CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CONSOLIDATED STATEMENTS OF INCOME
Net sales	$ 2,448.3	$ 2,209.7	$ 4,473.6	$ 4,498.0
Costs and expenses:
Cost of sales (exclusive of depreciation and amortization shown below)	1,826.7	1,640.3	3,323.2	3,350.8
Warehouse, delivery, selling, general and administrative	426.0	346.7	783.7	704.4
Depreciation and amortization	50.1	36.5	91.2	72.0
Total costs and expenses	2,302.8	2,023.5	4,198.1	4,127.2
Operating income	145.5	186.2	275.5	370.8
Other income (expense):
Interest	(22.1)	(15.0)	(35.2)	(29.5)
Other (expense) income, net	(0.6)	(3.5)	2.3	3.0
Income before income taxes	122.8	167.7	242.6	344.3
Income tax provision	40.9	57.5	76.2	116.2
Net income	81.9	110.2	166.4	228.1
Less: Net income attributable to noncontrolling interests	0.9	1.4	1.7	3.1
Net income attributable to Reliance	$ 81.0	$ 108.8	$ 164.7	$ 225.0
Earnings per share:
Diluted earnings per common share attributable to Reliance shareholders (in dollars per share)	$ 1.05	$ 1.44	$ 2.13	$ 2.98
Basic earnings per common share attributable to Reliance shareholders (in dollars per share)	$ 1.06	$ 1.45	$ 2.15	$ 3.00
Cash dividends per share (in dollars per share)	$ 0.30	$ 0.15	$ 0.60	$ 0.30