Financing receivables (Tables)

12 Months Ended

Mar. 31, 2017

Financing receivables

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

	Millions of yen
	March 31, 2016
	Carried at amortized cost		Carried at fair value(1)		Total
Loans receivable
Loans at banks	¥	364,976	¥	—	¥	364,976
Short-term secured margin loans		377,437		—		377,437
Inter-bank money market loans		9,751		—		9,751
Corporate loans		551,673		301,766		853,439
Total loans receivable	¥	1,303,837	¥	301,766	¥	1,605,603
Advances to affiliated companies		300		—		300
Total	¥	1,304,137	¥	301,766	¥	1,605,903

	Millions of yen
	March 31, 2017
	Carried at amortized cost		Carried at fair value(1)		Total
Loans receivable
Loans at banks	¥	386,127	¥	—	¥	386,127
Short-term secured margin loans		358,572		—		358,572
Inter-bank money market loans		1,040		—		1,040
Corporate loans		592,425		537,664		1,130,089
Total loans receivable	¥	1,338,164	¥	537,664	¥	1,875,828
Advances to affiliated companies		300		—		300
Total	¥	1,338,464	¥	537,664	¥	1,876,128

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

Changes in allowance for losses for credit losses

	Millions of yen
	Year ended March 31, 2015
	Allowance for credit losses against loans																		Allowance for credit losses against receivables other than loans			Total allowance for doubtful accounts
	Loans at banks			Short-term secured margin loans			Inter-bank money market loans			Corporate loans			Advances to affiliated companies			Subtotal
Opening balance	¥	678		¥	87		¥	—		¥	82		¥	1		¥	848		¥	2,161		¥	3,009
Provision for credit losses		61			53			—			(3	)		0			111			254			365
Charge-offs		—			—			—			—			—			—			(189	)		(189	)
Other(1)		—			2			—			0			—			2			66			68
Ending balance	¥	739		¥	142		¥	—		¥	79		¥	1		¥	961		¥	2,292		¥	3,253
	Millions of yen
	Year ended March 31, 2016
	Allowance for credit losses against loans																		Allowance for credit losses against receivables other than loans			Total allowance for doubtful accounts
	Loans at banks			Short-term secured margin loans			Inter-bank money market loans			Corporate loans			Advances  to affiliated companies			Subtotal
Opening balance	¥	739		¥	142		¥	—		¥	79		¥	1		¥	961		¥	2,292		¥	3,253
Provision for credit losses		173			(75	)		7			(71	)		(1	)		33			287			320
Charge-offs		—			—			—			—			—			—			—			—
Other(1)		—			(1	)		—			0			—			(1	)		(95	)		(96	)
Ending balance	¥	912		¥	66		¥	7		¥	8		¥	0		¥	993		¥	2,484		¥	3,477
	Millions of yen
	Year ended March 31, 2017
	Allowance for credit losses against loans																		Allowance for credit losses against receivables other than loans			Total allowance for doubtful accounts
	Loans at banks			Short-term secured margin loans			Inter-bank money market loans			Corporate loans			Advances to affiliated companies			Subtotal
Opening balance	¥	912		¥	66		¥	7		¥	8		¥	0		¥	993		¥	2,484		¥	3,477
Provision for credit losses		72			5			(7	)		465			—			535			(12	)		523
Charge-offs		(16	)		(5	)		—			—			0			(21	)		—			(21	)
Other(1)		—			(66	)		—			0			—			(66	)		(362	)		(428	)
Ending balance	¥	968		¥	—		¥	—		¥	473		¥	0		¥	1,441		¥	2,110		¥	3,551

(1) Includes the effect of foreign exchange movements.

Schedule of allowance for credit losses against loans and loans by impairment methodology and type of loans

	Millions of yen
	March 31, 2016
	Loans at banks		Short-term secured margin loans		Inter-bank money market loans		Corporate loans		Advances to affiliated companies		Total
Allowance by impairment methodology
Evaluated individually	¥	—	¥	—	¥	—	¥	7	¥	—	¥	7
Evaluated collectively		912		66		7		1		0		986
Total allowance for credit losses	¥	912	¥	66	¥	7	¥	8	¥	0	¥	993
Loans by impairment methodology
Evaluated individually	¥	4,513	¥	139,183	¥	1,371	¥	543,050	¥	—	¥	688,117
Evaluated collectively		360,463		238,254		8,380		8,623		300		616,020
Total loans	¥	364,976	¥	377,437	¥	9,751	¥	551,673	¥	300	¥	1,304,137
	Millions of yen
	March 31, 2017
	Loans at banks		Short-term secured margin loans		Inter-bank money market loans		Corporate loans		Advances to affiliated companies		Total
Allowance by impairment methodology
Evaluated individually	¥	1	¥	—	¥	—	¥	446	¥	—	¥	447
Evaluated collectively		967		—		—		27		0		994
Total allowance for credit losses	¥	968	¥	—	¥	—	¥	473	¥	0	¥	1,441
Loans by impairment methodology
Evaluated individually	¥	4,722	¥	164,084	¥	1,040	¥	579,290	¥	—	¥	749,136
Evaluated collectively		381,405		194,488		—		13,135		300		589,328
Total loans	¥	386,127	¥	358,572	¥	1,040	¥	592,425	¥	300	¥	1,338,464

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

	Millions of yen
	March 31, 2016
	AAA-BBB		BB-CCC		CC-D		Others(1)		Total
Secured loans at banks	¥	125,371	¥	75,853	¥	0	¥	39,281	¥	240,505
Unsecured loans at banks		122,411		2,059		1		—		124,471
Short-term secured margin loans		—		—		—		377,437		377,437
Secured inter-bank money market loans		—		—		—		—		—
Unsecured inter-bank money market loans		9,751		—		—		—		9,751
Secured corporate loans		268,206		264,323		3,974		4,119		540,622
Unsecured corporate loans		2,957		1,123		—		6,971		11,051
Advances to affiliated companies		300		—		—		—		300
Total	¥	528,996	¥	343,358	¥	3,975	¥	427,808	¥	1,304,137
	Millions of yen
	March 31, 2017
	AAA-BBB		BB-CCC		CC-D		Others(1)		Total
Secured loans at banks	¥	124,997	¥	89,022	¥	—	¥	36,406	¥	250,425
Unsecured loans at banks		134,141		1,559		1		1		135,702
Short-term secured margin loans		—		—		—		358,574		358,574
Secured inter-bank money market loans		—		—		—		—		—
Unsecured inter-bank money market loans		1,040		—		—		—		1,040
Secured corporate loans		286,384		287,469		—		5,702		579,555
Unsecured corporate loans		1,859		284		—		10,727		12,870
Advances to affiliated companies		300		—		—		—		300
Total	¥	548,721	¥	378,334	¥	1	¥	411,410	¥	1,338,466

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