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Total Income Tax Recognized (Detail) (JPY ¥) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Income Taxes [Line Items]
Provision for income taxes	¥ 97,236	¥ 53,682	¥ 44,608
Income taxes on discontinued operations	4,681	(347)	(1,219)
Income taxes on other comprehensive income (loss):
Net unrealized gains (losses) on investment in securities	4,728	5,936	1,357
Defined benefit pension plans	1,396	2,727	(1,774)
Foreign currency translation adjustments	1,756	7,225	335
Net unrealized gains (losses) on derivative instruments	357	42	(648)
Total income taxes	¥ 110,154	¥ 69,265	¥ 42,659

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Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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