CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 206.6	$ 164.8
Other comprehensive income (loss):
Reclassification adjustment transferred to Net income from cash flow hedges	0.4	0.0
Pension and other postretirement benefit costs, net of tax	(0.1)	0.0
Total Comprehensive Income	$ 206.9	$ 164.8