CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CONSOLIDATED STATEMENTS OF INCOME
Net sales	$ 2,572.9	$ 2,956.6
Costs and expenses:
Cost of sales (exclusive of depreciation and amortization shown below)	1,792.2	2,089.7
Warehouse, delivery, selling, general and administrative	522.7	532.1
Depreciation and amortization	57.0	54.0
Impairment of long-lived assets	97.7
Total costs and expenses	2,469.6	2,675.8
Operating income	103.3	280.8
Other expense:
Interest expense	16.9	24.2
Other expense, net	3.3	1.1
Income before income taxes	83.1	255.5
Income tax provision	20.2	63.9
Net income	62.9	191.6
Less: Net income attributable to noncontrolling interests	1.2	1.5
Net income attributable to Reliance	$ 61.7	$ 190.1
Earnings per share attributable to Reliance stockholders:
Diluted (in dollars per share)	$ 0.92	$ 2.80
Basic (in dollars per share)	$ 0.93	$ 2.83
Shares used in computing earnings per share:
Diluted (in shares)	67,248	67,926
Basic (in shares)	66,337	67,127
Cash dividends per share (in dollars per share)	$ 0.625	$ 0.55