485BPOS

Registration No. 033-59474

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D. C. 20549

- - - - - - -

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

POST-EFFECTIVE AMENDMENT NO. 255

and

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940

AMENDMENT NO. 255

- - - - - - -

PRINCIPAL FUNDS, INC.

(Exact name of Registrant as specified in Charter)

711 High Street

Des Moines, IA 50392

(Address of principal executive offices)

- - - - - - -

Telephone Number (515) 235-1209

- - - - - - -

BRITNEY L. SCHNATHORST

The Principal Financial Group

Des Moines, Iowa 50392

(Name and address of agent for service)

----------

Approximate Date of Proposed Public Offering: Immediately

It is proposed that this filing will become effective (check appropriate box)

XX    immediately upon filing pursuant to paragraph (b)

____    on (date) pursuant to paragraph (b)

____    60 days after filing pursuant to paragraph (a)

____    on (date) pursuant to paragraph (a)

____    75 days after filing pursuant to paragraph (a)(2)

____    on (date) pursuant to paragraph (a)(2) of Rule 485

If appropriate, check the following box:

____ This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

Title of Securities Being Registered: Class J shares.

EXPLANATORY NOTE

This filing relates to the Registrant’s prospectus dated September 11, 2018 for the addition of Class J shares to the Equity Income Fund. which was included in post-effective amendment number 254 (as filed on September 10, 2018, SEC Accession No. 0000898745-18-000667), and is filed for the purpose of submitting interactive data files.

SIGNATURES
Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Fund certifies that it meets all of the requirements for effectiveness of this registration statement under rule 485(b) under the Securities Act and  has duly caused this registration statement to be signed on its behalf by the undersigned, duly authorized, in the city of Des Moines and State of Iowa, on the 28th day of September, 2018.
	Principal Funds, Inc.    (Registrant) /s/ M. J. Beer _____________________________________ M. J. Beer Director, President and Chief Executive Officer
Attest: /s/ Beth Wilson ______________________________________ Beth Wilson Vice President and Secretary

Pursuant to the requirements of the Securities Act of 1933, this Amendment to the Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.
Signature	Title	Date
/s/ M. J. Beer __________________________ M. J. Beer	Director, President and Chief Executive Officer (Principal Executive Officer)	September 28, 2018
/s/ T. W. Bollin __________________________ T. W. Bollin	Chief Financial Officer (Principal Financial Officer)	September 28, 2018
/s/ S. L. Reece __________________________ S. L. Reece	Vice President and Controller (Controller)	September 28, 2018
(E. Ballantine)* __________________________ E. Ballantine	Director	September 28, 2018
(L. T. Barnes)* __________________________ L. T. Barnes	Director	September 28, 2018
(C. Damos)* __________________________ C. Damos	Director	September 28, 2018
(N. M. Everett)* __________________________ N. M. Everett	Chair	September 28, 2018
(M. A. Grimmett)* __________________________ M. A. Grimmett	Director	September 28, 2018
(P. G. Halter)* __________________________ P. G. Halter	Director	September 28, 2018
(F. S. Hirsch)* __________________________ F. S. Hirsch	Director	September 28, 2018
(T. Huang)* __________________________ T. Huang	Director	September 28, 2018
(K. McMillan)* __________________________ K. McMillan	Director	September 28, 2018
(E. Nickels)* __________________________ E. Nickels	Director	September 28, 2018
(M. M. VanDeWeghe)* __________________________ M. M. VanDeWeghe	Director	September 28, 2018
* Pursuant to Power of Attorney appointing M. J. Beer Previously filed as Ex-99(j)(3) on 12/29/2014 (Accession No. 000898745-14-001274); filed for E. Nickels as Ex-99(j)(3) on 12/21/2015 (Accession No. 0000898745-15-000800); filed for P. G. Halter as Ex-99(j)(3) on 12/15/2017 (Accession No. 0000898745-17-001335); and filed for M. M. VanDeWeghe as Ex-99(j)(3) on 06/13/2018 (Accession No. 0000898745-18-000440).

Exhibit No.	Exhibits
Ex-101.INS	XBRL Instance Document
Ex-101.SCH	XBRL Taxonomy Extension Schema Document
Ex-101.CAL	XBRL Taxonomy Extension Calculations Linkbase Document
Ex-101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
Ex-101.LAB	XBRL Taxonomy Extension Label Linkbase Document
Ex-101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

XML

PFI Prospectus | Equity Income Fund [Member]

EQUITY INCOME FUND

Objective:

The Fund seeks to provide current income and long-term growth of income and capital.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees	Total
Maximum Deferred Sales Charge (as a percentage) | PFI Prospectus | Equity Income Fund [Member] | Equity Income Fund, Class J Shares [Member]	1.00%

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	PFI Prospectus Equity Income Fund [Member] Equity Income Fund, Class J Shares [Member]
Management Fees (as a percentage of Assets)	0.51%
Distribution and Service (12b-1) Fees	0.15%
Other Expenses (as a percentage of Assets):	0.18%	[1]
Net Expenses (as a percentage of Assets)	0.84%

Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. The calculation of costs takes into account any applicable contractual fee waivers and/or expense reimbursements for the period noted in the table above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years	Expense Example, with Redemption, 5 Years	Expense Example, with Redemption, 10 Years
PFI Prospectus | Equity Income Fund [Member] | Equity Income Fund, Class J Shares [Member] | USD ($)	186	268	466	1,037

You would pay the following expenses if you did not redeem your shares:

Expense Example, No Redemption	Expense Example, No Redemption, 1 Year	Expense Example, No Redemption, 3 Years	Expense Example, No Redemption, 5 Years	Expense Example, No Redemption, 10 Years
PFI Prospectus | Equity Income Fund [Member] | Equity Income Fund, Class J Shares [Member] | USD ($)	86	268	466	1,037

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 23.3% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in dividend-paying equity securities at the time of purchase. The Fund usually invests in equity securities of companies with large and medium market capitalizations. The Fund invests in value equity securities, an investment strategy that emphasizes buying equity securities that appear to be undervalued. The Fund also invests in real estate investment trusts and securities of foreign issuers.

Principal Risks

The value of your investment in the Fund changes with the value of the Fund's investments. Many factors affect that value, and it is possible to lose money by investing in the Fund. An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The principal risks of investing in the Fund, in alphabetical order, are:

Equity Securities Risk. The value of equity securities could decline if the issuer's financial condition declines or in response to overall market and economic conditions. A fund's principal market segment(s) (such as market capitalization or style) may underperform other market segments or the equity markets as a whole.

• Medium Market Capitalization Companies Risk. Investments in medium sized companies may involve greater risk and price volatility than investments in larger, more mature companies.

• Value Stock Risk. Value stocks may continue to be undervalued by the market for extended periods, including the entire period during which the stock is held by a fund, or the events that would cause the stock price to increase may not occur as anticipated or at all. Moreover, a stock that appears to be undervalued actually may be appropriately priced at a low level and therefore would not be profitable for the fund.

Foreign Currency Risk. Risks of investing in securities denominated in, or that trade in, foreign (non-U.S.) currencies include changes in foreign exchange rates and foreign exchange restrictions.

Foreign Securities Risk. The risks of foreign securities include loss of value as a result of: political or economic instability; nationalization, expropriation or confiscatory taxation; settlement delays; and limited government regulation (including less stringent reporting, accounting, and disclosure standards than are required of U.S. companies).

Real Estate Investment Trusts (“REITs”) Risk. In addition to risks associated with investing in real estate securities, REITs are dependent upon management skills, are not diversified, and are subject to heavy cash flow dependency, risks of default by borrowers, and self-liquidation. Investment in REITs also involves risks similar to risks of investing in small market capitalization companies, such as limited financial resources, less frequent and limited volume trading, and may be subject to more abrupt or erratic price movements than larger company securities. A REIT could fail to qualify for tax-free pass-through of income under the Internal Revenue Code. Fund shareholders will indirectly bear their proportionate share of the expenses of REITs in which the fund invests.

Real Estate Securities Risk. Investing in real estate securities subjects the fund to the risks associated with the real estate market (which are similar to the risks associated with direct ownership in real estate), including declines in real estate values, loss due to casualty or condemnation, property taxes, interest rate changes, increased expenses, cash flow of underlying real estate assets, regulatory changes (including zoning, land use and rents), and environmental problems, as well as to the risks related to the management skill and creditworthiness of the issuer.

Redemption Risk. A fund that serves as an underlying fund for a fund of funds is subject to certain risks. When a fund of funds reallocates or rebalances its investments, an underlying fund may experience relatively large redemptions or investments. These transactions may cause the underlying fund to sell portfolio securities to meet such redemptions, or to invest cash from such investments, at times it would not otherwise do so, and may as a result increase transaction costs, result in changes to expense ratios and increased expenses, and adversely affect underlying fund performance. Moreover, a fund of fund's redemptions or reallocations among share classes of an underlying fund may result in changes to the expense ratios of affected classes, which may increase the expenses paid by shareholders of the class that experienced the redemption.

Performance

The following information provides some indication of the risks of investing in the Fund. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You may get updated performance information by calling 1-800-222-5852 or online at www.principalfunds.com.

Using the historical performance of the Fund's Class A shares, adjusted as described below, the bar chart shows the investment returns of the Fund's Class J shares for each full calendar year of operations for 10 years (or, if shorter, the life of the Fund). The table shows for the last one, five, and ten calendar year periods (or, if shorter, the life of the Fund), how the Fund’s average annual total returns compare with those of one or more broad measures of market performance.

For periods prior to the inception date of Class J shares (September 11, 2018), the performance shown in the bar chart and table for Class J is that of the Fund's Class A shares, adjusted to reflect the fees and expenses of Class J shares. However, where this adjustment results in performance for Class J shares that is higher than the historical performance of the Class A shares, the historical performance of the Class A shares is used (without respect to sales charges, which do not apply to Class J shares). These adjustments for Class J shares result in performance for such periods that is no higher than the historical performance of Class A shares. The Class A shares, which are not presented in this prospectus, would have substantially similar annual returns because the shares are invested in the same portfolio of securities, and the annual returns would differ only to the extent that the classes do not have the same expenses.

Total Returns as of December 31

Highest return for a quarter during the period of the bar chart above:	Q3 '09	13.97	%
Lowest return for a quarter during the period of the bar chart above:	Q4' 08	(19.82	)%

(1) The year-to-date return as of June 30, 2018 was (0.40)% for Class J shares.

Average Annual Total Returns For the periods ended December 31, 2017

Average Annual Total Returns - PFI Prospectus - Equity Income Fund [Member]	1 Year	5 Years	10 Years
Russell 1000 Value Index [Member]	13.66%	14.04%	7.10%
Equity Income Fund, Class J Shares [Member]	19.54%	13.57%	7.38%
Equity Income Fund, Class J Shares [Member] | After Taxes on Distributions	17.79%	12.72%	6.76%
Equity Income Fund, Class J Shares [Member] | After Taxes on Distributions and Sales	12.45%	10.78%	5.90%

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. The after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class J shares only and would be different for the other share classes.

[1] Based on estimated amounts for the current fiscal year (Class J).

XML

Label

Element

Value

Prospectus:

rr_ProspectusTable

Document Type

dei_DocumentType

485BPOS

Document Period End Date

dei_DocumentPeriodEndDate

Oct. 31, 2017

Entity Registrant Name

dei_EntityRegistrantName

PRINCIPAL FUNDS INC

Central Index Key

dei_EntityCentralIndexKey

0000898745

Amendment Flag

dei_AmendmentFlag

false

Document Creation Date

dei_DocumentCreationDate

Sep. 10, 2018

Document Effective Date

dei_DocumentEffectiveDate

Sep. 11, 2018

Prospectus Date

rr_ProspectusDate

Sep. 11, 2018

PFI Prospectus | Equity Income Fund [Member]

Prospectus:

rr_ProspectusTable

Risk/Return [Heading]

rr_RiskReturnHeading

EQUITY INCOME FUND

Objective [Heading]

rr_ObjectiveHeading

Objective:

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Fund seeks to provide current income and long-term growth of income and capital.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 23.3% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

23.30%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. The calculation of costs takes into account any applicable contractual fee waivers and/or expense reimbursements for the period noted in the table above. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

You would pay the following expenses if you did not redeem your shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in dividend-paying equity securities at the time of purchase. The Fund usually invests in equity securities of companies with large and medium market capitalizations. The Fund invests in value equity securities, an investment strategy that emphasizes buying equity securities that appear to be undervalued. The Fund also invests in real estate investment trusts and securities of foreign issuers.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

The value of your investment in the Fund changes with the value of the Fund's investments. Many factors affect that value, and it is possible to lose money by investing in the Fund. An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The principal risks of investing in the Fund, in alphabetical order, are:

Equity Securities Risk. The value of equity securities could decline if the issuer's financial condition declines or in response to overall market and economic conditions. A fund's principal market segment(s) (such as market capitalization or style) may underperform other market segments or the equity markets as a whole.

• Medium Market Capitalization Companies Risk. Investments in medium sized companies may involve greater risk and price volatility than investments in larger, more mature companies.

• Value Stock Risk. Value stocks may continue to be undervalued by the market for extended periods, including the entire period during which the stock is held by a fund, or the events that would cause the stock price to increase may not occur as anticipated or at all. Moreover, a stock that appears to be undervalued actually may be appropriately priced at a low level and therefore would not be profitable for the fund.

Foreign Currency Risk. Risks of investing in securities denominated in, or that trade in, foreign (non-U.S.) currencies include changes in foreign exchange rates and foreign exchange restrictions.

Foreign Securities Risk. The risks of foreign securities include loss of value as a result of: political or economic instability; nationalization, expropriation or confiscatory taxation; settlement delays; and limited government regulation (including less stringent reporting, accounting, and disclosure standards than are required of U.S. companies).

Real Estate Investment Trusts (“REITs”) Risk. In addition to risks associated with investing in real estate securities, REITs are dependent upon management skills, are not diversified, and are subject to heavy cash flow dependency, risks of default by borrowers, and self-liquidation. Investment in REITs also involves risks similar to risks of investing in small market capitalization companies, such as limited financial resources, less frequent and limited volume trading, and may be subject to more abrupt or erratic price movements than larger company securities. A REIT could fail to qualify for tax-free pass-through of income under the Internal Revenue Code. Fund shareholders will indirectly bear their proportionate share of the expenses of REITs in which the fund invests.

Real Estate Securities Risk. Investing in real estate securities subjects the fund to the risks associated with the real estate market (which are similar to the risks associated with direct ownership in real estate), including declines in real estate values, loss due to casualty or condemnation, property taxes, interest rate changes, increased expenses, cash flow of underlying real estate assets, regulatory changes (including zoning, land use and rents), and environmental problems, as well as to the risks related to the management skill and creditworthiness of the issuer.

Redemption Risk. A fund that serves as an underlying fund for a fund of funds is subject to certain risks. When a fund of funds reallocates or rebalances its investments, an underlying fund may experience relatively large redemptions or investments. These transactions may cause the underlying fund to sell portfolio securities to meet such redemptions, or to invest cash from such investments, at times it would not otherwise do so, and may as a result increase transaction costs, result in changes to expense ratios and increased expenses, and adversely affect underlying fund performance. Moreover, a fund of fund's redemptions or reallocations among share classes of an underlying fund may result in changes to the expense ratios of affected classes, which may increase the expenses paid by shareholders of the class that experienced the redemption.

Risk Lose Money [Text]

rr_RiskLoseMoney

The value of your investment in the Fund changes with the value of the Fund's investments. Many factors affect that value, and it is possible to lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following information provides some indication of the risks of investing in the Fund. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You may get updated performance information by calling 1-800-222-5852 or online at www.principalfunds.com.

Using the historical performance of the Fund's Class A shares, adjusted as described below, the bar chart shows the investment returns of the Fund's Class J shares for each full calendar year of operations for 10 years (or, if shorter, the life of the Fund). The table shows for the last one, five, and ten calendar year periods (or, if shorter, the life of the Fund), how the Fund’s average annual total returns compare with those of one or more broad measures of market performance.

For periods prior to the inception date of Class J shares (September 11, 2018), the performance shown in the bar chart and table for Class J is that of the Fund's Class A shares, adjusted to reflect the fees and expenses of Class J shares. However, where this adjustment results in performance for Class J shares that is higher than the historical performance of the Class A shares, the historical performance of the Class A shares is used (without respect to sales charges, which do not apply to Class J shares). These adjustments for Class J shares result in performance for such periods that is no higher than the historical performance of Class A shares. The Class A shares, which are not presented in this prospectus, would have substantially similar annual returns because the shares are invested in the same portfolio of securities, and the annual returns would differ only to the extent that the classes do not have the same expenses.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following information provides some indication of the risks of investing in the Fund. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You may get updated performance information by calling 1-800-222-5852 or online at www.principalfunds.com.Using the historical performance of the Fund's Class A shares, adjusted as described below, the bar chart shows the investment returns of the Fund's Class J shares for each full calendar year of operations for 10 years (or, if shorter, the life of the Fund). The table shows for the last one, five, and ten calendar year periods (or, if shorter, the life of the Fund), how the Fund’s average annual total returns compare with those of one or more broad measures of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

1-800-222-5852

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.principalfunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Total Returns as of December 31

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Highest return for a quarter during the period of the bar chart above:	Q3 '09	13.97	%
Lowest return for a quarter during the period of the bar chart above:	Q4' 08	(19.82	)%

(1) The year-to-date return as of June 30, 2018 was (0.40)% for Class J shares.

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns For the periods ended December 31, 2017

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. The after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Class J shares only and would be different for the other share classes.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. The after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Class J shares only and would be different for the other share classes.

PFI Prospectus | Equity Income Fund [Member] | Russell 1000 Value Index [Member]

Prospectus:

rr_ProspectusTable

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses, or taxes)

1 Year

rr_AverageAnnualReturnYear01

13.66%

5 Years

rr_AverageAnnualReturnYear05

14.04%

10 Years

rr_AverageAnnualReturnYear10

7.10%

PFI Prospectus | Equity Income Fund [Member] | Equity Income Fund, Class J Shares [Member]

Prospectus:

rr_ProspectusTable

Trading Symbol

dei_TradingSymbol

PEIJX

Maximum Deferred Sales Charge (as a percentage)

rr_MaximumDeferredSalesChargeOverOther

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.51%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.15%

Other Expenses (as a percentage of Assets):

rr_OtherExpensesOverAssets

0.18%

^[1]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.84%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 186

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

268

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

466

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,037

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

86

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

268

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

466

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 1,037

Annual Return 2008

rr_AnnualReturn2008

(34.26%)

Annual Return 2009

rr_AnnualReturn2009

19.97%

Annual Return 2010

rr_AnnualReturn2010

15.76%

Annual Return 2011

rr_AnnualReturn2011

5.07%

Annual Return 2012

rr_AnnualReturn2012

12.47%

Annual Return 2013

rr_AnnualReturn2013

26.68%

Annual Return 2014

rr_AnnualReturn2014

12.25%

Annual Return 2015

rr_AnnualReturn2015

(4.26%)

Annual Return 2016

rr_AnnualReturn2016

15.15%

Annual Return 2017

rr_AnnualReturn2017

20.54%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Highest return for a quarter during the period of the bar chart above:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.97%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest return for a quarter during the period of the bar chart above:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(19.82%)

1 Year

rr_AverageAnnualReturnYear01

19.54%

5 Years

rr_AverageAnnualReturnYear05

13.57%

10 Years

rr_AverageAnnualReturnYear10

7.38%

PFI Prospectus | Equity Income Fund [Member] | Equity Income Fund, Class J Shares [Member] | After Taxes on Distributions

Prospectus:

rr_ProspectusTable

1 Year

rr_AverageAnnualReturnYear01

17.79%

5 Years

rr_AverageAnnualReturnYear05

12.72%

10 Years

rr_AverageAnnualReturnYear10

6.76%

PFI Prospectus | Equity Income Fund [Member] | Equity Income Fund, Class J Shares [Member] | After Taxes on Distributions and Sales

Prospectus:

rr_ProspectusTable

1 Year

rr_AverageAnnualReturnYear01

12.45%

5 Years

rr_AverageAnnualReturnYear05

10.78%

10 Years

rr_AverageAnnualReturnYear10

5.90%

[1] Based on estimated amounts for the current fiscal year (Class J).