Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net sales	$ 2,998,097	$ 2,788,188	$ 2,570,803
Cost of sales	2,127,924	1,982,899	1,829,716
Gross profit	870,173	805,289	741,087
Selling and administrative expenses	556,284	520,918	485,228
Operating income	313,889	284,371	255,859
Interest and other non-operating expenses, net	20,896	15,189	14,481
Income before income taxes and equity earnings	292,993	269,182	241,378
Provision for income taxes	58,774	77,982	92,931
Equity earnings in unconsolidated investments, net	242	139	156
Net income	234,461	191,339	148,603
Net loss attributable to noncontrolling interest	0	294	352
Net income attributable to Pool Corporation	$ 234,461	$ 191,633	$ 148,955
Earnings per share:
Basic (in dollars per share)	$ 5.82	$ 4.69	$ 3.56
Diluted (in dollars per share)	$ 5.62	$ 4.51	$ 3.47
Weighted average shares outstanding:
Basic (in shares)	40,311	40,838	41,872
Diluted (in shares)	41,693	42,449	42,984
Cash dividends declared per common share (in dollars per share)	$ 1.72	$ 1.42	$ 1.19