v3.10.0.1

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Investments measured at fair value | $ 1,174.8 | $ 2,315.3
Class A |  |
Common stock, nominal value (in dollars per share) | $ 0.01 | $ 0.01
Common stock, issued (in shares) | 204,450,499 | 219,668,579
Common stock, outstanding (in shares) | 204,450,499 | 219,668,579
Class B |  |
Common stock, nominal value (in dollars per share) | $ 0.01 | $ 0.01
Common stock, issued (in shares) | 11,099,593 | 11,102,619
Common stock, outstanding (in shares) | 11,099,593 | 11,102,619
Class C |  |
Common stock, nominal value (in dollars per share) | $ 0.01 | $ 0.01
Common stock, issued (in shares) | 531,174,389 | 584,332,055
Common stock, outstanding (in shares) | 531,174,389 | 584,332,055

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