Fair Value Measurements

6 Months Ended

Jun. 30, 2014

Fair Value Measurements

Note M — Fair Value Measurements

The accounting rules for fair value measurements and disclosures define fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date in a principal or most advantageous market. Fair value is a market-based measurement that is determined based on inputs, which refer broadly to assumptions that market participants use in pricing assets or liabilities. These inputs can be readily observable, market corroborated, or generally unobservable firm inputs. The Companies often make certain assumptions that market participants would use in pricing the asset or liability, including assumptions about risk, and the risks inherent in the inputs to valuation techniques. The Companies use valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs.

The accounting rules for fair value measurements and disclosures established a fair value hierarchy, which prioritizes the inputs to valuation techniques used to measure fair value in three broad levels. The rules require that assets and liabilities be classified in their entirety based on the level of input that is significant to the fair value measurement. Assessing the significance of a particular input may require judgment considering factors specific to the asset or liability, and may affect the valuation of the asset or liability and their placement within the fair value hierarchy. The Companies classify fair value balances based on the fair value hierarchy defined by the accounting rules for fair value measurements and disclosures as follows:

• Level 1 – Consists of assets or liabilities whose value is based on unadjusted quoted prices in active markets at the measurement date. An active market is one in which transactions for assets or liabilities occur with sufficient frequency and volume to provide pricing information on an ongoing basis. This category includes contracts traded on active exchange markets valued using unadjusted prices quoted directly from the exchange.

• Level 2 – Consists of assets or liabilities valued using industry standard models and based on prices, other than quoted prices within Level 1, that are either directly or indirectly observable as of the measurement date. The industry standard models consider observable assumptions including time value, volatility factors, and current market and contractual prices for the underlying commodities, in addition to other economic measures. This category includes contracts traded on active exchanges or in over-the-counter markets priced with industry standard models.

• Level 3 – Consists of assets or liabilities whose fair value is estimated based on internally developed models or methodologies using inputs that are generally less readily observable and supported by little, if any, market activity at the measurement date. Unobservable inputs are developed based on the best available information and subject to cost benefit constraints. This category includes contracts priced using models that are internally developed and contracts placed in illiquid markets. It also includes contracts that expire after the period of time for which quoted prices are available and internal models are used to determine a significant portion of the value.

Assets and liabilities measured at fair value on a recurring basis as of June 30, 2014 are summarized below.

	Level 1				Level 2				Level 3				Netting Adjustments (d)						Total
(Millions of Dollars)	Con Edison		CECONY		Con Edison		CECONY		Con Edison		CECONY		Con Edison			CECONY			Con Edison		CECONY
Derivative assets:
Commodity (a)(e)(f)	$	7	$	5	$	166	$	43	$	28	$	14	$	(84	)	$	(11	)	$	117	$	51
Other assets (c)(e)(f)		160		153		116		105		—		—		—			—			276		258
Total	$	167	$	158	$	282	$	148	$	28	$	14	$	(84	)	$	(11	)	$	393	$	309
Derivative liabilities:
Commodity (a)(e)(f)	$	5	$	3	$	63	$	13	$	1	$	—	$	(59)		$	(10)		$	10	$	6
Interest rate contract (b)(e)(f)		—		—		1		—		—		—		—			—			1		—
Total	$	5	$	3	$	64	$	13	$	1	$	—	$	(59)		$	(10)		$	11	$	6

(a) A portion of the commodity derivatives categorized in Level 3 is valued using an internally developed model with observable inputs. The models also include some less readily observable inputs resulting in the classification of the entire contract as Level 3. See Note L.

(b) See Note L.

(c) Other assets are comprised of assets such as life insurance contracts within the deferred compensation plan and non-qualified retirement plans.

(d) Amounts represent the impact of legally-enforceable master netting agreements that allow the Companies to net gain and loss positions and cash collateral held or placed with the same counterparties.

(e) The Companies’ policy is to recognize transfers into and transfers out of the levels at the end of the reporting period. There were no transfers between levels 1, 2, and 3 for the six months ended June 30, 2014.

(f) Level 2 assets and liabilities include investments held in the deferred compensation plan and/or non-qualified retirement plans, interest rate swap, or exchange-traded contracts where there is insufficient market liquidity to warrant inclusion in Level 1, and certain over-the-counter derivative instruments for electricity and natural gas. Derivative instruments classified as Level 2 are valued using industry standard models that incorporate corroborated observable inputs; such as pricing services or prices from similar instruments that trade in liquid markets, time value, and volatility factors.

Assets and liabilities measured at fair value on a recurring basis as of December 31, 2013 are summarized below.

	Level 1				Level 2				Level 3				Netting Adjustments (d)				Total
(Millions of Dollars)	Con Edison		CECONY		Con Edison		CECONY		Con Edison		CECONY		Con Edison		CECONY		Con Edison		CECONY
Derivative assets:
Commodity (a)(e)(f)	$	3	$	3	$	130	$	13	$	11	$	6		$(62)		$3	$	82	$	25
Other assets (c)(e)(f)		141		134		113		103		—		—		—		—		254		237
Total	$	144	$	137	$	243	$	116	$	11	$	6		$(62)		$3	$	336	$	262
Derivative liabilities:
Commodity (a)(e)(f)	$	5	$	5	$	84	$	27	$	2	$	—		$(76)		$(18)	$	15	$	14
Interest rate contract (b)(e)(f)		—		—		2		—		—		—		—		—		2		—
Total	$	5	$	5	$	86	$	27	$	2	$	—		$(76)		$(18)	$	17	$	14

(a) A portion of the commodity derivatives categorized in Level 3 is valued using an internally developed model with observable inputs. The models also include some less readily observable inputs resulting in the classification of the entire contract as Level 3. See Note L.

(b) See Note L.

(c) Other assets are comprised of assets such as life insurance contracts within the deferred compensation plan and non-qualified retirement plans.

(d) Amounts represent the impact of legally-enforceable master netting agreements that allow the Companies to net gain and loss positions and cash collateral held or placed with the same counterparties.

(e) The Companies’ policy is to recognize transfers into and transfers out of the levels at the end of the reporting period. There were no transfers between levels 1, 2, and 3 for the year ended December 31, 2013.

(f) Level 2 assets and liabilities include investments held in the deferred compensation plan and/or non-qualified retirement plans, interest rate swap, or exchange-traded contracts where there is insufficient market liquidity to warrant inclusion in Level 1, and certain over-the-counter derivative instruments for electricity and natural gas. Derivative instruments classified as Level 2 are valued using industry standard models that incorporate corroborated observable inputs; such as pricing services or prices from similar instruments that trade in liquid markets, time value, and volatility factors.

The employees in the risk management groups of the Utilities and the competitive energy businesses develop and maintain the Companies’ valuation policies and procedures for, and verify pricing and fair value valuation of, commodity derivatives. Under the Companies’ policies and procedures, multiple independent sources of information are obtained for forward price curves used to value commodity derivatives. Fair value and changes in fair value of commodity derivatives are reported on a monthly basis to the Companies’ risk committees, comprised of officers and employees of the Companies that oversee energy hedging at the Utilities and the competitive energy businesses. The managers of the risk management groups report to the Companies’ Vice President and Treasurer.

	Fair Value of Level 3 at June 30, 2014 (Millions of Dollars)		Valuation Techniques	Unobservable Inputs	Range
Con Edison—Commodity
Electricity		$10	Discounted Cash Flow	Forward energy prices (a)	$28.93-$150.25 per MWH
			Discounted Cash Flow	Forward capacity prices (a)	$5.25-$18.69 per kW-month
Transmission Congestion Contracts / Financial Transmission Rights		17	Discounted Cash Flow	Discount to adjust auction prices for inter-zonal forward price curves (b)	(5.8)%-50.6%
				Discount to adjust auction prices for historical monthly realized settlements (b)	6.1%-49.1%
				Inter-zonal forward price curves adjusted for historical zonal losses (b)	$0.32-$11.24 per MWh
Total Con Edison—Commodity		$27
CECONY—Commodity
Transmission Congestion Contracts		$14	Discounted Cash Flow	Discount to adjust auction prices for inter-zonal forward price curves (b)	(5.8)%-50.6%
				Discount to adjust auction prices for historical monthly realized settlements (b)	6.1%-49.1%

(a) Generally, increases/(decreases) in this input in isolation would result in a higher/(lower) fair value measurement.

(b) Generally, increases/(decreases) in this input in isolation would result in a lower/(higher) fair value measurement.

The table listed below provides a reconciliation of the beginning and ending net balances for assets and liabilities measured at fair value as of June 30, 2014 and 2013 and classified as Level 3 in the fair value hierarchy:

	For the Three Months Ended June 30, 2014
			Total Gains/(Losses)— Realized and Unrealized
(Millions of Dollars)	Beginning Balance as of April 1, 2014		Included in Earnings		Included in Regulatory Assets and Liabilities		Purchases		Issuances		Sales		Settlements		Transfer In/Out of Level 3		Ending Balance as of June 30, 2014
Con Edison
Derivatives:
Commodity		$24		$(2)		$3		$3		$—		$—		$(1)		$—		$27
CECONY
Derivatives:
Commodity		$13		$(2)		$3		$2		$—		$—		$(2)		$—		$14
	For the Six Months Ended June 30, 2014
			Total Gains/(Losses)— Realized and Unrealized
(Millions of Dollars)	Beginning Balance as of January 1, 2014		Included in Earnings		Included in Regulatory Assets and Liabilities		Purchases		Issuances		Sales		Settlements		Transfer In/Out of Level 3		Ending Balance as of June 30, 2014
Con Edison
Derivatives:
Commodity		$9		$49		$7		$11		$—		$—		$(49)		$—		$27
CECONY
Derivatives:
Commodity		$6		$9		$7		$9		$—		$—		$(17)		$—		$14

	For Three Months Ended June 30, 2013
			Total Gains/(Losses)— Realized and Unrealized
(Millions of Dollars)	Beginning Balance as of April 1, 2013		Included in Earnings			Included in Regulatory Assets and Liabilities			Purchases		Issuances		Sales		Settlements		Transfer In/Out of Level 3		Ending Balance as of June 30, 2013
Con Edison
Derivatives:
Commodity	$	14	$	(21	)	$	(2	)	$	2	$	—	$	—	$	1	$	—	$	(6)
CECONY
Derivatives:
Commodity	$	11	$	(2	)	$	—		$	1	$	—	$	—	$	(2)	$	—	$	8
	For Six Months Ended June 30, 2013
			Total Gains/(Losses)— Realized and Unrealized
(Millions of Dollars)	Beginning Balance as of January 1, 2013		Included in Earnings			Included in Regulatory Assets and Liabilities			Purchases		Issuances		Sales		Settlements		Transfer In/Out of Level 3		Ending Balance as of June 30, 2013
Con Edison
Derivatives:
Commodity	$	(5)	$	8		$	3		$	7	$	—	$	—	$	(19)	$	—	$	(6)
CECONY
Derivatives:
Commodity	$	10	$	7		$	1		$	5	$	—	$	—	$	(15)	$	—	$	8

For the Utilities, realized gains and losses on Level 3 commodity derivative assets and liabilities are reported as part of purchased power, gas and fuel costs. The Utilities generally recover these costs in accordance with rate provisions approved by the applicable state public utilities commissions. Unrealized gains and losses for commodity derivatives are generally deferred on the consolidated balance sheet in accordance with the accounting rules for regulated operations.

For the competitive energy businesses, realized and unrealized gains and losses on Level 3 commodity derivative assets and liabilities are reported in non-utility revenues (immaterial and $2 million loss) and purchased power costs (immaterial and $15 million loss) on the consolidated income statement for the three months ended June 30, 2014 and 2013, respectively. Realized and unrealized gains and losses on Level 3 commodity derivative assets and liabilities are reported in non-utility revenues (immaterial and $2 million loss) and purchased power costs ($40 million gain and $4 million gain) on the consolidated income statement for the six months ended June 30, 2014 and 2013, respectively. The change in fair value relating to Level 3 commodity derivative assets and liabilities held at June 30, 2014 and 2013 is included in non-utility revenues (immaterial and $2 million loss) and purchased power costs ($2 million gain and $14 million loss) on the consolidated income statement for the three months ended June 30, 2014 and 2013, respectively. For the six months ended June 30, 2014 and 2013, the change in fair value relating to Level 3 commodity derivative assets and liabilities is included in non-utility revenues (immaterial and $2 million loss) and purchased power costs ($11 million gain and $2 million gain) on the consolidated income statement, respectively.

The accounting rules for fair value measurements and disclosures require consideration of the impact of nonperformance risk (including credit risk) from a market participant perspective in the measurement of the fair value of assets and liabilities. At June 30, 2014, the Companies determined that nonperformance risk would have no material impact on their financial position or results of operations. To assess nonperformance risk, the Companies considered information such as collateral requirements, master netting arrangements, letters of credit and parent company guarantees, and applied a historical default probability based on current credit ratings and a market-based method by using the counterparty (for an asset) or the Companies’ (for a liability) credit default swaps rates.

CECONY [Member]

Fair Value Measurements

Note M — Fair Value Measurements

The accounting rules for fair value measurements and disclosures define fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date in a principal or most advantageous market. Fair value is a market-based measurement that is determined based on inputs, which refer broadly to assumptions that market participants use in pricing assets or liabilities. These inputs can be readily observable, market corroborated, or generally unobservable firm inputs. The Companies often make certain assumptions that market participants would use in pricing the asset or liability, including assumptions about risk, and the risks inherent in the inputs to valuation techniques. The Companies use valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs.

The accounting rules for fair value measurements and disclosures established a fair value hierarchy, which prioritizes the inputs to valuation techniques used to measure fair value in three broad levels. The rules require that assets and liabilities be classified in their entirety based on the level of input that is significant to the fair value measurement. Assessing the significance of a particular input may require judgment considering factors specific to the asset or liability, and may affect the valuation of the asset or liability and their placement within the fair value hierarchy. The Companies classify fair value balances based on the fair value hierarchy defined by the accounting rules for fair value measurements and disclosures as follows:

• Level 1 – Consists of assets or liabilities whose value is based on unadjusted quoted prices in active markets at the measurement date. An active market is one in which transactions for assets or liabilities occur with sufficient frequency and volume to provide pricing information on an ongoing basis. This category includes contracts traded on active exchange markets valued using unadjusted prices quoted directly from the exchange.

• Level 2 – Consists of assets or liabilities valued using industry standard models and based on prices, other than quoted prices within Level 1, that are either directly or indirectly observable as of the measurement date. The industry standard models consider observable assumptions including time value, volatility factors, and current market and contractual prices for the underlying commodities, in addition to other economic measures. This category includes contracts traded on active exchanges or in over-the-counter markets priced with industry standard models.

• Level 3 – Consists of assets or liabilities whose fair value is estimated based on internally developed models or methodologies using inputs that are generally less readily observable and supported by little, if any, market activity at the measurement date. Unobservable inputs are developed based on the best available information and subject to cost benefit constraints. This category includes contracts priced using models that are internally developed and contracts placed in illiquid markets. It also includes contracts that expire after the period of time for which quoted prices are available and internal models are used to determine a significant portion of the value.

Assets and liabilities measured at fair value on a recurring basis as of June 30, 2014 are summarized below.

	Level 1				Level 2				Level 3				Netting Adjustments (d)						Total
(Millions of Dollars)	Con Edison		CECONY		Con Edison		CECONY		Con Edison		CECONY		Con Edison			CECONY			Con Edison		CECONY
Derivative assets:
Commodity (a)(e)(f)	$	7	$	5	$	166	$	43	$	28	$	14	$	(84	)	$	(11	)	$	117	$	51
Other assets (c)(e)(f)		160		153		116		105		—		—		—			—			276		258
Total	$	167	$	158	$	282	$	148	$	28	$	14	$	(84	)	$	(11	)	$	393	$	309
Derivative liabilities:
Commodity (a)(e)(f)	$	5	$	3	$	63	$	13	$	1	$	—	$	(59)		$	(10)		$	10	$	6
Interest rate contract (b)(e)(f)		—		—		1		—		—		—		—			—			1		—
Total	$	5	$	3	$	64	$	13	$	1	$	—	$	(59)		$	(10)		$	11	$	6

(a) A portion of the commodity derivatives categorized in Level 3 is valued using an internally developed model with observable inputs. The models also include some less readily observable inputs resulting in the classification of the entire contract as Level 3. See Note L.

(b) See Note L.

(c) Other assets are comprised of assets such as life insurance contracts within the deferred compensation plan and non-qualified retirement plans.

(d) Amounts represent the impact of legally-enforceable master netting agreements that allow the Companies to net gain and loss positions and cash collateral held or placed with the same counterparties.

(e) The Companies’ policy is to recognize transfers into and transfers out of the levels at the end of the reporting period. There were no transfers between levels 1, 2, and 3 for the six months ended June 30, 2014.

(f) Level 2 assets and liabilities include investments held in the deferred compensation plan and/or non-qualified retirement plans, interest rate swap, or exchange-traded contracts where there is insufficient market liquidity to warrant inclusion in Level 1, and certain over-the-counter derivative instruments for electricity and natural gas. Derivative instruments classified as Level 2 are valued using industry standard models that incorporate corroborated observable inputs; such as pricing services or prices from similar instruments that trade in liquid markets, time value, and volatility factors.

Assets and liabilities measured at fair value on a recurring basis as of December 31, 2013 are summarized below.

	Level 1				Level 2				Level 3				Netting Adjustments (d)				Total
(Millions of Dollars)	Con Edison		CECONY		Con Edison		CECONY		Con Edison		CECONY		Con Edison		CECONY		Con Edison		CECONY
Derivative assets:
Commodity (a)(e)(f)	$	3	$	3	$	130	$	13	$	11	$	6		$(62)		$3	$	82	$	25
Other assets (c)(e)(f)		141		134		113		103		—		—		—		—		254		237
Total	$	144	$	137	$	243	$	116	$	11	$	6		$(62)		$3	$	336	$	262
Derivative liabilities:
Commodity (a)(e)(f)	$	5	$	5	$	84	$	27	$	2	$	—		$(76)		$(18)	$	15	$	14
Interest rate contract (b)(e)(f)		—		—		2		—		—		—		—		—		2		—
Total	$	5	$	5	$	86	$	27	$	2	$	—		$(76)		$(18)	$	17	$	14

(a) A portion of the commodity derivatives categorized in Level 3 is valued using an internally developed model with observable inputs. The models also include some less readily observable inputs resulting in the classification of the entire contract as Level 3. See Note L.

(b) See Note L.

(c) Other assets are comprised of assets such as life insurance contracts within the deferred compensation plan and non-qualified retirement plans.

(d) Amounts represent the impact of legally-enforceable master netting agreements that allow the Companies to net gain and loss positions and cash collateral held or placed with the same counterparties.

(e) The Companies’ policy is to recognize transfers into and transfers out of the levels at the end of the reporting period. There were no transfers between levels 1, 2, and 3 for the year ended December 31, 2013.

(f) Level 2 assets and liabilities include investments held in the deferred compensation plan and/or non-qualified retirement plans, interest rate swap, or exchange-traded contracts where there is insufficient market liquidity to warrant inclusion in Level 1, and certain over-the-counter derivative instruments for electricity and natural gas. Derivative instruments classified as Level 2 are valued using industry standard models that incorporate corroborated observable inputs; such as pricing services or prices from similar instruments that trade in liquid markets, time value, and volatility factors.

The employees in the risk management groups of the Utilities and the competitive energy businesses develop and maintain the Companies’ valuation policies and procedures for, and verify pricing and fair value valuation of, commodity derivatives. Under the Companies’ policies and procedures, multiple independent sources of information are obtained for forward price curves used to value commodity derivatives. Fair value and changes in fair value of commodity derivatives are reported on a monthly basis to the Companies’ risk committees, comprised of officers and employees of the Companies that oversee energy hedging at the Utilities and the competitive energy businesses. The managers of the risk management groups report to the Companies’ Vice President and Treasurer.

	Fair Value of Level 3 at June 30, 2014 (Millions of Dollars)		Valuation Techniques	Unobservable Inputs	Range
Con Edison—Commodity
Electricity		$10	Discounted Cash Flow	Forward energy prices (a)	$28.93-$150.25 per MWH
			Discounted Cash Flow	Forward capacity prices (a)	$5.25-$18.69 per kW-month
Transmission Congestion Contracts / Financial Transmission Rights		17	Discounted Cash Flow	Discount to adjust auction prices for inter-zonal forward price curves (b)	(5.8)%-50.6%
				Discount to adjust auction prices for historical monthly realized settlements (b)	6.1%-49.1%
				Inter-zonal forward price curves adjusted for historical zonal losses (b)	$0.32-$11.24 per MWh
Total Con Edison—Commodity		$27
CECONY—Commodity
Transmission Congestion Contracts		$14	Discounted Cash Flow	Discount to adjust auction prices for inter-zonal forward price curves (b)	(5.8)%-50.6%
				Discount to adjust auction prices for historical monthly realized settlements (b)	6.1%-49.1%

(a) Generally, increases/(decreases) in this input in isolation would result in a higher/(lower) fair value measurement.

(b) Generally, increases/(decreases) in this input in isolation would result in a lower/(higher) fair value measurement.

The table listed below provides a reconciliation of the beginning and ending net balances for assets and liabilities measured at fair value as of June 30, 2014 and 2013 and classified as Level 3 in the fair value hierarchy:

	For the Three Months Ended June 30, 2014
			Total Gains/(Losses)— Realized and Unrealized
(Millions of Dollars)	Beginning Balance as of April 1, 2014		Included in Earnings		Included in Regulatory Assets and Liabilities		Purchases		Issuances		Sales		Settlements		Transfer In/Out of Level 3		Ending Balance as of June 30, 2014
Con Edison
Derivatives:
Commodity		$24		$(2)		$3		$3		$—		$—		$(1)		$—		$27
CECONY
Derivatives:
Commodity		$13		$(2)		$3		$2		$—		$—		$(2)		$—		$14
	For the Six Months Ended June 30, 2014
			Total Gains/(Losses)— Realized and Unrealized
(Millions of Dollars)	Beginning Balance as of January 1, 2014		Included in Earnings		Included in Regulatory Assets and Liabilities		Purchases		Issuances		Sales		Settlements		Transfer In/Out of Level 3		Ending Balance as of June 30, 2014
Con Edison
Derivatives:
Commodity		$9		$49		$7		$11		$—		$—		$(49)		$—		$27
CECONY
Derivatives:
Commodity		$6		$9		$7		$9		$—		$—		$(17)		$—		$14

	For Three Months Ended June 30, 2013
			Total Gains/(Losses)— Realized and Unrealized
(Millions of Dollars)	Beginning Balance as of April 1, 2013		Included in Earnings			Included in Regulatory Assets and Liabilities			Purchases		Issuances		Sales		Settlements		Transfer In/Out of Level 3		Ending Balance as of June 30, 2013
Con Edison
Derivatives:
Commodity	$	14	$	(21	)	$	(2	)	$	2	$	—	$	—	$	1	$	—	$	(6)
CECONY
Derivatives:
Commodity	$	11	$	(2	)	$	—		$	1	$	—	$	—	$	(2)	$	—	$	8
	For Six Months Ended June 30, 2013
			Total Gains/(Losses)— Realized and Unrealized
(Millions of Dollars)	Beginning Balance as of January 1, 2013		Included in Earnings			Included in Regulatory Assets and Liabilities			Purchases		Issuances		Sales		Settlements		Transfer In/Out of Level 3		Ending Balance as of June 30, 2013
Con Edison
Derivatives:
Commodity	$	(5)	$	8		$	3		$	7	$	—	$	—	$	(19)	$	—	$	(6)
CECONY
Derivatives:
Commodity	$	10	$	7		$	1		$	5	$	—	$	—	$	(15)	$	—	$	8

For the Utilities, realized gains and losses on Level 3 commodity derivative assets and liabilities are reported as part of purchased power, gas and fuel costs. The Utilities generally recover these costs in accordance with rate provisions approved by the applicable state public utilities commissions. Unrealized gains and losses for commodity derivatives are generally deferred on the consolidated balance sheet in accordance with the accounting rules for regulated operations.

For the competitive energy businesses, realized and unrealized gains and losses on Level 3 commodity derivative assets and liabilities are reported in non-utility revenues (immaterial and $2 million loss) and purchased power costs (immaterial and $15 million loss) on the consolidated income statement for the three months ended June 30, 2014 and 2013, respectively. Realized and unrealized gains and losses on Level 3 commodity derivative assets and liabilities are reported in non-utility revenues (immaterial and $2 million loss) and purchased power costs ($40 million gain and $4 million gain) on the consolidated income statement for the six months ended June 30, 2014 and 2013, respectively. The change in fair value relating to Level 3 commodity derivative assets and liabilities held at June 30, 2014 and 2013 is included in non-utility revenues (immaterial and $2 million loss) and purchased power costs ($2 million gain and $14 million loss) on the consolidated income statement for the three months ended June 30, 2014 and 2013, respectively. For the six months ended June 30, 2014 and 2013, the change in fair value relating to Level 3 commodity derivative assets and liabilities is included in non-utility revenues (immaterial and $2 million loss) and purchased power costs ($11 million gain and $2 million gain) on the consolidated income statement, respectively.

The accounting rules for fair value measurements and disclosures require consideration of the impact of nonperformance risk (including credit risk) from a market participant perspective in the measurement of the fair value of assets and liabilities. At June 30, 2014, the Companies determined that nonperformance risk would have no material impact on their financial position or results of operations. To assess nonperformance risk, the Companies considered information such as collateral requirements, master netting arrangements, letters of credit and parent company guarantees, and applied a historical default probability based on current credit ratings and a market-based method by using the counterparty (for an asset) or the Companies’ (for a liability) credit default swaps rates.