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Changes in Goodwill by Reportable Segment (Detail)
In Millions, unless otherwise specified
12 Months Ended
Mar. 31, 2012
USD ($)
Mar. 31, 2012
JPY (¥)
Mar. 31, 2011
JPY (¥)
Mar. 31, 2010
JPY (¥)
Mar. 31, 2012
Corporate Financial Services
USD ($)
Mar. 31, 2012
Corporate Financial Services
JPY (¥)
Mar. 31, 2011
Corporate Financial Services
JPY (¥)
Mar. 31, 2010
Corporate Financial Services
JPY (¥)
Mar. 31, 2012
Maintenance Leasing
USD ($)
Mar. 31, 2012
Maintenance Leasing
JPY (¥)
Mar. 31, 2011
Maintenance Leasing
JPY (¥)
Mar. 31, 2010
Maintenance Leasing
JPY (¥)
Mar. 31, 2012
Real Estate
USD ($)
Mar. 31, 2012
Real Estate
JPY (¥)
Mar. 31, 2011
Real Estate
JPY (¥)
Mar. 31, 2010
Real Estate
JPY (¥)
Mar. 31, 2012
Investment and Operation
USD ($)
Mar. 31, 2012
Investment and Operation
JPY (¥)
Mar. 31, 2011
Investment and Operation
JPY (¥)
Mar. 31, 2010
Investment and Operation
JPY (¥)
Mar. 31, 2012
Retail
USD ($)
Mar. 31, 2012
Retail
JPY (¥)
Mar. 31, 2011
Retail
JPY (¥)
Mar. 31, 2010
Retail
JPY (¥)
Mar. 31, 2012
Overseas
USD ($)
Mar. 31, 2012
Overseas
JPY (¥)
Mar. 31, 2011
Overseas
JPY (¥)
Mar. 31, 2010
Overseas
JPY (¥)
Goodwill [Line Items]                                                        
Goodwill $ 1,185 ¥ 97,397 ¥ 76,484 ¥ 80,834 $ 7 ¥ 547 ¥ 1,202 ¥ 1,029 $ 3 ¥ 282 ¥ 282 ¥ 282 $ 232 ¥ 19,047 ¥ 18,536 ¥ 19,230 $ 44 ¥ 3,674 ¥ 7,329 ¥ 8,969 $ 54 ¥ 4,452 ¥ 4,452 ¥ 4,452 $ 845 ¥ 69,395 ¥ 44,683 ¥ 46,872
Accumulated impairment losses (32) (2,607) (5,410) (3,590) (6) (430) (912) (617) 0 0 0 0 0 0 0 0 (26) (2,177) (4,498) (2,973) 0 0 0 0 0 0 0 0
Beginning Balance 1,153 94,790 71,074 77,244 1 117 290 412 3 282 282 282 232 19,047 18,536 19,230 18 1,497 2,831 5,996 54 4,452 4,452 4,452 845 69,395 44,683 46,872
Acquired 49 4,024 29,247 1,786 5 380 0 173 0 0 0 0 0 44 148 1,473 0 14 0 140 0 0 0 0 44 3,586 29,099 0
Impairment 0 0 (173) (2,688) 0 0 (173) (295) 0 0 0 0 0 0 0 0 0 0 0 (2,393) 0 0 0 0 0 0 0 0
Other (net) (36) [1] (3,003) [1] (5,358) [1] (5,268) [1] 0 [1] 0 [1] 0 [1] 0 [1] 0 [1] 0 [1] 0 [1] 0 [1] 0 [1] (28) [1] 363 [1] (2,167) [1] (15) [1] (1,238) [1] (1,334) [1] (912) [1] 0 [1] 0 [1] 0 [1] 0 [1] (21) [1] (1,737) [1] (4,387) [1] (2,189) [1]
Goodwill 1,169 96,107 97,397 76,484 9 754 547 1,202 3 282 282 282 232 19,063 19,047 18,536 3 312 3,674 7,329 54 4,452 4,452 4,452 868 71,244 69,395 44,683
Accumulated impairment losses (3) (296) (2,607) (5,410) (3) (257) (430) (912) 0 0 0 0 0 0 0 0 0 (39) (2,177) (4,498) 0 0 0 0 0 0 0 0
Ending Balance $ 1,166 ¥ 95,811 ¥ 94,790 ¥ 71,074 $ 6 ¥ 497 ¥ 117 ¥ 290 $ 3 ¥ 282 ¥ 282 ¥ 282 $ 232 ¥ 19,063 ¥ 19,047 ¥ 18,536 $ 3 ¥ 273 ¥ 1,497 ¥ 2,831 $ 54 ¥ 4,452 ¥ 4,452 ¥ 4,452 $ 868 ¥ 71,244 ¥ 69,395 ¥ 44,683
[1] Other includes foreign currency translation adjustments and certain other reclassifications.