Summary of Significant Accounting Policies - Retained Earnings (Details) $ in Billions	Sep. 30, 2026 USD ($)
Retained Earnings (Accumulated Deficit) [Abstract]
Cumulative share repurchases	$ 3.3
Cumulative dividends	$ 1.6

Cumulative Share Repurchases since inception of repurchase programs

No definition available.

Name:	pool_CumulativeShareRepurchases
Namespace Prefix:	pool_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant