Summary of accounting policies (Tables)

12 Months Ended

Mar. 31, 2016

Summary of accounting policies

Breakdown of Office buildings, land, equipment and facilities

	Millions of yen
	March 31
	2015		2016
Land	¥	91,055	¥	80,031
Office buildings		105,043		99,400
Equipment and facilities		46,186		27,380
Software		158,348		147,235
Construction in progress		437		1,461
Total	¥	401,069	¥	355,507

Schedule of estimated useful lives for significant asset classes

Office buildings	5 to 50 years
Equipment and facilities	2 to 20 years
Software	Up to 5 years