Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2025

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Changes in Accumulated Other Comprehensive Loss by Component

Changes in accumulated other comprehensive loss by component were as follows for the years ended December 31:

(Millions)	2025		2024		2023
Cash flow hedges:
Balance as of beginning of period	$	(0.6)	$	—	$	(30.4)
Change in fair value of interest rate cap, net of tax	(0.1)		(0.6)		—
Change in fair value of interest rate swaps, net of tax	(0.2)		—		—
Amounts reclassified from accumulated other comprehensive loss,    net of tax	(1.0)		—		30.4
Balance as of end of period	(1.9)		(0.6)		—
Interest rate swap termination:
Balance as of beginning of period	—		—		30.4
Amounts reclassified from accumulated other comprehensive loss,    net of tax	—		—		(30.4)
Balance as of end of period	—		—		—
Accumulated other comprehensive loss as of end of period	$	(1.9)	$	(0.6)	$	—