CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
CONSOLIDATED STATEMENTS OF INCOME
Net sales	$ 3,880.3	$ 4,681.2	$ 7,845.6	$ 9,167.0
Costs and expenses:
Cost of sales (exclusive of depreciation and amortization shown below)	2,657.6	3,185.8	5,396.9	6,284.5
Warehouse, delivery, selling, general and administrative ("SG&A")	650.6	648.6	1,301.9	1,260.5
Depreciation and amortization	60.8	59.3	121.9	118.4
Total costs and expenses	3,369.0	3,893.7	6,820.7	7,663.4
Operating income	511.3	787.5	1,024.9	1,503.6
Other (income) expense:
Interest expense	9.7	15.6	20.6	31.2
Other (income) expense, net	(9.3)	9.3	(15.1)	12.6
Income before income taxes	510.9	762.6	1,019.4	1,459.8
Income tax provision	124.6	188.7	248.7	361.3
Net income	386.3	573.9	770.7	1,098.5
Less: net income attributable to noncontrolling interests	1.2	1.1	2.5	2.4
Net income attributable to Reliance	$ 385.1	$ 572.8	$ 768.2	$ 1,096.1
Earnings per share attributable to Reliance stockholders:
Basic (in dollars per share)	$ 6.56	$ 9.29	$ 13.07	$ 17.75
Diluted (in dollars per share)	$ 6.49	$ 9.15	$ 12.92	$ 17.49
Shares used in computing earnings per share:
Basic (in shares)	58,688	61,657	58,760	61,744
Diluted (in shares)	59,346	62,594	59,440	62,688