Document and Entity Information - USD ($)	6 Months Ended
	Jun. 30, 2018	Jul. 23, 2018	Jun. 30, 2017
Entity [Abstract]
Entity Registrant Name	POOL CORP
Entity Central Index Key	0000945841
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 4,704,253,988
Entity Common Stock, Shares Outstanding		40,374,954
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018