CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 296.0	$ 394.4	$ 1,066.7	$ 1,492.9
Other comprehensive (loss) income:
Foreign currency translation loss	(11.9)	(32.0)	(10.7)	(51.3)
Postretirement benefit plan adjustments, net of tax	(0.9)	6.4	(2.4)	6.3
Total other comprehensive loss	(12.8)	(25.6)	(13.1)	(45.0)
Comprehensive income	283.2	368.8	1,053.6	1,447.9
Less: comprehensive income attributable to noncontrolling interests	1.0	0.9	3.5	3.3
Comprehensive income attributable to Reliance	$ 282.2	$ 367.9	$ 1,050.1	$ 1,444.6