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Share Repurchase Program, Ownership Proportion Maximum, Percent

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Maximum dividends declared during a quarter period for each share of common stock outstanding under a stock repurchase plan.

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Start date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format.

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Amount of stock repurchase plan authorized.

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Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Total Equity - Common Stock Repurchases (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Capital Plans
Repurchases of common stock under our Share Repurchase Program	$ 1,500,000,000	$ 1,180,000,000	$ 3,860,000,000	$ 3,680,000,000
2019 Capital Plan
Capital Plans
Authorized repurchase amount of outstanding common stock	$ 6,000,000,000.0		$ 6,000,000,000.0
Stock repurchase program start date			Jul. 01, 2019
Stock repurchase program expiration date			Jun. 30, 2020
Maximum quarterly common stock dividends per share (USD per share)			$ 0.35
MUFG
Capital Plans
Share Repurchase Program, Ownership Proportion Maximum, Percent			24.90%