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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 621.0	$ 309.1	$ 316.2
Other comprehensive income (loss):
Foreign currency translation gain (loss)	28.8	(5.7)	(51.0)
Unrealized loss on investments, net of tax			(0.4)
Pension and postretirement benefit adjustments, net of tax	4.3	0.7	0.6
Total other comprehensive income (loss)	33.1	(5.0)	(50.8)
Comprehensive income	654.1	304.1	265.4
Less: Comprehensive income attributable to noncontrolling interests	7.6	4.8	4.7
Comprehensive income attributable to Reliance	$ 646.5	$ 299.3	$ 260.7

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