CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income	$ 315.0	$ 290.5	$ 295.7
Other comprehensive income:
Reclassification adjustment transferred to Net income from cash flow hedges	0.9	0.8	0.9
Pension and other postretirement benefit costs, net of tax	6.3	0.5	3.2
Total Comprehensive Income	$ 322.2	$ 291.8	$ 299.8