XML 122 R104.htm IDEA: XBRL DOCUMENT v2.4.0.6
Income Taxes (Schedule Of Valuation Allowance) (Detail) (JPY ¥)
In Millions, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Income Taxes [Abstract]      
Balance at beginning of year ¥ 3,900 ¥ 986 ¥ 1,509
Addition 2,321 753 447
Deduction (220) (905) (970)
Addition from acquisition   3,066  
Balance at end of year ¥ 6,001 ¥ 3,900 ¥ 986