Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning of period balance - gross	$ 0.0	$ 0.0	$ 0.0
Increases for tax positions taken during the current period	4.1	0.0	0.0
Decreases for tax positions taken during a prior period	0.0	0.0	0.0
End of period balance - gross	$ 4.1	$ 0.0	$ 0.0