Future Minimum Lease Payments under Capital Leases with Present Value of Net Minimum Lease Payments (Detail) (JPY ¥) In Millions, unless otherwise specified	Mar. 31, 2013
Schedule of Capital Lease Obligations [Line Items]
2014	¥ 20,535
2015	5,350
2016	3,248
2017	2,820
2018	2,585
Later years	6,286
Total minimum lease payments	40,824
Less - Amount representing interest	2,568
Present value of net minimum lease payments	38,256
Less - Current obligations	19,718
Long-term capital lease obligations	¥ 18,538

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date.

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Amount of minimum lease payments maturing in the fifth fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the forth fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the third fiscal year following the latest fiscal year for capital leases.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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