Organization and Description of the Business (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Business Acquisition [Line Items]
Repurchase of common stock (in shares)	0	4,147,450
Average price of common stock repurchased (in dollars per share)		$ 24.09
Stock repurchased, net of commissions		$ 100
BrightSphere Investment Group \| Paulson
Business Acquisition [Line Items]
Parent owned interest	21.60%

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration