| Cover | Jul. 16, 2024 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Jul. 16, 2024 |
| Entity Registrant Name | Morgan Stanley |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-11758 |
| Entity Tax Identification Number | 36-3145972 |
| Entity Address, Address Line One | 1585 Broadway |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10036 |
| City Area Code | 212 |
| Local Phone Number | 761-4000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0000895421 |
| Common Stock, $0.01 par value | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Trading Symbol | MS |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing 1/1,000th interest in a share of Floating Rate Non-Cumulative Preferred Stock, Series A, $0.01 par value | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Non-Cumulative Preferred Stock, Series A, $0.01 par value |
| Trading Symbol | MS/PA |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing 1/1,000th interest in a share of Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series E, $0.01 par value | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Non-Cumulative Preferred Stock, Series E, $0.01 par value |
| Trading Symbol | MS/PE |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing 1/1,000th interest in a share of Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series F, $0.01 par value | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Non-Cumulative Preferred Stock, Series F, $0.01 par value |
| Trading Symbol | MS/PF |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing 1/1,000th interest in a share of Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series I, $0.01 par value | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Non-Cumulative Preferred Stock, Series I, $0.01 par value |
| Trading Symbol | MS/PI |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing 1/1,000th interest in a share of Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series K, $0.01 par value | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Non-Cumulative Preferred Stock, Series K, $0.01 par value |
| Trading Symbol | MS/PK |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing 1/1,000th interest in a share of 4.875% Non-Cumulative Preferred Stock, Series L, $0.01 par value | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Non-Cumulative Preferred Stock, Series L, $0.01 par value |
| Trading Symbol | MS/PL |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing 1/1,000th interest in a share of 4.250% Non-Cumulative Preferred Stock, Series O, $0.01 par value | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Non-Cumulative Preferred Stock, Series O, $0.01 par value |
| Trading Symbol | MS/PO |
| Security Exchange Name | NYSE |
| Depositary Shares, each representing 1/1,000th interest in a share of 6.500% Non-Cumulative Preferred Stock, Series P, $0.01 par value | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Non-Cumulative Preferred Stock, Series P, $0.01 par value |
| Trading Symbol | MS/PP |
| Security Exchange Name | NYSE |
| Global Medium-Term Notes, Series A, Fixed Rate Step-Up Senior Notes Due 2026 of Morgan Stanley Finance LLC (and Registrant’s guarantee with respect thereto) | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Global Medium-Term Notes, Series A, Fixed Rate Step-Up Senior Notes Due 2026 |
| Trading Symbol | MS/26C |
| Security Exchange Name | NYSE |
| Global Medium-Term Notes, Series A, Floating Rate Notes Due 2029 of Morgan Stanley Finance LLC (and Registrant’s guarantee with respect thereto) | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Global Medium-Term Notes, Series A, Floating Rate Notes Due 2029 |
| Trading Symbol | MS/29 |
| Security Exchange Name | NYSE |
