Financing receivables (Tables)

6 Months Ended

Sep. 30, 2020

Financing Receivables [Abstract]

Summary of loans receivable reported within loans receivable or investments in and advances to affiliated companies

	Millions of yen
	March 31, 2020
	Carried at amortized cost		Carried at fair value(1)		Total
Loans receivable
Loans at banks	¥	521,715	¥	—	¥	521,715
Short-term secured margin loans		296,833		8,905		305,738
Inter-bank money market loans		865		—		865
Corporate loans		1,232,851		796,236		2,029,087
Total loans receivable	¥	2,052,264	¥	805,141	¥	2,857,405
	Millions of yen
	September 30, 2020
	Carried at amortized cost		Carried at fair value(1)		Total
Loans receivable
Loans at banks	¥	527,767	¥	—	¥	527,767
Short-term secured margin loans		340,175		18,255		358,430
Inter-bank money market loans		1,382		—		1,382
Corporate loans		670,441		786,060		1,456,501
Total loans receivable	¥	1,539,765	¥	804,315	¥	2,344,080

(1) Includes loans receivable and loan commitments carried at fair value through election of the fair value option.

Changes in allowance for credit losses

	Millions of yen
	Six months ended September 30, 2019
	Allowance for credit losses against loans
	Loans at banks		Short-term secured margin loans		Corporate loans			Subtotal			Allowance for receivables other than loans			Total allowance for doubtful accounts
Opening balance	¥	1,052	¥	370	¥	868		¥	2,290		¥	1,879		¥	4,169
Provision for credit losses		127		—		1,629			1,756			117			1,873
Charge-offs		—		—		—			—			(4	)		(4	)
Other(1)		—		4		(35	)		(31	)		(8	)		(39	)
Ending balance	¥	1,179	¥	374	¥	2,462		¥	4,015		¥	1,984		¥	5,999
	Millions of yen
	Three months ended September 30, 2019
	Allowance for credit losses against loans										Allowance for receivables other than loans			Total allowance for doubtful accounts
	Loans at banks		Short-term secured margin loans		Corporate loans			Subtotal
Opening balance	¥	1,052	¥	373	¥	844		¥	2,269		¥	1,914		¥	4,183
Provision for credit losses		127		—		1,629			1,756			74			1,830
Charge-offs		—		—		—			—			(3	)		(3	)
Other(1)		—		1		(11	)		(10	)		(1	)		(11	)
Ending balance	¥	1,179	¥	374	¥	2,462		¥	4,015		¥	1,984		¥	5,999

(1) Includes the effect of foreign exchange movements.

	Millions of yen
	Six months ended September 30, 2020
	Allowance for current expected credit losses against loans												Allowance for receivables other than loans(2)			Total allowance for doubtful accounts
	Loans at banks			Short-term secured margin loans			Corporate loans			Subtotal
Opening balance prior to CECL adoption	¥	1,564		¥	352		¥	7,944		¥	9,860		¥	3,152		¥	13,012
Impact of CECL adoption(1)		232			—			1,738			1,970			2			1,972
Opening balance after CECL adoption		1,796			352			9,682			11,830			3,154			14,984
Provision for credit losses		(232	)		—			(2,244	)		(2,476	)		1,075			(1,401	)
Charge-offs		(318	)		(359	)		0			(677	)		(1,315	)		(1,992	)
Other(3)		—			7			(225	)		(218	)		(17	)		(235	)
Ending balance	¥	1,246		¥	—		¥	7,213		¥	8,459		¥	2,897		¥	11,356

	Millions of yen
	Three months ended September 30, 2020
	Allowance for current expected credit losses against loans												Allowance for receivables other than loans(2)			Total allowance for doubtful accounts
	Loans at banks			Short-term secured margin loans			Corporate loans			Subtotal
Opening balance		1,454			292			7,727			9,473			2,881			12,354
Provision for losses		110			76			(392	)		(206	)		31			(175	)
Charge-offs		(318	)		(359	)		0			(677	)		7			(670	)
Other(3)		—			(9	)		(122	)		(131	)		(22	)		(153	)
Ending balance	¥	1,246		¥	—		¥	7,213		¥	8,459		¥	2,897		¥	11,356

(1) The balance recognized on April 1, 2020 on adoption of ASC 326.

(2) Includes collateralized agreements, customer contract assets and receivables and other receivables.

(3) Includes the effect of foreign exchange movements.

Analysis of each class of loans not carried at fair value using internal ratings or equivalent credit quality indicators

	Millions of yen
	September 30, 2020
	2020		2019		2018		2017		2016		2015 or earlier		Revolving		Total
Secured loans at banks:
AAA-BBB	¥	106,020	¥	31,372	¥	12,902	¥	4,309	¥	4,707	¥	11,192	¥	682	¥	171,184
BB-CCC		147,268		25,390		2,388		—		768		9,608		31		185,453
CC-D		—		—		—		—		—		—		—		—
Others(1)		54,135		—		—		—		—		—		—		54,135
Total secured loans at banks	¥	307,423	¥	56,762	¥	15,290	¥	4,309	¥	5,475	¥	20,800	¥	713	¥	410,772
Unsecured loans at banks:
AAA-BBB	¥	16,179	¥	30,941	¥	20,957	¥	9,673	¥	22,947	¥	7,555	¥	7,299	¥	115,551
BB-CCC		—		244		—		—		1,200		—		—		1,444
CC-D		—		—		—		—		—		—		—		—
Others(1)		—		—		—		—		—		—		—		—
Total unsecured loans at banks	¥	16,179	¥	31,185	¥	20,957	¥	9,673	¥	24,147	¥	7,555	¥	7,299	¥	116,995
Short-term secured margin loans:
AAA-BBB	¥	—	¥	—	¥	—	¥	—	¥	—	¥	—	¥	—	¥	—
BB-CCC		—		—		—		—		—		—		—		—
CC-D		—		—		—		—		—		—		—		—
Others(1)		143,295		136		—		—		—		—		196,744		340,175
Total short-term secured margin loans	¥	143,295	¥	136	¥	—	¥	—	¥	—	¥	—	¥	196,744	¥	340,175
Unsecured inter-bank money market loans:
AAA-BBB	¥	1,382	¥	—	¥	—	¥	—	¥	—	¥	—	¥	—	¥	1,382
BB-CCC		—		—		—		—		—		—		—		—
CC-D		—		—		—		—		—		—		—		—
Others(1)		—		—		—		—		—		—		—		—
Total unsecured inter-bank money market loans	¥	1,382	¥	—	¥	—	¥	—	¥	—	¥	—	¥	—	¥	1,382
Secured corporate loans:
AAA-BBB	¥	35,342	¥	107,155	¥	10,054	¥	6,774	¥	1,247	¥	22,805	¥	—	¥	183,377
BB-CCC		34,429		49,151		79,001		17,087		8,885		9,094		205,008		402,655
CC-D		—		—		—		—		—		—		—		—
Others(1)		8		33		12		29		4,179		88		517		4,866
Total secured corporate loans	¥	69,779	¥	156,339	¥	89,067	¥	23,890	¥	14,311	¥	31,987	¥	205,525	¥	590,898

	Millions of yen
	September 30, 2020
	2020		2019		2018		2017		2016		2015 or earlier		Revolving		Total
Unsecured corporate loans:
AAA-BBB	¥	6,537	¥	—	¥	—	¥	—	¥	—	¥	—	¥	—	¥	6,537
BB-CCC		—		3,917		—		—		—		31		—		3,948
CC-D		—		—		—		—		—		—		—		—
Others(1)		202		47		68,796		—		—		13		—		69,058
Total unsecured corporate loans	¥	6,739	¥	3,964	¥	68,796	¥	—	¥	—	¥	44	¥	—	¥	79,543
Total	¥	544,797	¥	248,386	¥	194,110	¥	37,872	¥	43,933	¥	60,386	¥	410,281	¥	1,539,765

(1) Relate to collateralized exposures where a specified ratio of LTV is maintained.