Summary of Significant Accounting Policies	6 Months Ended
Jun. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1 – Summary of Significant Accounting Policies 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. Through June 29, 2017, we owned a 60% interest in Pool Systems Pty. Ltd. (PSL), an Australian company. Our ownership percentage constituted a controlling interest in the acquired company, which required us to consolidate PSL’s financial position and results of operations from the date of acquisition. On June 29, 2017, we purchased the remaining 40% interest in PSL. Thus, we will continue to consolidate PSL, but there will no longer be a separate noncontrolling interest reported on our Consolidated Statements of Income, nor Redeemable noncontrolling interest reported on our Consolidated Balance Sheets. Please see Note 6 - Redeemable Noncontrolling Interest for additional information regarding this transaction. The 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. A description of our significant accounting policies is included in our 2016 Annual Report on Form 10-K. You should read the interim Consolidated Financial Statements in conjunction with the Consolidated Financial Statements and accompanying notes in our Annual Report. The results for our three and six month periods ended June 30, 2017 are not necessarily indicative of the expected results for our fiscal year ending December 31, 2017. Variable Interest Entity In February 2015, we entered into a five-year credit agreement with a swimming pool retailer. Under this agreement and the related revolving note, we are the primary lender of operating funds for this entity. The total lending commitment under the credit agreement is $8.5 million, which is fully funded. As of June 30, 2017, the estimated realizable amount under the credit agreement is recorded within Other assets on our Consolidated Balance Sheets and is collateralized by essentially all of the assets of the business. We have a variable interest in this entity; however, we have no decision-making authority over its activities through voting or other rights. Additionally, we have no obligation to absorb any of its losses, nor do we have the right to receive any residual returns, should either occur. We are not considered the primary beneficiary of this variable interest entity, and therefore we are not required to consolidate this entity’s financial statements. Retained Deficit We account for the retirement of treasury shares as a reduction of retained earnings (deficit). As of June 30, 2017, the Retained deficit on our Consolidated Balance Sheets reflects cumulative net income, the cumulative impact of adjustments for changes in accounting pronouncements, treasury share retirements since the inception of our share repurchase programs of $1,102.0 million and cumulative dividends of $395.9 million. Newly Adopted Accounting Pronouncements Effective January 1, 2017, we adopted Accounting Standards Update (ASU) 2016-09, Improvements to Employee Share-Based Payment Accounting, on a prospective basis and as such, our prior year presentation has not changed. The provisions of this update simplify many key aspects of the accounting for and cash flow presentation of employee share-based compensation transactions, including accounting for income taxes, forfeitures, and statutory withholding requirements. In accordance with the new guidance, we now record all excess tax benefits or tax deficiencies as a component of our Provision for income taxes on our Consolidated Statements of Income. As a result of the adoption, we recognized $7.4 million of excess tax benefits in the first half of 2017, which reduced our Provision for income taxes and positively impacted our Net income. Historically, these amounts were recorded as Additional paid in capital in stockholders’ equity on our Consolidated Balance Sheets. Additionally, we now present excess tax benefits or deficiencies as operating cash flows versus reclassifying the amount out of operating cash flows and presenting it in financing activities on the Condensed Consolidated Statements of Cash Flows. Additional amendments from this guidance related to forfeitures and minimum statutory withholding tax requirements had no impact to our financial position, results of operations or cash flows. As permitted, we continue to estimate forfeitures to determine the amount of compensation cost to be recognized each period rather than electing to account for forfeitures as they occur, and we continue to present the value of shares withheld for minimum statutory tax withholding requirements on the Condensed Consolidated Statements of Cash Flows as a financing activity. Another impact of the adoption is that the calculation of the effect of dilutive securities now excludes any derived excess tax benefits or deficiencies from assumed future proceeds, resulting in an increase in diluted weighted average shares outstanding of approximately 550,000 shares for the three and six month periods ended June 30, 2017. Effective January 1, 2017, we adopted ASU 2015-17, Balance Sheet Classification of Deferred Taxes, which requires we classify all deferred tax assets and liabilities as noncurrent on the balance sheet rather than separately presenting net deferred tax assets or liabilities as current or noncurrent. Additionally, we no longer allocate valuation allowances between current and noncurrent deferred tax assets because those allowances are also now classified as noncurrent. As permitted, we elected to adopt this guidance on a prospective basis and as such, our prior year presentation has not changed. The adoption of ASU 2015-17 did not have a material impact on our financial position, results of operations and related disclosures. In January 2017, we adopted ASU 2015-11, Inventory (Topic 330): Simplifying the Measurement of Inventory, which requires that we measure inventory at the lower of cost or net realizable value rather than at the lower of cost or market. Net realizable value is the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal and transportation. The adoption of ASU 2015-11 did not have a material impact on our financial position, results of operations and related disclosures. In January 2017, we adopted ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments, which eliminates the requirement that an acquirer in a business combination account for measurement-period adjustments retrospectively. Instead, an acquirer will recognize a measurement-period adjustment during the period in which it determines the amount of the adjustment. The adoption of ASU 2015-16 did not have a material impact on our financial position, results of operations and related disclosures.

Note 1 – Summary of Significant Accounting Policies

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.

Through June 29, 2017, we owned a 60% interest in Pool Systems Pty. Ltd. (PSL), an Australian company. Our ownership percentage constituted a controlling interest in the acquired company, which required us to consolidate PSL’s financial position and results of operations from the date of acquisition. On June 29, 2017, we purchased the remaining 40% interest in PSL. Thus, we will continue to consolidate PSL, but there will no longer be a separate noncontrolling interest reported on our Consolidated Statements of Income, nor Redeemable noncontrolling interest reported on our Consolidated Balance Sheets. Please see Note 6 - Redeemable Noncontrolling Interest for additional information regarding this transaction.

The 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.

A description of our significant accounting policies is included in our 2016 Annual Report on Form 10-K. You should read the interim Consolidated Financial Statements in conjunction with the Consolidated Financial Statements and accompanying notes in our Annual Report. The results for our three and six month periods ended June 30, 2017 are not necessarily indicative of the expected results for our fiscal year ending December 31, 2017.

Variable Interest Entity

In February 2015, we entered into a five-year credit agreement with a swimming pool retailer. Under this agreement and the related revolving note, we are the primary lender of operating funds for this entity. The total lending commitment under the credit agreement is $8.5 million, which is fully funded. As of June 30, 2017, the estimated realizable amount under the credit agreement is recorded within Other assets on our Consolidated Balance Sheets and is collateralized by essentially all of the assets of the business. We have a variable interest in this entity; however, we have no decision-making authority over its activities through voting or other rights. Additionally, we have no obligation to absorb any of its losses, nor do we have the right to receive any residual returns, should either occur. We are not considered the primary beneficiary of this variable interest entity, and therefore we are not required to consolidate this entity’s financial statements.

Retained Deficit

We account for the retirement of treasury shares as a reduction of retained earnings (deficit). As of June 30, 2017, the Retained deficit on our Consolidated Balance Sheets reflects cumulative net income, the cumulative impact of adjustments for changes in accounting pronouncements, treasury share retirements since the inception of our share repurchase programs of $1,102.0 million and cumulative dividends of $395.9 million.

Newly Adopted Accounting Pronouncements

Effective January 1, 2017, we adopted Accounting Standards Update (ASU) 2016-09, Improvements to Employee Share-Based Payment Accounting, on a prospective basis and as such, our prior year presentation has not changed. The provisions of this update simplify many key aspects of the accounting for and cash flow presentation of employee share-based compensation transactions, including accounting for income taxes, forfeitures, and statutory withholding requirements. In accordance with the new guidance, we now record all excess tax benefits or tax deficiencies as a component of our Provision for income taxes on our Consolidated Statements of Income. As a result of the adoption, we recognized $7.4 million of excess tax benefits in the first half of 2017, which reduced our Provision for income taxes and positively impacted our Net income. Historically, these amounts were recorded as Additional paid in capital in stockholders’ equity on our Consolidated Balance Sheets. Additionally, we now present excess tax benefits or deficiencies as operating cash flows versus reclassifying the amount out of operating cash flows and presenting it in financing activities on the Condensed Consolidated Statements of Cash Flows.

Additional amendments from this guidance related to forfeitures and minimum statutory withholding tax requirements had no impact to our financial position, results of operations or cash flows. As permitted, we continue to estimate forfeitures to determine the amount of compensation cost to be recognized each period rather than electing to account for forfeitures as they occur, and we continue to present the value of shares withheld for minimum statutory tax withholding requirements on the Condensed Consolidated Statements of Cash Flows as a financing activity. Another impact of the adoption is that the calculation of the effect of dilutive securities now excludes any derived excess tax benefits or deficiencies from assumed future proceeds, resulting in an increase in diluted weighted average shares outstanding of approximately 550,000 shares for the three and six month periods ended June 30, 2017.

Effective January 1, 2017, we adopted ASU 2015-17, Balance Sheet Classification of Deferred Taxes, which requires we classify all deferred tax assets and liabilities as noncurrent on the balance sheet rather than separately presenting net deferred tax assets or liabilities as current or noncurrent. Additionally, we no longer allocate valuation allowances between current and noncurrent deferred tax assets because those allowances are also now classified as noncurrent. As permitted, we elected to adopt this guidance on a prospective basis and as such, our prior year presentation has not changed. The adoption of ASU 2015-17 did not have a material impact on our financial position, results of operations and related disclosures.

In January 2017, we adopted ASU 2015-11, Inventory (Topic 330): Simplifying the Measurement of Inventory, which requires that we measure inventory at the lower of cost or net realizable value rather than at the lower of cost or market. Net realizable value is the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal and transportation. The adoption of ASU 2015-11 did not have a material impact on our financial position, results of operations and related disclosures.

In January 2017, we adopted ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments, which eliminates the requirement that an acquirer in a business combination account for measurement-period adjustments retrospectively. Instead, an acquirer will recognize a measurement-period adjustment during the period in which it determines the amount of the adjustment. The adoption of ASU 2015-16 did not have a material impact on our financial position, results of operations and related disclosures.