v3.26.1
Property, Plant and Equipment - Additional information (Detail) - Vehicles And Equipment On Operating Leases [Member] - JPY (¥)
¥ in Millions
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Disclosure of detailed information about property, plant and equipment [line items]      
Right of use assets ¥ 5,546,865 ¥ 4,664,376  
Additions to right-of-use assets 2,654,403 2,909,058  
Depreciation of right of use assets 658,046 617,495 ¥ 612,569
Income from subleasing right-of-use assets ¥ 1,101,911 ¥ 1,008,634 ¥ 947,058