2.2.0.25falsefalse11100 - Disclosure - Property, Plant and Equipmenttruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011
USD ($)
USD ($) / shares
$FROM_Jan01_2011_TO_Mar31_2011http://www.sec.gov/CIK0000073020duration2011-01-01T00:00:002011-03-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDpershareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0nwn_PropertyPlantAndEquipmentnwnfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse| 1falsefalsefalse00falsefalsefalsefalsefalse | Otherxbrli:stringItemTypestringNo definition available.falsefalse
3false0us-gaap_PropertyPlantAndEquipmentDisclosureTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse| 1falsefalsefalse00<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:11pt;font-weight:bold;margin-left:0px;">11</font><font style="font-family:Times New Roman;font-size:11pt;font-weight:bold;">.</font><font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;">       </font><font style="font-family:Times New Roman;font-size:11pt;font-weight:bold;text-decoration:underline;">Property</font><font style="font-family:Times New Roman;font-size:11pt;font-weight:bold;text-decoration:underline;">, Plant and Equipment</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:11pt;margin-left:36px;">The following table sets forth the major classifications of our </font><font style="font-family:Times New Roman;font-size:11pt;">property,</font><font style="font-family:Times New Roman;font-size:11pt;"> plant </font><font style="font-family:Times New Roman;font-size:11pt;">and equipment </font><font style="font-family:Times New Roman;font-size:11pt;">and accumulated depreciation as of March 31, 2011 and 2010 and </font><font style="font-family:Times New Roman;font-size:11pt;">December 31</font><font style="font-family:Times New Roman;font-size:11pt;">, 2010</font><font style="font-family:Times New Roman;font-size:11pt;">:</font></p><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 20px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 340px; text-align:left;border-color:#000000;min-width:340px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="5" style="width: 230px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:230px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">March 31,</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 110px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:110px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">December 31,</font></td></tr><tr style="height: 20px"><td colspan="2" style="width: 360px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:360px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Thousands</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:110px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">2011</font></td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:110px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">2010</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 110px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:110px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: center;">2010</font></td></tr><tr style="height: 20px"><td colspan="2" style="width: 360px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:360px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: left;">Utility plant in service</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 2,264,055</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 2,206,571</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 2,247,952</font></td></tr><tr style="height: 20px"><td colspan="2" style="width: 360px; text-align:left;border-color:#000000;min-width:360px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Utility construction work in progress</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 28,464</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 25,736</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 29,324</font></td></tr><tr style="height: 20px"><td colspan="2" style="width: 360px; text-align:left;border-color:#000000;min-width:360px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Less: Accumulated depreciation</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 720,134</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 691,420</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 710,214</font></td></tr><tr style="height: 20px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 340px; text-align:left;border-color:#000000;min-width:340px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Utility plant-net</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 1,572,385</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 1,540,887</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 1,567,062</font></td></tr><tr style="height: 20px"><td colspan="2" style="width: 360px; text-align:left;border-color:#000000;min-width:360px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Non-utility plant in service</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 292,089</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 66,084</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 290,038</font></td></tr><tr style="height: 20px"><td colspan="2" style="width: 360px; text-align:left;border-color:#000000;min-width:360px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Non-utility construction work in progress</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 8,945</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 111,143</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 9,088</font></td></tr><tr style="height: 20px"><td colspan="2" style="width: 360px; text-align:left;border-color:#000000;min-width:360px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Less: Accumulated depreciation</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 13,505</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 10,887</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 12,025</font></td></tr><tr style="height: 20px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 340px; text-align:left;border-color:#000000;min-width:340px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">Non-utility plant-net</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 287,529</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 166,340</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 100px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 287,101</font></td></tr><tr style="height: 20px"><td style="width: 20px; text-align:left;border-color:#000000;min-width:20px;"> </td><td style="width: 340px; text-align:left;border-color:#000000;min-width:340px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:100px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:100px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 100px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:100px;"> </td></tr><tr style="height: 21px"><td colspan="2" style="width: 360px; text-align:left;border-color:#000000;min-width:360px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: left;">Total property, plant and equipment</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 100px; border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 1,859,914</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 100px; border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 1,707,227</font></td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-bottom-style:double;border-bottom-width:3px;text-align:left;border-color:#000000;min-width:10px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;">$</font></td><td style="width: 100px; border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:100px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 11pt;COLOR: #000000;TEXT-ALIGN: right;"> 1,854,163</font></td></tr></table></div>11.       Property, Plant and Equipment The following table sets forth the major classifications of our property, plantfalsefalsefalsefalsefalse | Otherus-types:textBlockItemTypestringDisclosure of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, building and production equipment. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures. This element may be used as a single block of text to include the entire PPE disclosure, including data and tables.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 5
falsefalse
12Property, Plant and EquipmentUnKnownUnKnownUnKnownUnKnownfalsetrue