Derivative Financial Instruments and Hedging (Derivative instruments fair value hedge assets and liabilities) (Detail) ¥ in Millions	Mar. 31, 2020 JPY (¥)	[1]
Carrying amount	¥ 320,344
The cumulative amount of fair value hedging adjustments included in the carrying amount	24,397
Carrying amount	0
The cumulative amount of fair value hedging adjustments included in the carrying amount	¥ 0

[1] Accumulated fair value hedge adjustments of ¥(1,599) million are included for hedged items for which hedge accounting has been discontinued.