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Goodwill and Other Intangible Assets (Other Intangible Assets) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2023	Mar. 31, 2022
Indefinite-lived intangible assets:
Trade names	¥ 115,049	¥ 44,975
Asset management contracts	51,558	48,533
Others	12,375	12,126
Indefinite-Lived Intangible Assets (Excluding Goodwill), Total	178,982	105,634
Intangible assets subject to amortization:
Software	141,747	130,118
Customer relationships	161,936	143,963
Asset management contracts	104,481	98,014
Others	154,413	123,397
Finite-Lived Intangible Assets, Gross, Total	562,577	495,492
Accumulated amortization	(223,417)	(197,505)
Net	339,160	297,987
Intangible Assets, Net (Excluding Goodwill), Total	¥ 518,142	¥ 403,621

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Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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Gross carrying amount before accumulated amortization as of the balance sheet date of an intangible asset that arises from a contractual arrangement with a third party (not including franchise rights and license agreements).

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Gross carrying amount before accumulated amortization as of the balance sheet date to an asset acquired in a business combination representing a favorable existing relationship with customers having a finite beneficial life.

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Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date of rights with an indefinite period of benefit that arose from a contractual arrangement with a third party (not including franchise rights and license agreements).

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Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit.

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