Leases - Summary of future minimum lease payments to be received under noncancelable operating leases (Detail) ¥ in Millions	Sep. 30, 2021 JPY (¥)
Leases [Abstract]
Minimum lease payments to be received, Less than 1 year	¥ 4,411
Minimum lease payments to be received, 1 to 2 years	4,352
Minimum lease payments to be received, 2 to 3 years	4,352
Minimum lease payments to be received, 3 to 4 years	4,352
Minimum lease payments to be received, 4 to 5 years	4,352
Minimum lease payments to be received, More than 5 years	27,161
Minimum lease payments to be received, Total	¥ 48,980

No definition available.

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- Definition

Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123405975&loc=d3e41551-112718

+ Details

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- Definition

Future rental payments receivable within one year of the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future rental payments receivable within the third year from the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future rental payments receivable within the second year from the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

+ References

+ Details

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