Employee benefit plans (Tables)

6 Months Ended

Sep. 30, 2014

Employee benefit plans

Net periodic benefit cost of defined benefit plans

	Millions of yen
	Six months ended September 30
	2013			2014
Service cost	¥	4,237		¥	3,882
Interest cost		1,721			1,545
Expected return on plan assets		(2,486	)		(2,866	)
Amortization of net actuarial losses		1,336			1,063
Amortization of prior service cost		(574	)		(573	)
Net periodic benefit cost	¥	4,234		¥	3,051
	Millions of yen
	Three months ended September 30
	2013			2014
Service cost	¥	2,070		¥	1,945
Interest cost		861			772
Expected return on plan assets		(1,243	)		(1,433	)
Amortization of net actuarial losses		668			589
Amortization of prior service cost		(287	)		(285	)
Net periodic benefit cost	¥	2,069		¥	1,588