|**Redeemable Noncontrolling Interest (Tables)**               | 9 Months Ended                                                                                                                                                                                                                                                                                                               
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|**Temporary Equity Disclosure [Abstract]**                    |                                                                                                                                                                                                                                                                                                                              
|Redeemable Noncontrolling Interest                            | The table below depicts changes in the Company’s redeemable noncontrolling interest balance.(in millions)Balance, December 31, 2023$—Redeemable noncontrolling interest initial measurement14.4Net income attributable to redeemable noncontrolling interest1.7Redemption value adjustment1.8Balance, September 30, 2024$17.9
|                                                              |                                                                                                                                                                                                                                                                                                                              
|(in millions)                                                 |                                                                                                                                                                                                                                                                                                                              
|Balance, December 31, 2023                                    | $                                                                                                                                                                                                                                                                                                                            
|Redeemable noncontrolling interest initial measurement        | 14.4                                                                                                                                                                                                                                                                                                                         
|Net income attributable to redeemable noncontrolling interest | 1.7                                                                                                                                                                                                                                                                                                                          
|Redemption value adjustment                                   | 1.8                                                                                                                                                                                                                                                                                                                          
|Balance, September 30, 2024                                   | $                                                                                                                                                                                                                                                                                                                            

X- DefinitionTabular disclosure of redeemable noncontrolling interest (as defined) included in the statement of financial position as either a liability or temporary equity. As of the date of the statement of financial position, such redeemable noncontrolling interest is currently redeemable, as defined, for cash or other assets of the entity at (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the entity.
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