Derivative instruments and hedging activities (Tables)

12 Months Ended

Mar. 31, 2022

Derivative Instruments And Hedging Activities [Abstract]

Summary of Outstanding Derivative Instruments

The estimated fair values of Sony’s outstanding derivative instruments are summarized as follows:

	Yen in millions
	April 1, 2020				March 31, 2021				March 31, 2022
	Asset derivatives		Liability derivatives		Asset derivatives		Liability derivatives		Asset derivatives		Liability derivatives
Interest rate contracts
Interest rate swap agreements		1,604		17,621		12,788		14,757		26,795		6,455
Interest rate swaptions agreements		—		58		—		205		—		1,075
Foreign exchange contracts
Foreign exchange forward contracts		10,023		6,822		7,820		13,241		14,687		34,284
Swap agreements		6,020		7,027		4,912		4,422		11,897		925
Currency option contracts purchased		7		—		15		—		42		—
Currency option contracts written		—		5		—		1,790		—		172
Other currency contracts		5,453		2,482		2,944		780		3,578		1,201
Equity contracts
Equity future contracts		605		1,476		240		986		—		11,903
Equity swap agreements		18,280		—		—		4,171		—		16,105
Option contracts purchased		4,081		—		10,177		—		4,024		—
Other
Other contracts		391		375		17		2		—		—
Total derivatives		46,464		35,866		38,913		40,354		61,023		72,120

Summary of Estimated Fair Values and Maturity Analysis for Notional Amounts of Sony's Outstanding Derivative Instruments

The estimated fair values and maturity analysis for notional amounts of Sony’s outstanding derivative instruments which are designated as hedging instruments are summarized as follows:

	Yen in millions
	April 1, 2020
	Notional amounts							Fair Value
	Within 1 Year		Over 1 Year			Total		Asset derivatives		Liability derivatives		Balance sheet location
Cash flow hedging relationships
Foreign exchange forward contracts		173,398		—			173,398		1,799		—		Current assets: Other financial assets
Average rate (JPY/USD)		108.9		—
	Yen in millions
	March 31, 2021
	Notional amounts							Fair Value
	Within 1 Year		Over 1 Year			Total		Asset derivatives		Liability derivatives		Balance sheet location
Cash flow hedging relationships
Foreign exchange forward contracts		100,177		—			100,177		—		4,221		Current liabilities: Other financial liabilities
Average rate (JPY/USD)		106.0		—
Currency option bought contracts		32,754		—			32,754		8		—		Current assets: Other financial assets
Average rate (JPY/USD)		103.0		—
Currency option sold contracts		33,390		—			33,390		—		1,779		Current liabilities: Other financial liabilities
Average rate (JPY/USD)		105.0		—
Interest rate swap agreements		—		132,852			132,852		10,438		—		Non-current assets: Other financial assets
Average rate		—		1.5	%

	Yen in millions
	March 31, 2022
	Notional amounts							Fair Value
	Within 1 Year		Over 1 Year			Total		Asset derivatives		Liability derivatives		Balance sheet location
Cash flow hedging relationships
Foreign exchange forward contracts		138,135		—			138,135		—		7,618		Current liabilities: Other financial liabilities
Average rate (JPY/USD)		115.3		—
Currency option bought contracts		4,830		—			4,830		28		—		Current assets: Other financial assets
Average rate (JPY/USD)		115.0		—
Currency option sold contracts		4,975		—			4,975		—		161		Current liabilities: Other financial liabilities
Average rate (JPY/USD)		118.5		—
Interest rate swap agreements		—		146,778			146,778		17,987		—		Non-current assets: Other financial assets
Average rate		—		1.5	%

Summary Of Changes in Fair Value Of Hedging Instruments Related to Cash Flow Hedges Recorded In Accumulated Other Comprehensive Income

Changes in the fair value of hedging instruments related to cash flow hedges are recorded in accumulated other comprehensive income for the fiscal years ended March 31, 2021 and 2022.

	Yen in millions
	Foreign exchange contracts			Interest rate contracts			Total
Balance as of April 1, 2020		1,248			—			1,248
Changes in fair value of hedging instruments recognized in other comprehensive income		(2,672	)		10,153			7,481
Reclassification adjustments to profit (loss) for the year*1,2		(5,119	)		(2,109	)		(7,228	)
Deferred tax		2,261			(2,463	)		(202	)
Balance as of March 31, 2021		(4,282	)		5,581			1,299
Changes in fair value of hedging instruments recognized in other comprehensive income		(14,645	)		6,942			(7,703	)
Reclassification adjustments to profit (loss) for the year*1,2		12,886			1,643			14,529
Deferred tax		538			(2,629	)		(2,091	)
Balance as of March 31, 2022		(5,503	)		11,537			6,034

*1 In the consolidated statements of income, the amount reclassified to profit (loss) is included in sales for hedges of foreign exchange contracts and in financial expenses for hedges of interest rate contracts.

*2 For the fiscal years ended March 31, 2021 and 2022, hedge ineffectiveness recognized in profit or loss was not material.