Summary of Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2023
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Pool Corporation (the Company, which may be referred to as we, us or our) prepared the unaudited interim Consolidated Financial Statements following U.S. generally accepted accounting principles (GAAP) and the requirements of the Securities and Exchange Commission (SEC) for interim financial information. As permitted under those rules, we have condensed or omitted certain footnotes and other financial information required for complete financial statements. The interim Consolidated Financial Statements include all normal and recurring adjustments that are necessary for a fair presentation of our financial position and operating results. All significant intercompany accounts and intercompany transactions have been eliminated.
Newly Adopted Accounting Pronouncements	Newly Adopted Accounting PronouncementsIn conjunction with our debt amendments discussed further in Note 5, we adopted Accounting Standards Update (ASU) 2020-04, Reference Rate Reform (Topic 848), Facilitation of the Effects of Reference Rate Reform on Financial Reporting, and all related amendments, which are codified into Accounting Standards Codification (ASC) 848 as of June 30, 2023. This standard provides optional expedients and exceptions for applying GAAP to transactions affected by reference rate reform if certain criteria are met. These transactions include contract modifications, hedging relationships and sale or transfer of debt securities classified as held-to-maturity. The adoption of this standard did not have a material impact on our consolidated financial statements or related disclosures, and we do not expect a material impact in future periods.
Income Taxes	We reduce federal and state income taxes payable by the tax benefits associated with the exercise of nonqualified stock options and the lapse of restrictions on restricted stock awards. To the extent realized tax deductions exceed the amount of previously recognized deferred tax benefits related to share-based compensation, we record an excess tax benefit. We record all excess tax benefits as a component of income tax benefit or expense on the Consolidated Statements of Income in the period in which stock options are exercised or restrictions on restricted stock awards lapse.
Retained Earnings	We account for the retirement of treasury shares as a reduction of Retained earnings.

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2023

Basis of Presentation and Principles of Consolidation

Pool Corporation (the Company, which may be referred to as we, us or our) prepared the unaudited interim Consolidated Financial Statements following U.S. generally accepted accounting principles (GAAP) and the requirements of the Securities and Exchange Commission (SEC) for interim financial information. As permitted under those rules, we have condensed or omitted certain footnotes and other financial information required for complete financial statements.

The interim Consolidated Financial Statements include all normal and recurring adjustments that are necessary for a fair presentation of our financial position and operating results. All significant intercompany accounts and intercompany transactions have been eliminated.

Newly Adopted Accounting Pronouncements

Newly Adopted Accounting PronouncementsIn conjunction with our debt amendments discussed further in Note 5, we adopted Accounting Standards Update (ASU) 2020-04, Reference Rate Reform (Topic 848), Facilitation of the Effects of Reference Rate Reform on Financial Reporting, and all related amendments, which are codified into Accounting Standards Codification (ASC) 848 as of June 30, 2023. This standard provides optional expedients and exceptions for applying GAAP to transactions affected by reference rate reform if certain criteria are met. These transactions include contract modifications, hedging relationships and sale or transfer of debt securities classified as held-to-maturity. The adoption of this standard did not have a material impact on our consolidated financial statements or related disclosures, and we do not expect a material impact in future periods.

Income Taxes

We reduce federal and state income taxes payable by the tax benefits associated with the exercise of nonqualified stock options and the lapse of restrictions on restricted stock awards. To the extent realized tax deductions exceed the amount of previously recognized deferred tax benefits related to share-based compensation, we record an excess tax benefit. We record all excess tax benefits as a component of income tax benefit or expense on the Consolidated Statements of Income in the period in which stock options are exercised or restrictions on restricted stock awards lapse.

Retained Earnings

We account for the retirement of treasury shares as a reduction of Retained earnings.