CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 150.3	$ 99.0	$ 554.5	$ 317.2
Other comprehensive income (loss):
Foreign currency translation gain (loss)	2.6	10.5	(11.5)	24.5
Pension and postretirement benefit adjustments, net of tax				2.3
Total other comprehensive income (loss)	2.6	10.5	(11.5)	26.8
Comprehensive income	152.9	109.5	543.0	344.0
Less: Comprehensive income attributable to noncontrolling interests	2.0	1.7	6.4	5.2
Comprehensive income attributable to Reliance	$ 150.9	$ 107.8	$ 536.6	$ 338.8