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Other Income | 9 Months Ended
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Sep. 30, 2021
Other Income [Abstract] |
Other Income | 9. Other Income The table below presents the components of other income (loss) for the periods indicated.
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
|  | (in millions)
Principal transactions |  | $ | (175) |  | $ | 14 |  | $ | 68 |  | $ | 36
Gains (losses) from currency diversification strategy, net |  |  | (3) |  |  | 27 |  |  | (14) |  |  | (6)
Other, net |  |  | 8 |  |  | (12) |  |  | 14 |  |  | (5)
|  | $ | (170) |  | $ | 29 |  | $ | 68 |  | $ | 25
Principal transactions include (1) trading gains and losses from the Company’s remaining market making activities; (2) realized and unrealized gains and losses on financial instruments that (a) are held for purposes other than the Company’s market making activities, (b) are subject to restrictions, or (c) are accounted for under the equity method; and (3) dividends on investments accounted at cost less impairment.

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- Definition The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -URI http://asc.fasb.org/topic&trid=2122503 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 610 -URI http://asc.fasb.org/topic&trid=49130413 + Details
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