Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Feb. 18, 2022	Jun. 30, 2021
Cover [Abstract]
Amendment Flag	false
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000945841
Document Type	10-K
Document Period End Date	Dec. 31, 2021
Entity File Number	0-26640
Entity Registrant Name	POOL CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-3943363
Entity Address, Address Line One	109 Northpark Boulevard,
Entity Address, City or Town	Covington,
Entity Address, State or Province	LA
Entity Address, Postal Zip Code	70433-5001
City Area Code	(985)
Local Phone Number	892-5521
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	POOL
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 17,838,608,341
Entity Common Stock, Shares Outstanding		40,168,103
Documents Incorporated by Reference	Portions of the registrant’s Proxy Statement for the Annual Meeting of Stockholders are incorporated by reference in Part III of this Form 10-K.
Document Transition Report	false
Document Annual Report	true
ICFR Auditor Attestation Flag	true