Capital Stock (Tables)

6 Months Ended

Jun. 30, 2026

Share-Based Payment Arrangement [Abstract]

Schedule of Share-Based Compensation Expense

Share-based compensation expense from continuing operations, by expense category, consisted of the following:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2026		2025		2026		2025
	(Amounts in millions)
Share-based compensation expense:
Other operating expense	$	3.4	$	0.9	$	3.9	$	1.7
General and administrative	13.5		4.3		16.2		7.6
Restructuring and other	0.1		2.2		0.1		2.4
	$	17.0	$	7.4	$	20.2	$	11.7