Summary of accounting policies (Tables)

12 Months Ended

Mar. 31, 2015

Summary of accounting policies

Breakdown of Office buildings, land, equipment and facilities

	Millions of yen
	March 31
	2014		2015
Land	¥	94,991	¥	91,055
Office buildings		109,052		105,043
Equipment and facilities		48,101		46,186
Software		156,717		158,348
Construction in progress		56		437
Total	¥	408,917	¥	401,069

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