2.2.0.7 false Long-Term Debt 0204 - Disclosure - Long-Term Debt true false false false 1 false false 2 Long-Term Debt [Abstract] 0 us-gaap_LongTermDebtByCurrentAndNoncurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 3 Long-Term Debt 1 us-gaap_LongTermDebtTextBlock us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0   <div style="font-family: Helvetica,Arial,sans-serif"> <div align="left" style="font-size: 10pt; margin-top: 12pt"><b>NOTE 4. LONG-TERM DEBT</b> </div> <div align="center" style="font-size: 10pt"> <div style="width: 100%; border-bottom: 1px solid #000000; font-size: 1px">  </div> </div> <div align="left" style="font-size: 10pt; margin-top: 12pt">     <b>UNSECURED NOTES</b> </div> <div align="left" style="font-size: 10pt; margin-top: 12pt">     Washington Gas issues unsecured Medium-Term Notes (MTNs) and private placement notes with individual terms regarding interest rates, maturities and call or put options. These notes can have maturity dates of one or more years from the date of issuance. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     On November 2, 2009, Washington Gas Light Company entered into a note purchase agreement by and among certain purchasers for the issuance and sale of $50.0 million of unsecured 4.76% fixed rate notes with a ten year maturity due November 1, 2019 through a private placement arrangement. The estimated effective cost of the notes, including consideration of issuance fees and hedge proceeds, is 4.79%. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     In the quarter ended June 30, 2010, Washington Gas retired $74.0 million of MTNs of which $50 million of these retirements relate to the redemption of 1.05% floating rate MTNs due August 26, 2010. These MTNs were repaid by the sale of commercial paper, cash provided by operating activities, or a combination of those sources of funds. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">     At June 30, 2010, Washington Gas had the capacity, under a shelf registration to issue up to $450.0 million of additional MTNs. At June 30, 2010 and September 30, 2009, outstanding notes were $615.0 million and $639.0 million, respectively. At June 30, 2010 and September 30, 2009, the weighted average interest rate on all outstanding notes was 6.04% and 5.82%, respectively. </div> </div>  <!-- Begin Block Tagged Note false false false us-types:textBlockItemType textblock This element may be used as a single block of text to encapsulate the entire disclosure for long-term borrowings including data and tables. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 false 1 2 false UnKnown UnKnown UnKnown false true