Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Investments in related party investment funds, cost	$ 441.9	$ 891.9
Debt securities, trading, cost	2,099.3	91.4
Short-term investments, cost	1,076.0
Equity securities, trading, cost	4.5
Other long-term investments, cost	443.0	4.0
Related party investments at fair value	$ 258.2	$ 4.0
Common share, shares issued (in shares)	161,929,777	95,582,733
Common share, shares outstanding (in shares)	161,929,777	95,582,733
Series B preference shares
Preference shares, par value (in dollars per share)	$ 0.1	$ 0.1
Preference shares, shares authorized (in shares)	8,000,000	8,000,000
Preference shares, shares issued (in shares)	8,000,000	8,000,000

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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