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Other Assets
 6 Months Ended
Jun. 30, 2024
Equity Method Investments and Joint Ventures [Abstract]  
Other Assets Other Assets
Equity Method Investments
$ in millionsAt
June 30,
2024 		At
December 31,
2023
Investments$1,885 $1,915 
 Three Months Ended
June 30,
Six Months Ended
June 30,
$ in millions2024202320242023
Income (loss)$54 $61 $110 $86 
Equity method investments, other than investments in certain fund interests, are summarized above and are included in Other assets in the balance sheet with related income or loss included in Other revenues in the income statement. See “Net Asset Value Measurements—Fund Interests” in Note 4 for the carrying value of certain of the Firm’s fund interests, which are composed of general and limited partnership interests, as well as any related carried interest.
Japanese Securities Joint Venture
 Three Months Ended
June 30,		Six Months Ended
June 30,
$ in millions2024202320242023
Income (loss) from investment in MUMSS$36 $63 $77 $92 
For more information on MUMSS and other relationships with MUFG, see Note 11 to the financial statements in the 2023 Form 10-K.
Tax Equity Investments
The Firm invests in tax equity investment interests which entitle the Firm to a share of tax credits and other income tax benefits generated by the projects underlying the investments.
Effective January 1, 2024, the Firm made an election to account for certain renewable energy and other tax equity investments programs using the proportional amortization method under newly adopted accounting guidance.
Tax Equity Investments under the Proportional Amortization Method
$ in millionsAt
June 30,
2024 		At
December 31,
2023
Low-income housing1
$1,790 $1,699 
Renewable energy and other2
34 — 
Total3
$1,824 $1,699 
1.Amounts include unfunded equity contributions of $637 million and $661 million as of June 30, 2024 and December 31, 2023, respectively. The corresponding liabilities for the commitments to fund these equity contributions are recorded in Other liabilities and accrued expenses. The majority of these commitments are expected to be funded within 5 years.
2.Prior to adoption of the Investments - Tax Credit Structures accounting update on January 1, 2024, Renewable energy and other investments were accounted for under the equity method.
3.At June 30, 2024, this amount excludes $47 million of tax equity investments within programs for which the Firm elected the proportional amortization method that do not meet the conditions to apply the proportional amortization method, which are accounted for as equity method investments.

Income tax credits and other income tax benefits recognized as well as proportional amortization are included in the Provision for income taxes line in the consolidated income statement and in the Depreciation and amortization line in the consolidated cash flow statement.
Net Benefits Attributable to Tax Equity Investments under the Proportional Amortization Method
Three Months Ended
June 30,		Six Months Ended
June 30,
$ in millions2024202320242023
Income tax credits and other income tax benefits$78 $53 $153 $124 
Proportional amortization(59)(50)(119)(99)
Net benefits$19 $3 $34 $25