Summary of Significant Accounting Policies Retained Deficit (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014
Retained Earnings (Accumulated Deficit) [Abstract]
Cumulative share repurchases	$ 814.3
Cumulative dividends declared	$ 265.4

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