Earnings Per Share - Reconciliation of The Difference Between Basic And Diluted Earnings Per Share (Detail) - JPY (¥) ¥ / shares in Units, shares in Thousands, ¥ in Millions	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Disclosure of reconciliation between basic and diluted earning per share [Abstract]
Net income attributable to Toyota Motor Corporation	¥ 3,848,098	¥ 4,765,086	¥ 4,944,933
Basic earnings per share attributable to Toyota Motor Corporation	3,848,098	4,765,086	4,944,933
Diluted earnings per share attributable to Toyota Motor Corporation	¥ 3,848,098	¥ 4,765,086	¥ 4,944,933
Basic earnings per share attributable to Toyota Motor Corporation	13,033,274	13,252,456	13,512,848
Diluted earnings per share attributable to Toyota Motor Corporation	13,033,274	13,252,456	13,512,848
Basic earnings per share attributable to Toyota Motor Corporation	¥ 295.25	¥ 359.56	¥ 365.94
Diluted earnings per share attributable to Toyota Motor Corporation	¥ 295.25	¥ 359.56	¥ 365.94

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The profit (loss) attributable to ordinary equity holders of the parent entity, adjusted for the effects of all dilutive potential ordinary shares. [Refer: Profit (loss)]

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The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]

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