CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 126.8	$ 106.6	$ 454.3	$ 368.8
Other comprehensive income (loss):
Reclassification adjustment transferred to Net income from cash flow hedges	0.1	0.0	0.5	0.1
Pension and other postretirement benefit costs, net of tax	(0.2)	0.0	(0.4)	0.0
Total Comprehensive Income	$ 126.7	$ 106.6	$ 454.4	$ 368.9