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Fair Value Measurements (Tables)

9 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Valuation Techniques

The measurement of fair value results in classification into a hierarchy by the inputs used to determine the fair value as follows:

Level 1			—						Unadjusted quoted prices in active markets accessible by the reporting entity for identical assets or liabilities.  Active markets are those in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing.
Level 2			—						Pricing inputs other than quoted market prices included in Level 1 that are based on observable market data and that are directly or indirectly observable for substantially the full term of the asset or liability.  These include quoted market prices for similar assets or liabilities, quoted market prices for identical or similar assets in markets that are not active, adjusted quoted market prices, inputs from observable data such as interest rate and yield curves, volatilities and default rates observable at commonly quoted intervals, and inputs derived from observable market data by correlation or other means.
Level 3			—						Pricing inputs that are unobservable, or less observable, from objective sources.  Unobservable inputs are only to be used to the extent observable inputs are not available.  These inputs maintain the concept of an exit price from the perspective of a market participant and should reflect assumptions of other market participants.  An entity should consider all market participant assumptions that are available without unreasonable cost and effort.  These are given the lowest priority and are generally used in internally developed methodologies to generate management's best estimate of the fair value when no observable market data is available.

Unrealized Investment Gains (Losses)

TVA recorded unrealized gains and losses related to its equity and trading debt securities held during each period as follows:

Unrealized Investment Gains (Losses) (in millions)
												Three Months Ended June 30												Nine Months Ended June 30
Fund						Financial Statement Presentation						2021						2020						2021						2020
NDT						Regulatory asset						$	107					$	235					$	361					$	(11)
ART						Regulatory asset						48						97						168						(1)
SERP						Other income (expense)						3						7						8						(1)
DCP						Other income (expense)						1						2						1						—

Fair Value Measurements

Fair Value Measurements At June 30, 2021 (in millions)
			Quoted Prices in Active  Markets for Identical Assets (Level 1)						Significant Other Observable Inputs (Level 2)						Significant Unobservable Inputs (Level 3)						Total
Assets
Investments
Equity securities			$	644					$	—					$	—					$	644
Government debt securities(1)			603						28						—						631
Corporate debt securities(2)			—						417						—						417
Mortgage and asset-backed securities			—						33						—						33
Institutional mutual funds			223						—						—						223
Forward debt securities contracts			—						2						—						2
Private equity funds measured at net asset value(3)			—						—						—						309
Private real asset funds measured at net asset value(3)			—						—						—						241
Private credit measured at net asset value(3)			—						—						—						65
Commingled funds measured at net asset value(3)			—						—						—						1,403
Total investments			1,470						480						—						3,968
Commodity contract derivatives			—						110						—						110
Total			$	1,470					$	590					$	—					$	4,078
			Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Other Observable Inputs (Level 2)						Significant Unobservable Inputs (Level 3)						Total
Liabilities
Currency swaps(4)			$	—					$	51					$	—					$	51
Interest rate swaps			—						1,666						—						1,666
Commodity contract derivatives			—						4						—						4
Total			$	—					$	1,721					$	—					$	1,721

Notes

(1) Includes obligations of government-sponsored entities.

(2) Includes both U.S. and foreign debt.

(3) Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented on the Consolidated Balance Sheets.

(4)  TVA records currency swaps net of cash collateral received from or paid to the counterparty, to the extent such amount is not recorded in Accounts payable and accrued liabilities. See Note 13 — Risk Management Activities and Derivative Transactions — Offsetting of Derivative Assets and Liabilities.

Fair Value Measurements At September 30, 2020 (in millions)
			Quoted Prices in Active  Markets for Identical Assets (Level 1)						Significant Other Observable Inputs (Level 2)						Significant Unobservable Inputs (Level 3)						Total
Assets
Investments
Equity securities			$	500					$	—					$	—					$	500
Government debt securities(1)			485						40						—						525
Corporate debt securities(2)			—						356						—						356
Mortgage and asset-backed securities			—						27						—						27
Institutional mutual funds			188						—						—						188
Forward debt securities contracts			—						13						—						13
Private equity funds measured at net asset value(3)			—						—						—						194
Private real asset funds measured at net asset value(3)			—						—						—						168
Private credit measured at net asset value(3)			—						—						—						53
Commingled funds measured at net asset value(3)			—						—						—						1,174
Total investments			1,173						436						—						3,198
Commodity contract derivatives			—						49						—						49
Total			$	1,173					$	485					$	—					$	3,247
			Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Other Observable Inputs (Level 2)						Significant Unobservable Inputs (Level 3)						Total
Liabilities
Currency swaps(4)			$	—					$	209					$	—					$	209
Interest rate swaps			—						2,041						—						2,041
Commodity contract derivatives			—						3						—						3
Total			$	—					$	2,253					$	—					$	2,253

Notes

(1) Includes obligations of government-sponsored entities.

(2) Includes both U.S. and foreign debt.

(3) Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented on the Consolidated Balance Sheets.

(4)  TVA records currency swaps net of cash collateral received from or paid to the counterparty, to the extent such amount is not recorded in Accounts payable and accrued liabilities. See Note 13 — Risk Management Activities and Derivative Transactions — Offsetting of Derivative Assets and Liabilities.

Fair Value Measurements Using Significant Unobservable Inputs

he following table presents a reconciliation of all commodity contract derivatives measured at fair value on a recurring basis using significant unobservable inputs (Level 3):

Fair Value Measurements Using Significant Unobservable Inputs (in millions)
			Commodity Contract Derivatives(1)
			Three Months Ended June 30						Nine Months Ended June 30
Balance at beginning of period			$	(7)					$	(4)
Settlements			(1)						(1)
Change in net unrealized gains (losses) deferred as regulatory assets and liabilities			(2)						(5)
Balance at June 30, 2020			$	(10)					$	(10)

Note

(1) During the fourth quarter of 2020, TVA discontinued derivative accounting for forward coal contracts. Therefore, the fair value measurement using significant unobservable inputs was zero at October 1, 2020, and June 30, 2021.

Estimated Values of Financial Instruments Not Recorded at Fair Value

The estimated values of TVA's financial instruments not recorded at fair value at June 30, 2021, and September 30, 2020, were as follows:

Estimated Values of Financial Instruments Not Recorded at Fair Value (in millions)
									At June 30, 2021												At September 30, 2020
			Valuation Classification						Carrying Amount						Fair Value						Carrying Amount						Fair Value
EnergyRight® receivables, net (including current portion)			Level 2						$	74					$	74					$	87					$	86
Loans and other long-term receivables, net (including current portion)			Level 2						118						109						105						93
EnergyRight® financing obligations (including current portion)			Level 2						85						95						97						108
Unfunded loan commitments			Level 2						—						4						—						2
Membership interests of VIEs subject to mandatory redemption (including current portion)			Level 2						24						32						26						35
Long-term outstanding power bonds (including current maturities), net			Level 2						18,000						23,943						19,743						26,630
Long-term debt of VIEs (including current maturities), net			Level 2						1,070						1,346						1,089						1,419

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The tabular disclosure of the estimated values of financial instruments not recorded at fair value. This disclosure includes the class of financial instrument, valuation classification, carrying amount, and fair value.

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