CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 706.1	$ 641.8	$ 621.0
Other comprehensive (loss) income:
Foreign currency translation gain (loss)	12.4	(25.7)	28.8
Pension and postretirement benefit adjustments, net of tax	(14.8)	0.1	4.3
Total other comprehensive (loss) income	(2.4)	(25.6)	33.1
Comprehensive income	703.7	616.2	654.1
Less: Comprehensive income attributable to noncontrolling interests	4.6	8.1	7.6
Comprehensive income attributable to Reliance	$ 699.1	$ 608.1	$ 646.5