2.2.0.7 false Fair Value Measurements 0206 - Disclosure - Fair Value Measurements true false false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 EPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 Fair Value Measurements [Abstract] 0 wpz_FairValueMeasurementsAbstract wpz false na duration Fair Value Measurements. 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 Fair Value Measurements. false 3 Fair Value Measurements 1 us-gaap_FairValueMeasurementInputsDisclosureTextBlock 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 Note 6. Fair Value Measurements  Fair value is the amount received to sell an asset or the amount paid to transfer a liability in an orderly transaction between market participants (an exit price) at the measurement date. Fair value is a market-based measurement considered from the perspective of a market participant. We use market data or assumptions that we believe market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation. These inputs can be readily observable, market corroborated, or unobservable. We apply both market and income approaches for recurring fair value measurements using the best available information while utilizing valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. The fair value hierarchy prioritizes the inputs used to measure fair value, giving the highest priority to quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). We classify fair value balances based on the observability of those inputs. The three levels of the fair value hierarchy are as follows:  <ul><li>Level 1 — Quoted prices for identical assets or liabilities in active markets that we have the ability to access. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis. Our Level 1 measurements primarily consist of financial instruments that are exchange traded.</li></ul> <ul><li>Level 2 — Inputs are other than quoted prices in active markets included in Level 1, that are either directly or indirectly observable. These inputs are either directly observable in the marketplace or indirectly observable through corroboration with market data for substantially the full contractual term of the asset or liability being measured. The instruments included in our Level 2 measurements consist primarily of over-the-counter instruments such as natural gas forward contracts and swaps.</li></ul> <ul><li>Level 3 — Inputs that are not observable for which there is little, if any, market activity for the asset or liability being measured. These inputs reflect management's best estimate of the assumptions market participants would use in determining fair value. Our Level 3 measurements consist of instruments that are valued utilizing unobservable pricing inputs that are significant to the overall fair value.</li></ul> In valuing certain contracts, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. For disclosure purposes, assets and liabilities are classified in their entirety in the fair value hierarchy level based on the lowest level of input that is significant to the overall fair value measurement. Our assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the placement within the fair value hierarchy levels.The following table presents, by level within the fair value hierarchy, our assets and liabilities that are measured at fair value on a recurring basis.<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 105px; text-align:left;border-color:#000000;min-width:105px;"> </td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; text-align:left;border-color:#000000;min-width:40px;"> </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: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; text-align:left;border-color:#000000;min-width:40px;"> </td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 105px; text-align:left;border-color:#000000;min-width:105px;"> </td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; text-align:left;border-color:#000000;min-width:40px;"> </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: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; text-align:left;border-color:#000000;min-width:40px;"> </td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 105px; text-align:left;border-color:#000000;min-width:105px;"> </td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="10" style="width: 220px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:220px;">September 30, 2010</td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="10" style="width: 220px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:220px;">December 31, 2009</td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 105px; text-align:left;border-color:#000000;min-width:105px;"> </td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:45px;">Level 1 </td><td style="width: 5px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:45px;">Level 2 </td><td style="width: 5px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:45px;">Level 3 </td><td style="width: 5px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:40px;">Total </td><td colspan="2" style="width: 20px; text-align:center;border-color:#000000;min-width:20px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:45px;">Level 1 </td><td style="width: 5px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:45px;">Level 2 </td><td style="width: 5px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:45px;">Level 3 </td><td style="width: 5px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:40px;">Total </td></tr><tr style="height: 2px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 105px; text-align:left;border-color:#000000;min-width:105px;"> </td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:center;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:center;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:center;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:40px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:center;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:center;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:center;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:40px;"> </td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 105px; text-align:left;border-color:#000000;min-width:105px;"> </td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="10" style="width: 220px; text-align:center;border-color:#000000;min-width:220px;">(Millions)</td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="10" style="width: 220px; text-align:center;border-color:#000000;min-width:220px;">(Millions)</td></tr><tr style="height: 17px"><td colspan="4" style="width: 150px; text-align:left;border-color:#000000;min-width:150px;">Assets:</td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; text-align:left;border-color:#000000;min-width:40px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; text-align:left;border-color:#000000;min-width:40px;"> </td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td colspan="3" style="width: 135px; text-align:left;border-color:#000000;min-width:135px;">ARO Trust Investments </td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; text-align:left;border-color:#000000;min-width:40px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; text-align:left;border-color:#000000;min-width:40px;"> </td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td colspan="2" style="width: 120px; text-align:left;border-color:#000000;min-width:120px;">(see Note 7)</td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">37</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 40px; text-align:right;border-color:#000000;min-width:40px;">37</td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">22</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 40px; text-align:right;border-color:#000000;min-width:40px;">22</td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td colspan="3" style="width: 135px; text-align:left;border-color:#000000;min-width:135px;">Energy derivatives</td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">1</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">1</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:40px;">2</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:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">2</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:40px;">2</td></tr><tr style="height: 18px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td colspan="2" style="width: 120px; text-align:left;border-color:#000000;min-width:120px;">Total assets</td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:45px;">37</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:45px;"> 1</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:45px;">1</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 40px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:40px;">39</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:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:45px;">22</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:45px;">2</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 40px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:40px;">24</td></tr><tr style="height: 18px"><td colspan="4" style="width: 150px; text-align:left;border-color:#000000;min-width:150px;">Liabilities:</td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:40px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:40px;"> </td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td colspan="3" style="width: 135px; text-align:left;border-color:#000000;min-width:135px;">Energy derivatives</td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">6</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;"> 2</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 40px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:40px;">8</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:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:45px;">2</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 40px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:40px;">2</td></tr><tr style="height: 18px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td colspan="2" style="width: 120px; text-align:left;border-color:#000000;min-width:120px;">Total liabilities</td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:45px;"> -</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:45px;">6</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:45px;"> 2</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 40px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:40px;">8</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:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:45px;">-</td><td style="width: 5px; text-align:right;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 45px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:45px;">2</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:10px;">$</td><td style="width: 40px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:40px;">2</td></tr><tr style="height: 18px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 105px; text-align:left;border-color:#000000;min-width:105px;"> </td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:40px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:40px;"> </td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 105px; text-align:left;border-color:#000000;min-width:105px;"> </td><td style="width: 4px; text-align:left;border-color:#000000;min-width:4px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; text-align:left;border-color:#000000;min-width:40px;"> </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: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 45px; text-align:left;border-color:#000000;min-width:45px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 40px; text-align:left;border-color:#000000;min-width:40px;"> </td></tr></table></div>Many contracts have bid and ask prices that can be observed in the market. Our policy is to use a mid-market pricing (the mid-point price between bid and ask prices) convention to value individual positions and then adjust on a portfolio level to a point within the bid and ask range that represents our best estimate of fair value. For offsetting positions by location, the mid-market price is used to measure both the long and short positions. The determination of fair value for our assets and liabilities also incorporates the time value of money and various credit risk factors which can include the credit standing of the counterparties involved, master netting arrangements, the impact of credit enhancements (such as cash collateral posted and letters of credit), and our nonperformance risk on our liabilities. The determination of the fair value of our liabilities does not consider noncash collateral credit enhancements. Forward and swap contracts included in Level 2 are valued using an income approach including present value techniques. Significant inputs into our Level 2 valuations include commodity prices and interest rates, as well as considering executed transactions or broker quotes corroborated by other market data. These broker quotes are based on observable market prices at which transactions could currently be executed. In certain instances where these inputs are not observable for all periods, relationships of observable market data and historical observations are used as a means to estimate fair value. Where observable inputs are available for substantially the full term of the asset or liability, the instrument is categorized in Level 2. The tenure of our derivatives portfolio is relatively short with all of our derivatives expiring by December 31, 2010. Due to the nature of the products and tenure, we are consistently able to obtain market pricing. All pricing is reviewed on a daily basis and is formally validated with broker quotes and documented on a monthly basis.  Certain instruments trade in less active markets with lower availability of pricing information. These instruments are valued with a present value technique using inputs that may not be readily observable or corroborated by other market data. These instruments are classified within Level 3 when these inputs have a significant impact on the measurement of fair value. Certain inputs into the model are generally observable, such as interest rates, whereas natural gas liquids commodity prices are considered unobservable. The instruments included in Level 3 consist primarily of natural gas liquids swaps and forward contracts. Reclassifications of fair value between Level 1, Level 2 and Level 3 of the fair value hierarchy, if applicable, are made at the end of each quarter. No significant transfers between Level 1 and Level 2 occurred during the period ended September 30, 2010. The following tables present a reconciliation of changes in the fair value of our net energy derivatives classified as Level 3 in the fair value hierarchy.<div style="text-align:center;">Level 3 Fair Value Measurements Using Significant Unobservable Inputs</div><div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 285px; text-align:left;border-color:#000000;min-width:285px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 285px; text-align:left;border-color:#000000;min-width:285px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 14px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 285px; text-align:left;border-color:#000000;min-width:285px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td colspan="5" style="width: 135px; text-align:center;border-color:#000000;min-width:135px;">Net Energy Derivatives</td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td colspan="5" style="width: 135px; text-align:center;border-color:#000000;min-width:135px;">Net Energy Derivatives</td></tr><tr style="height: 13px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 285px; text-align:left;border-color:#000000;min-width:285px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td colspan="5" style="width: 135px; text-align:center;border-color:#000000;min-width:135px;">Three months ended</td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td colspan="5" style="width: 135px; text-align:center;border-color:#000000;min-width:135px;">Nine months ended</td></tr><tr style="height: 12px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 285px; text-align:left;border-color:#000000;min-width:285px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td colspan="5" style="width: 135px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:135px;">September 30,</td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td colspan="5" style="width: 135px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:135px;">September 30,</td></tr><tr style="height: 13px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 285px; text-align:left;border-color:#000000;min-width:285px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:60px;">2010</td><td style="width: 15px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:15px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:60px;">2009</td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:60px;">2010</td><td style="width: 15px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:15px;"> </td><td colspan="2" style="width: 60px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:60px;">2009</td></tr><tr style="height: 3px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 285px; text-align:left;border-color:#000000;min-width:285px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 14px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 285px; text-align:left;border-color:#000000;min-width:285px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="4" style="width: 125px; text-align:center;border-color:#000000;min-width:125px;">(Millions)</td><td style="width: 15px; text-align:center;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;"> </td><td colspan="4" style="width: 125px; text-align:center;border-color:#000000;min-width:125px;">(Millions)</td></tr><tr style="height: 34px"><td colspan="4" style="width: 330px; text-align:left;border-color:#000000;min-width:330px;">Beginning balance</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 20</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 5</td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> -</td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:center;border-color:#000000;min-width:10px;">$</td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 1</td></tr><tr style="height: 17px"><td colspan="4" style="width: 330px; text-align:left;border-color:#000000;min-width:330px;">Realized and unrealized gains (losses):</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td colspan="3" style="width: 315px; text-align:left;border-color:#000000;min-width:315px;">Included in net income</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 8</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> -</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 10</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 4</td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td colspan="3" style="width: 315px; text-align:left;border-color:#000000;min-width:315px;">Included in other comprehensive income (loss)</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> (20)</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> -</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> 1</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> -</td></tr><tr style="height: 17px"><td colspan="4" style="width: 330px; text-align:left;border-color:#000000;min-width:330px;">Purchases, issuances, and settlements</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> (9)</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> (2)</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> (12)</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> (2)</td></tr><tr style="height: 17px"><td colspan="4" style="width: 330px; text-align:left;border-color:#000000;min-width:330px;">Transfers into Level 3</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> -</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> -</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> -</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:right;border-color:#000000;min-width:50px;"> -</td></tr><tr style="height: 17px"><td colspan="4" style="width: 330px; text-align:left;border-color:#000000;min-width:330px;">Transfers out of Level 3</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </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: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:50px;"> -</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </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: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:50px;"> -</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:50px;"> -</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:50px;"> -</td></tr><tr style="height: 16px"><td colspan="4" style="width: 330px; text-align:left;border-color:#000000;min-width:330px;">Ending balance</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:center;border-color:#000000;min-width:10px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:50px;"> (1)</td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:center;border-color:#000000;min-width:10px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:50px;"> 3</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:center;border-color:#000000;min-width:10px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:50px;"> (1)</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:center;border-color:#000000;min-width:10px;">$</td><td style="width: 50px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:50px;"> 3</td></tr><tr style="height: 12px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 285px; text-align:left;border-color:#000000;min-width:285px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 16px"><td colspan="4" style="width: 330px; text-align:left;border-color:#000000;min-width:330px;">Unrealized gains (losses) included in net income relating to</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 16px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td colspan="3" style="width: 315px; text-align:left;border-color:#000000;min-width:315px;">instruments still held at September 30</td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-bottom-style:double;border-bottom-width:3px;text-align:center;border-color:#000000;min-width:10px;">$</td><td style="width: 50px; border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:50px;"> -</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-bottom-style:double;border-bottom-width:3px;text-align:center;border-color:#000000;min-width:10px;">$</td><td style="width: 50px; border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:50px;"> -</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-bottom-style:double;border-bottom-width:3px;text-align:center;border-color:#000000;min-width:10px;">$</td><td style="width: 50px; border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:50px;"> -</td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-bottom-style:double;border-bottom-width:3px;text-align:center;border-color:#000000;min-width:10px;">$</td><td style="width: 50px; border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:50px;"> 3</td></tr><tr style="height: 18px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 285px; text-align:left;border-color:#000000;min-width:285px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:right;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:50px;"> </td></tr><tr style="height: 17px"><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 285px; text-align:left;border-color:#000000;min-width:285px;"> </td><td style="width: 5px; text-align:left;border-color:#000000;min-width:5px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 50px; text-align:left;border-color:#000000;min-width:50px;"> </td></tr></table></div>Realized and unrealized gains (losses) included in net income for the above periods are reported in revenues in our Consolidated Statement of Income. For the periods ended September 30, 2010 and 2009, there were no assets or liabilities measured at fair value on a nonrecurring basis. Note 6. Fair Value Measurements  Fair value is the amount received to sell an asset or the amount paid to transfer a liability in an orderly transaction false false false us-types:textBlockItemType textblock This element represents the disclosure related to the fair value measurement of assets and liabilities which includes [financial] instruments measured at fair value that are classified in stockholders' equity. Such assets and liabilities may be measured on a recurring or nonrecurring basis. The disclosures which may be required or desired include: (1) for assets and liabilities measured on a recurring basis, disclosure may include: (a) the fair value measurements at the reporting date; (b) the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3); (c) for fair value measurements using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (i) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (ii) purchases, sales, issuances, and settlements (net); (iii) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs); (d) the amount of the total gains or losses for the period in subparagraph (c) (i) above included in earnings (or changes in net assets) that are attributable to the change in unrealized gains or losses relating to those assets and liabilities still held at the reporting date and a description of where those unrealized gains or losses are reported in the statement of income (or activities); (e) the valuation technique(s) used to measure fair value and a discussion of changes in valuation techniques, if any, during the period and (2) for assets and liabilities that are measured at fair value on a nonrecurring basis (for example, impaired assets) disclosure may include, in addition to (a) above: (a) the reasons for the fair value measurements recorded; (b) the same as (b) above; (c) for fair value measurements using significant unobservable inputs (Level 3), a description of the inputs and the information used to develop the inputs; and (d) the valuation technique(s) used to measure fair value and a discussion of changes, if any, in the valuation technique(s) used to measure similar assets and/or liabilities in prior periods. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 33 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 6 -Footnote 4 false 1 2 false UnKnown UnKnown UnKnown false true