v3.26.1
Long-term borrowings - Maturities of long-term borrowings (Detail)
¥ in Millions
Mar. 31, 2026
JPY (¥)
Long-Term Debt, Fiscal Year Maturity [Abstract]  
2027 ¥ 1,431,899
2028 1,759,717
2029 1,862,534
2030 1,754,773
2031 1,973,293
2032 and thereafter 6,217,371
Parent Company [Member]  
Long-Term Debt, Fiscal Year Maturity [Abstract]  
2027 604,160
2028 723,219
2029 850,192
2030 821,267
2031 890,021
2032 and thereafter 1,756,238
Total ¥ 5,645,097