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Income Taxes (Tables)
6 Months Ended
Jun. 30, 2024
Income Tax Disclosure [Abstract]  
Reconciliation of Liability for Uncertain Tax Positions
The following is a reconciliation of the liability for uncertain tax positions (in millions):
Balance at December 31, 2023$233.5 
Additions for tax positions28.8 
Reductions for tax positions(1.4)
Balance at June 30, 2024$260.9