Total Equity (Dividends and Share Repurchases) (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Share Repurchase Program | |||||||||||
| Repurchases of common stock | $ 4,860 | $ 3,750 | |||||||||
| Capital Plans | |||||||||||
| Dividends declared per common share | $ 0.3 | $ 0.3 | $ 0.25 | $ 0.25 | $ 0.25 | $ 0.25 | $ 0.2 | $ 0.2 | $ 1.1 | $ 0.9 | $ 0.7 |
| MUFG | |||||||||||
| Share Repurchase Program | |||||||||||
| Share repurchase program description | The sales plan is only intended to maintain MUFG’s ownership percentage below 24.9% in order to comply with MUFG’s passivity commitments to the Board of Governors of the Federal Reserve System and will have no impact on the strategic alliance between MUFG and the Firm, including the joint ventures in Japan. | ||||||||||
| 2018 Capital Plan | |||||||||||
| Capital Plans | |||||||||||
| Authorized repurchase amount of outstanding common stock | $ 4,700 | $ 4,700 | |||||||||
| Stock repurchase program start date | Jul. 01, 2018 | ||||||||||
| Stock repurchase program expiration date | Jun. 30, 2019 | ||||||||||
| Maximum quarterly common stock dividends per share | $ 0.3 | ||||||||||