Goodwill and Other Intangible Assets (Other Intangible Assets) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Indefinite-lived intangible assets:
Trade names	¥ 44,975	¥ 67,888
Asset management contracts	48,533	161,081
Others	12,126	5,312
Indefinite-Lived Intangible Assets (Excluding Goodwill), Total	105,634	234,281
Intangible assets subject to amortization:
Software	130,118	129,695
Customer relationships	143,963	155,807
Asset management contracts	98,014	0
Others	123,397	90,354
Finite-Lived Intangible Assets, Gross, Total	495,492	375,856
Accumulated amortization	(197,505)	(184,589)
Net	297,987	191,267
Intangible Assets, Net (Excluding Goodwill), Total	¥ 403,621	¥ 425,548

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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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite 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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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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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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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Amount before accumulated amortization of finite-lived intangible assets classified as other.

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Amount after impairment of indefinite-lived intangible assets classified as other. Excludes financial assets and goodwill.

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