| Document and Entity Information | Oct. 28, 2019 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001411494 |
| Document Type | 8-K |
| Document Period End Date | Oct. 28, 2019 |
| Entity Registrant Name | Apollo Global Management, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-35107 |
| Entity Tax Identification Number | 20-8880053 |
| Entity Address, Address Line One | 9 West 57th Street |
| Entity Address, Address Line Two | 43rd Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10019 |
| City Area Code | (212) |
| Local Phone Number | 515-3200 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Class A [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A Common Stock |
| Trading Symbol | APO |
| Security Exchange Name | NYSE |
| Series A Preferred Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 6.375% Series A Preferred Stock |
| Trading Symbol | APO.PR A |
| Security Exchange Name | NYSE |
| Series B Preferred Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 6.375% Series B Preferred Stock |
| Trading Symbol | APO.PR B |
| Security Exchange Name | NYSE |
