <tr style="HEIGHT: 0px"> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 64%; PADDING-TOP: 0in" valign="top" width="64%"> Sales to DPLER (a) </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.3%; PADDING-TOP: 0in" valign="bottom" width="1%"> $</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 13.12%; PADDING-TOP: 0in" valign="bottom" width="13%"> 75.1</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.3%; PADDING-TOP: 0in" valign="bottom" width="1%"> $</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 13.12%; PADDING-TOP: 0in" valign="bottom" width="13%"> 37.3</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.16%; PADDING-TOP: 0in" valign="bottom" width="1%">  </td></tr> <tr style="HEIGHT: 0px"> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 64%; PADDING-TOP: 0in" valign="bottom" width="64%" bgcolor="#CCEEFF">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%" bgcolor="#CCEEFF">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 14.42%; PADDING-TOP: 0in" valign="bottom" width="14%" bgcolor="#CCEEFF" colspan="2">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%" bgcolor="#CCEEFF">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 14.42%; PADDING-TOP: 0in" valign="bottom" width="14%" bgcolor="#CCEEFF" colspan="2">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 1.16%; PADDING-TOP: 0in" valign="bottom" width="1%" bgcolor="#CCEEFF">  </td></tr> <tr style="HEIGHT: 0px"> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 64%; PADDING-TOP: 0in" valign="top" width="64%"> DP&L Operation & Maintenance Expenses:</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 14.42%; PADDING-TOP: 0in" valign="bottom" width="14%" colspan="2">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 14.42%; PADDING-TOP: 0in" valign="bottom" width="14%" colspan="2">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.16%; PADDING-TOP: 0in" valign="bottom" width="1%">  </td></tr> <tr style="HEIGHT: 0px"> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 64%; PADDING-TOP: 0in" valign="top" width="64%" bgcolor="#CCEEFF"> Premiums paid for insurance services provided by MVIC (b)</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%" bgcolor="#CCEEFF">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 1.3%; PADDING-TOP: 0in" valign="bottom" width="1%" bgcolor="#CCEEFF"> $</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 13.12%; PADDING-TOP: 0in" valign="bottom" width="13%" bgcolor="#CCEEFF"> (0.8</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%" bgcolor="#CCEEFF"> )</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 1.3%; PADDING-TOP: 0in" valign="bottom" width="1%" bgcolor="#CCEEFF"> $</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 13.12%; PADDING-TOP: 0in" valign="bottom" width="13%" bgcolor="#CCEEFF"> (0.9</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; BACKGROUND: #cceeff; PADDING-BOTTOM: 0in; WIDTH: 1.16%; PADDING-TOP: 0in" valign="bottom" width="1%" bgcolor="#CCEEFF"> )</td></tr> <tr style="HEIGHT: 0px"> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 64%; PADDING-TOP: 0in" valign="top" width="64%"> Expense recoveries for services provided to DPLER (c)</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.3%; PADDING-TOP: 0in" valign="bottom" width="1%"> $</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 13.12%; PADDING-TOP: 0in" valign="bottom" width="13%"> 0.9</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 3%; PADDING-TOP: 0in" valign="bottom" width="3%">  </td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.3%; PADDING-TOP: 0in" valign="bottom" width="1%"> $</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 13.12%; PADDING-TOP: 0in" valign="bottom" width="13%"> 0.9</td> <td style="PADDING-RIGHT: 0in; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; WIDTH: 1.16%; PADDING-TOP: 0in" valign="bottom" width="1%">  </td></tr></table>     (a)       DP&L sells power to DPLER in Ohio to satisfy the electric requirements of its retail customers.  The revenues associated with sales to DPLER are recorded as wholesale sales in DP&Ls Condensed Financial Statements.  The increase in DP&Ls sales to DPLER in Ohio during the three months ended March 31, 2011 compared to the similar period in 2010 is primarily due to an increase in customers electing to switch their generation service from DP&L to DPLER.  DP&L did not sell any power to MC Squared during either of these periods. (b)       MVIC, a wholly-owned captive insurance subsidiary of DPL, provides insurance coverage to DP&L and other DPL subsidiaries for workers compensation, general liability, property damages and directors and officers liability.  These amounts represent insurance premiums paid by DP&L to MVIC. (c)        In the normal course of business DP&L incurs and records expenses on behalf of DPLER (including MC Squared). Such expenses include but are not limited to employee-related expenses, accounting, information technology, payroll, legal and other administration expenses. DP&L subsequently charges these expenses to DPLER at DP&Ls cost and credits the expense in which they were initially recorded.   Recently Issued Accounting Standards   There were no recently issued accounting standards that could potentially have a significant impact on our financial statements.  The FASB is expected to issue new accounting standards on fair value, leasing, financial instruments, other comprehensive income and revenue recognition by the end of 2011.  At this time, we cannot determine the impact these standards may have on our overall results of operations, financial conditions or cash flows.  </td></tr></table> 1.  Overview and Summary of Significant Accounting Policies   Description of Business   DPL is a diversified regional energy company organizedfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis element encompasses and aggregates all concepts of financial statement disclosures pertaining to accounting policies for the reporting entity into a single text block. Descriptions of the basis of presentation, business description, significant accounting policies, consolidations, reclassifications, new pronouncements not yet adopted and changes in accounting principles may be encapsulated in one footnote.No authoritative reference available.falsefalseOverview and Summary of Significant Accounting Policies12Overview and Summary of Significant Accounting PoliciesUnKnownUnKnownUnKnownUnKnownfalsetrue