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Financial Highlights - Summary of Financial Highlights (Details) (Parenthetical) $ in Thousands	Mar. 31, 2023 USD ($)
Investment Company Financial Highlights [Abstract]
Amount used to multiply asset coverage ratio to determine the asset coverage per unit	$ 1,000

X

- Definition

Amount used to multiply asset coverage ratio to determine the asset coverage per unit.

+ References

No definition available.

+ Details

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Namespace Prefix:	pflt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_InvestmentCompanyFinancialHighlightsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration