| Cover Page - USD ($) $ in Billions | 12 Months Ended | ||
| Dec. 31, 2020 | Mar. 31, 2021 | Jun. 30, 2020 | |
| Document Information [Line Items] | |||
| Entity Incorporation, State or Country Code | D0 | ||
| Entity Registrant Name | ATHENE HOLDING LTD | ||
| Entity Address, Address Line One | Second Floor, Washington House | ||
| Entity Address, City or Town | Hamilton | ||
| Entity Address, Postal Zip Code | HM 11 | ||
| Entity Address, Country | BM | ||
| City Area Code | 441 | ||
| Local Phone Number | 279-8400 | ||
| Entity Interactive Data Current | Yes | ||
| Entity Central Index Key | 0001527469 | ||
| Entity Filer Category | Large Accelerated Filer | ||
| Entity Emerging Growth Company | false | ||
| Entity Small Business | false | ||
| Document Type | 10-K/A | ||
| Document Annual Report | true | ||
| Document Period End Date | Dec. 31, 2020 | ||
| Document Transition Report | false | ||
| Entity File Number | 001-37963 | ||
| Document Fiscal Year Focus | 2020 | ||
| Document Fiscal Period Focus | FY | ||
| Current Fiscal Year End Date | --12-31 | ||
| Amendment Flag | true | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 6 | ||
| Entity Well-known Seasoned Issuer | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Common Stock, Shares Outstanding | 191,724,549 | ||
| Entity Tax Identification Number | 98-0630022 | ||
| ICFR Auditor Attestation Flag | true | ||
| Entity Address, Address Line Two | 16 Church Street | ||
| Amendment Description | We are amending our Annual Report on Form 10-K for the year ended December 31, 2020 (“2020 Annual Report”), as filed with the United States Securities and Exchange Commission (“SEC”) on February 19, 2021, to update Part III and include the additional information required. This amendment only includes the changes to Part III and the additional Exhibits listed in Part IV and does not reflect any events occurring after the filing of the Form 10-K.On March 8, 2021, we entered into an Agreement and Plan of Merger (“Merger Agreement”), by and among the Company, Apollo Global Management, Inc., a Delaware corporation (“AGM”), Tango Holdings, Inc., a Delaware corporation and a direct wholly owned subsidiary of AGM (“HoldCo”), Blue Merger Sub, Ltd., a Bermuda exempted company and a direct wholly owned subsidiary of HoldCo (“Company Merger Sub”), and Green Merger Sub, Inc., a Delaware corporation and a direct, wholly owned subsidiary of HoldCo (“AGM Merger Sub”). The Company and AGM have agreed, subject to the terms and conditions of the Merger Agreement, to effect an all-stock merger transaction to combine their respective businesses by: (1) AGM merging with AGM Merger Sub, with AGM surviving such merger as a direct wholly owned subsidiary of HoldCo (“AGM Merger”), (2) the Company merging with Company Merger Sub, with the Company surviving such merger as a direct, wholly owned subsidiary of HoldCo (“Company Merger” and, together with the AGM Merger, “Mergers”), and (3) as of the effective time of the Mergers (“Effective Time”), changing the name of HoldCo to be Apollo Global Management, Inc.Due to the proposed Mergers, we expect to delay our 2021 annual general meeting of shareholders until a later date to be announced. | ||
| Common Class A [Member] | |||
| Document Information [Line Items] | |||
| Title of 12(b) Security | Class A common shares, par value $0.001 per share | ||
| Trading Symbol | ATH | ||
| Security Exchange Name | NYSE | ||
| Series A Preferred Stock [Member] | |||
| Document Information [Line Items] | |||
| Title of 12(b) Security | 6.35% Fixed-to-Floating Rate Perpetual Non-Cumulative Preference Share, Series A | ||
| Trading Symbol | ATHPrA | ||
| Security Exchange Name | NYSE | ||
| Series B Preferred Stock [Member] | |||
| Document Information [Line Items] | |||
| Title of 12(b) Security | 5.625% Fixed-Rate Perpetual Non-Cumulative Preference Share, Series B | ||
| Trading Symbol | ATHPrB | ||
| Security Exchange Name | NYSE | ||
| Series C Preferred Stock [Member] | |||
| Document Information [Line Items] | |||
| Title of 12(b) Security | 6.375% Fixed-Rate Reset Perpetual Non-Cumulative Preference Share, Series C | ||
| Trading Symbol | ATHPrC | ||
| Security Exchange Name | NYSE | ||
| Series D Preferred Stock | |||
| Document Information [Line Items] | |||
| Title of 12(b) Security | 4.875% Fixed-Rate Perpetual Non-Cumulative Preference Share, Series D | ||
| Trading Symbol | ATHPrD | ||
| Security Exchange Name | NYSE |
