CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
CONSOLIDATED STATEMENTS OF INCOME
Net sales	$ 2,475.2	$ 2,203.9	$ 4,894.5	$ 4,366.6
Costs and expenses:
Cost of sales (exclusive of depreciation and amortization shown below)	1,773.1	1,518.8	3,470.8	3,044.8
Warehouse, delivery, selling, general and administrative	475.9	455.2	952.1	904.7
Depreciation and amortization	55.0	55.5	110.2	111.6
Total costs and expenses	2,304.0	2,029.5	4,533.1	4,061.1
Operating income	171.2	174.4	361.4	305.5
Other expense:
Interest expense	18.5	21.7	35.8	43.4
Other expense, net	0.3	1.1	4.7	1.3
Income before income taxes	152.4	151.6	320.9	260.8
Income tax provision	47.6	49.5	102.7	65.2
Net income	104.8	102.1	218.2	195.6
Less: Net income attributable to noncontrolling interests	1.8	1.2	3.5	2.5
Net income attributable to Reliance	$ 103.0	$ 100.9	$ 214.7	$ 193.1
Earnings per share attributable to Reliance stockholders:
Diluted earnings per common share (in dollars per share)	$ 1.40	$ 1.38	$ 2.92	$ 2.65
Basic earnings per common share (in dollars per share)	1.41	1.39	2.95	2.68
Cash dividends per share (in dollars per share)	$ 0.45	$ 0.40	$ 0.90	$ 0.80