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Changes in Goodwill by Reportable Segment (Detail)
In Millions
12 Months Ended
Mar. 31, 2011
USD ($)
Mar. 31, 2011
JPY (¥)
Mar. 31, 2010
JPY (¥)
Mar. 31, 2009
JPY (¥)
Mar. 31, 2011
Corporate Financial Services
USD ($)
Mar. 31, 2011
Corporate Financial Services
JPY (¥)
Mar. 31, 2010
Corporate Financial Services
JPY (¥)
Mar. 31, 2009
Corporate Financial Services
JPY (¥)
Mar. 31, 2011
Maintenance Leasing
USD ($)
Mar. 31, 2011
Maintenance Leasing
JPY (¥)
Mar. 31, 2010
Maintenance Leasing
JPY (¥)
Mar. 31, 2009
Maintenance Leasing
JPY (¥)
Mar. 31, 2011
Real Estate
USD ($)
Mar. 31, 2011
Real Estate
JPY (¥)
Mar. 31, 2010
Real Estate
JPY (¥)
Mar. 31, 2009
Real Estate
JPY (¥)
Mar. 31, 2011
Investment Banking
USD ($)
Mar. 31, 2011
Investment Banking
JPY (¥)
Mar. 31, 2010
Investment Banking
JPY (¥)
Mar. 31, 2009
Investment Banking
JPY (¥)
Mar. 31, 2011
Retail
USD ($)
Mar. 31, 2011
Retail
JPY (¥)
Mar. 31, 2010
Retail
JPY (¥)
Mar. 31, 2009
Retail
JPY (¥)
Mar. 31, 2011
Overseas
USD ($)
Mar. 31, 2011
Overseas
JPY (¥)
Mar. 31, 2010
Overseas
JPY (¥)
Mar. 31, 2009
Overseas
JPY (¥)
Goodwill [Line Items]                                                        
Goodwill $ 920 ¥ 76,484 ¥ 80,834 ¥ 84,096 $ 16 ¥ 1,332 ¥ 1,159 ¥ 3,046 $ 3 ¥ 282 ¥ 282 ¥ 282 $ 223 ¥ 18,536 ¥ 19,230 ¥ 17,845 $ 87 ¥ 7,199 ¥ 8,839 ¥ 9,977 $ 54 ¥ 4,452 ¥ 4,452 ¥ 4,452 $ 537 ¥ 44,683 ¥ 46,872 ¥ 48,494
Accumulated impairment losses (65) (5,410) (3,590) (1,900) (11) (951) (656) (656) 0 0 0 0 0 0 0 0 (54) (4,459) (2,934) (970) 0 0 0 0 0 0 0 (274)
Beginning Balance 855 71,074 77,244 82,196 5 381 503 2,390 3 282 282 282 223 18,536 19,230 17,845 33 2,740 5,905 9,007 54 4,452 4,452 4,452 537 44,683 46,872 48,220
Acquired 352 29,247 1,786 5,357 0 0 173 39 0 0 0 0 2 148 1,473 5,298 0 0 140 20 0 0 0 0 350 29,099 0 0
Impairment (2) (173) (2,688) (1,979) (2) (173) (295) 0 0 0 0 0 0 0 0 0 0 0 (2,393) (1,979) 0 0 0 0 0 0 0 0
Other (net) (65) [1] (5,358) [1] (5,268) [1] (8,330) [1] 0 [1] 0 [1] 0 [1] (1,926) [1] 0 [1] 0 [1] 0 [1] 0 [1] 4 [1] 363 [1] (2,167) [1] (3,913) [1] (16) [1] (1,334) [1] (912) [1] (1,143) [1] 0 [1] 0 [1] 0 [1] 0 [1] (53) [1] (4,387) [1] (2,189) [1] (1,348) [1]
Goodwill 1,172 97,397 76,484 80,834 9 677 1,332 1,159 3 282 282 282 229 19,047 18,536 19,230 43 3,544 7,199 8,839 54 4,452 4,452 4,452 834 69,395 44,683 46,872
Accumulated impairment losses (32) (2,607) (5,410) (3,590) (6) (469) (951) (656) 0 0 0 0 0 0 0 0 (26) (2,138) (4,459) (2,934) 0 0 0 0 0 0 0 0
Ending Balance $ 1,140 ¥ 94,790 ¥ 71,074 ¥ 77,244 $ 3 ¥ 208 ¥ 381 ¥ 503 $ 3 ¥ 282 ¥ 282 ¥ 282 $ 229 ¥ 19,047 ¥ 18,536 ¥ 19,230 $ 17 ¥ 1,406 ¥ 2,740 ¥ 5,905 $ 54 ¥ 4,452 ¥ 4,452 ¥ 4,452 $ 834 ¥ 69,395 ¥ 44,683 ¥ 46,872
[1] Other includes foreign currency translation adjustments and certain other reclassifications.