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Earnings Per Share - Summary of Shareholders' Equity Per Share (Detail) - JPY (¥)
¥ / shares in Units, shares in Thousands, ¥ in Millions
Mar. 31, 2025
Mar. 31, 2024
Disclosure of shareholders equity per share [Abstract]    
Toyota Motor Corporation shareholders' equity ¥ 35,924,826 ¥ 34,220,991
Common shares issued and outstanding at the end of the year (excluding treasury stock) 13,048,930 13,474,172
Toyota Motor Corporation shareholders' equity per share ¥ 2,753.09 ¥ 2,539.75