Income Taxes - NOLs (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Federal
Income Taxes
Net operating loss carryforwards	$ 197.7
Net operating losses subject to Section 382 and other restrictions	197.7
State
Income Taxes
Net operating loss carryforwards	897.3
Net operating loss carryforward, Indefinite lived	237.2
Net operating loss carryforward subject to expiration	$ 660.1