Unusual Items (Tables)

9 Months Ended

Sep. 30, 2022

Unusual or Infrequent Items, or Both [Abstract]

Summary of Unusual Items Expense

The following table presents total unusual items in the unaudited condensed consolidated statements of operations:

	Three months ended September 30,				Nine months ended September 30,
	2022		2021		2022		2021
	(In millions)
Unusual items
Legal matters (component of other expense, net)	$	(0.4)	$	—	$	15.7	$	—
Proxy contest and related litigation costs (component of other expense, net)	16.3		—		28.3		—
Terminated merger costs (component of other expense, net)	—		7.2		2.5		20.8
Loss on debt	22.7		0.9		22.7		10.5
	$	38.6	$	8.1	$	69.2	$	31.3