Equity Method Investments (Investees) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Equity Method Investments | |||
| Income from equity method investments | $ 20 | $ (34) | $ (79) |
| MUMSS | |||
| Equity Method Investments | |||
| Voting interest | 40.00% | ||
| Income from equity method investments | $ 105 | $ 123 | $ 93 |
| MUMSS | MUFG | |||
| Equity Method Investments | |||
| Voting interest | 60.00% | ||
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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