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Related Party Transactions - Narrative (Details)
$ in Millions

12 Months Ended

Dec. 31, 2022

USD ($)

Dec. 31, 2021

USD ($)

Dec. 31, 2020

USD ($)

Related Party Transaction [Line Items]

Plus component of annual investment management fee

0.25

Annual fee cap

0.15

Privately-held Investments

^[1]

$ 533.0

$ 307.1

Other investments, at fair value (2)

^[2]

221.3

151.3

Asset Management Arrangement

Related Party Transaction [Line Items]

Related party fees

5.8

$ 5.3

Asset Management Arrangement | Investment Income

Related Party Transaction [Line Items]

Related party fees

4.9

Management Consulting Agreement

Related Party Transaction [Line Items]

Related party fees

5.0

$ 5.0

Management Consulting Agreement | General, administrative and corporate expenses

Related Party Transaction [Line Items]

Related party fees

5.0

Apollo originating partnership | Gain (Loss) on Investments

Related Party Transaction [Line Items]

Related party fees

1.5

Beneficial owner

Related Party Transaction [Line Items]

Intercompany balance payable

2.0

0.6

Apollo real estate fund | Fair Value, Recurring [Member]

Related Party Transaction [Line Items]

Other investments, at fair value (2)

25.3

Apollo originating partnership | Fair Value, Recurring [Member]

Related Party Transaction [Line Items]

Privately-held Investments

44.8

Other investments, at fair value (2)

12.7

Apollo originating partnership, class A notes | Privately-held investments

Related Party Transaction [Line Items]

Privately-held investment, losses incurred

(0.2)

Apollo originating partnership, class A notes | Fair Value, Recurring [Member]

Related Party Transaction [Line Items]

Privately-held Investments

30.0

Apollo originating partnership, class B notes | Privately-held investments

Related Party Transaction [Line Items]

Privately-held investment, losses incurred

(0.2)

Apollo originating partnership, class B notes | Fair Value, Recurring [Member]

Related Party Transaction [Line Items]

Privately-held Investments

$ 14.8

Apollo, Class A & B Notes | Privately-held investments

Related Party Transaction [Line Items]

Privately-held investment, losses incurred

$ 0.0

Maximum

Related Party Transaction [Line Items]

Percentage of consolidated group's net income due to Apollo Management

1.00%

Fees due to Apollo Management

$ 5.0

[1]	Privately-held investments includes related party investments totaling $44.8 million.
[2]	Other investments includes related party investments of $25.3 million in Apollo Real Estate Fund and $12.7 million in Apollo Origination Partnership. (3)    Cash and cash equivalents includes restricted cash of $232.1 million (2021 — $364.9 million) which are held in trusts.

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