Commitments, contingencies and guarantees (Tables)

6 Months Ended

Sep. 30, 2021

Commitments, Contingencies and Guarantees [Abstract]

Commitments outstanding

	Millions of yen
	March 31, 2021		September 30, 2021
Commitments to extend credit
Liquidity facilities to central clearing counterparties	¥	1,400,076	¥	1,214,587
Other commitments to extend credit		901,867		1,056,581
Total	¥	2,301,943	¥	2,271,168
Commitments to invest	¥	136,367	¥	26,511

Maturity schedule of commitments

	Millions of yen
			Years to Maturity
	Total contractual amount		Less than 1 year		1 to 3 years		3 to 5 years		More than 5 years
Commitments to extend credit
Liquidity facilities to central clearing counterparties	¥	1,214,587	¥	1,214,587	¥	—	¥	—	¥	—
Other commitments to extend credit		1,056,581		305,693		226,516		188,982		335,390
Total	¥	2,271,168	¥	1,520,280	¥	226,516	¥	188,982	¥	335,390
Commitments to invest	¥	26,511	¥	136	¥	2,038	¥	4,239	¥	20,099

Information on derivative contracts and standby letters of credit and other guarantees

	Millions of yen
	March 31, 2021				September 30, 2021
	Carrying value		Maximum Potential Payout/ Notional Total		Carrying value		Maximum Potential Payout/ Notional Total
Derivative contracts(1)(2)	¥	5,207,911	¥	322,635,226	¥	4,192,556	¥	335,257,050
Standby letters of credit and other guarantees(3)		—		206,072		—		592,318

(1) Credit derivatives are disclosed in Note 3. “Derivative instruments and hedging activities” and are excluded from derivative contracts.

(2) Derivative contracts primarily consist of equity, interest rate and foreign exchange contracts.

(3) As of March 31, 2021 and September 30, 2021, primarily related to a certain sponsored repo program where Nomura guarantees to a 3rd party clearing house the payment of its clients’ obligations. Our exposure under this guarantee is minimized through effectively obtaining collaterals whose amount is approximately equal to the maximum potential payout of the guarantee.

Maturity information on derivative contracts and standby letters of credit and other guarantees

	Millions of yen
	Carrying value		Maximum Potential Payout/Notional
			Total		Years to Maturity
					Less than 1 year		1 to 3 years		3 to 5 years		More than 5 years
Derivative contracts	¥	4,192,556	¥	335,257,050	¥	74,966,306	¥	88,589,281	¥	49,474,447	¥	122,227,016
Standby letters of credit and other guarantees		—		592,318		574,803		14,028		283		3,204