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Label Element Value
Prospectus [Line Items] rr_ProspectusLineItems  
Document Type dei_DocumentType 485BPOS
Document Period End Date dei_DocumentPeriodEndDate Dec. 31, 2018
Entity Registrant Name dei_EntityRegistrantName PACER FUNDS TRUST
Entity Central Index Key dei_EntityCentralIndexKey 0001616668
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Apr. 30, 2019
Document Effective Date dei_DocumentEffectiveDate Apr. 30, 2019
Prospectus Date rr_ProspectusDate Apr. 30, 2019
Entity Inv Company Type dei_EntityInvCompanyType N-1A
Pacer Trendpilot International ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk/Return [Heading] rr_RiskReturnHeading Pacer Trendpilot® International ETF
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Pacer Trendpilot® International ETF (the “Fund”) is an exchange traded fund (“ETF”) that seeks to track the total return performance, before fees and expenses, of the Pacer Trendpilot International Index (the “Index”).
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. The fees are expressed as a percentage of the Fund’s average net assets. This table and the Example below do not include the brokerage commissions that investors may pay on their purchases and sales of Fund shares.
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. Because the Fund is newly organized, portfolio turnover information is not yet available.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help retail investors compare the cost of investing in the Fund with the cost of investing in other funds. It illustrates the hypothetical expenses that such investors would incur over various periods if they were to invest $10,000 in the Fund for the time periods indicated and then redeem all of the shares at the end of those periods. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain the same.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies of the Fund
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs a “passive management” (or indexing) investment approach designed to track the total return performance, before fees and expenses, of the Index. The Index is based on a proprietary methodology developed and maintained by Index Design Group, an affiliate of Pacer Advisors, Inc., the Fund’s investment adviser (the “Adviser”).
 
The Index
The Index uses an objective, rules-based methodology to implement a systematic trend-following strategy that directs exposure (i) 100% to the S&P Developed Ex-U.S. LargeCap Index, (ii) 50% to the S&P Developed Ex-U.S. LargeCap Index and 50% to 3-Month US Treasury bills, or (iii) 100% to 3-Month US Treasury bills, depending on the relative performance of the S&P Developed Ex-U.S. LargeCap Index and its 200-business day historical simple moving average (the “200-day moving average”). The calculation of the 200-day moving average for the S&P Developed Ex-U.S. LargeCap Index is based on the total return version of the S&P Developed Ex-U.S. LargeCap Local Currency Index and reflects the reinvestment of dividends paid by the securities in the S&P Developed Ex-U.S. LargeCap Index. The Index is expected to be predominantly invested in the components of the S&P Developed Ex-U.S. LargeCap Index over most short- and long-term periods and is only expected to invest in 3-Month US Treasury bills from time to time in response to adverse market conditions as defined by the “50/50 Indicator” and “T-Bill Indicator” below.
 
The S&P Developed Ex-U.S. LargeCap Index is a rules-based, float-adjusted, market capitalization-weighted index comprised of large-capitalization stocks providing coverage of the developed markets excluding the United States. The S&P Developed Ex-U.S. LargeCap Index is a subset of the S&P Global BMI, a comprehensive, rules-based index measuring global stock market performance.

The Index, and consequently the Fund, may stay in any of its three possible positions for an extended period of time. As described below, the Index will change its position based on the following indicators, and each change will become effective on the second business day after the indicator for the change is triggered.
 
As of April 23, 2019, the Index had 650 constituents and had significant exposure to companies in Japan and Western Europe.
 
Equity Indicator. When the S&P Developed Ex-U.S. LargeCap Index closes above its 200-day moving average for five consecutive business days (the “Equity Indicator”), the exposure of the Index will be 100% to the S&P Developed Ex-U.S. LargeCap Index, effective on the second business day following the date of the Equity Indicator.
 
Once the Equity Indicator has been triggered, the exposure of the Index will next change to either be 50% to the S&P Developed Ex-U.S. LargeCap Index and 50% to 3-Month US Treasury bills if the 50/50 Indicator (described below) is triggered or 100% to 3-Month US Treasury bills if both the 50/50 Indicator and the T-Bill Indicator (described below) are triggered simultaneously, effective on the second business day following the date of the indicator(s).
 
50/50 Indicator. When the S&P Developed Ex-U.S. LargeCap Index closes below its 200-day moving average for five consecutive business days (the “50/50 Indicator”), the exposure of the Index will be 50% to the S&P Developed Ex-U.S. LargeCap Index and 50% to 3-Month US Treasury bills, effective on the second business day following the date of the 50/50 Indicator. Following the effectiveness of the 50/50 Indicator, the exposure of the Index may be greater than or less than 50% with respect to the S&P Developed Ex-U.S. LargeCap Index and 3-Month US Treasury bills depending on their respective performance until either the Equity Indicator or T-Bill Indicator (described below) is triggered.
 
Once the 50/50 Indicator has been triggered, the exposure of the Index will next change to either be 100% to the S&P Developed Ex-U.S. LargeCap Index if the Equity Indicator is triggered or 100% to 3-Month US Treasury bills if the T-Bill Indicator (described below) is triggered, effective on the second business day following the date of the indicator.
 
T-Bill Indicator. When the S&P Developed Ex-U.S. LargeCap Index’s 200-day moving average closes lower than its value from five business days earlier (the “T-Bill Indicator”), the exposure of the Index will be 100% to 3-Month US Treasury bills, effective on the second business day following the date of the T-Bill Indicator.
 
For example, if today is Wednesday and the S&P Developed Ex-U.S. LargeCap Index’s 200-day moving average closes lower than it did on the fifth preceding business day (Wednesday of the preceding week), the T-Bill Indicator is triggered. Unlike the operation of the Equity Indicator and 50/50 Indicator, the closing values on the days in between today and the fifth preceding business day do not affect whether the T-Bill Indicator has been triggered; rather, the T-Bill Indicator simply compares today’s closing value to the closing value five business days earlier. However, the Index will not move directly from 100% exposure to the S&P Developed Ex-U.S. LargeCap Index to 100% exposure to 3-Month US Treasury bills unless the 50/50 Indicator was simultaneously triggered following the most recent triggering of the Equity Indicator.
 
Once the T-Bill Indicator has been triggered, the exposure of the Index will next change to be 100% to the S&P Developed Ex-U.S. LargeCap Index if the Equity Indicator is triggered, effective on the second business day following the date of the indicator. Once the T-Bill Indicator has been triggered, the Index will not return to its 50/50 position unless the Equity Indicator is first triggered, followed by the 50/50 Indicator being triggered.
 
The Index aims to mitigate, to some extent, the volatility of the S&P Developed Ex-U.S. LargeCap Index by tracking 3-Month US Treasury bills (instead of the S&P Developed Ex-U.S. LargeCap Index) when the S&P Developed Ex-U.S. LargeCap Index is in a negative trend.
 
The Fund’s Investment Strategy
Under normal circumstances, at least 80% of the Fund’s total assets (exclusive of collateral held from securities lending) will be invested in the component securities of the Index and investments that have economic characteristics that are substantially identical to the economic characteristics of such component securities (e.g., depositary receipts). The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Index, before fees and expenses, will be 95% or better. The Fund’s assets may include investments denominated in non-U.S. currencies.

The Fund will generally use a “replication” strategy to achieve its investment objective, meaning it will invest in all of the component securities of the Index in the same approximate proportion as in the Index.
The Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. At times, the Fund may have a portfolio turnover rate substantially greater than 100%.
Risk [Heading] rr_RiskHeading Principal Risks of Investing in the Fund
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
You can lose money on your investment in the Fund. The Fund is subject to the risks summarized below. The principal risks are presented in alphabetical order to facilitate finding particular risks and comparing them with other funds. Each risk summarized below is considered a ‘principal risk’ of investing in the Fund, regardless of the order in which they appear. Some or all of these risks may adversely affect the Fund’s net asset value per share (“NAV”), trading price, yield, total return and/or ability to meet its objectives. For more information about the risks of investing in the Fund, see the section in the Fund’s prospectus entitled “Additional Information about the Principal Risks of Investing in the Funds.”

Calculation Methodology Risk. The Index relies directly or indirectly on various sources of information to assess the criteria of issuers included in the Index, including information that may be based on assumptions and estimates. Neither the Fund, the Index Provider, or the Adviser can offer assurances that the Index’s calculation methodology or sources of information will provide an accurate assessment of included issuers or a correct valuation of securities, nor can they guarantee the availability or timeliness of the production of the Index.

Currency Exchange Rate Risk. The Fund’s assets may include investments denominated in non-U.S. currencies, such as the euro, or in securities or other assets that provide exposure to such currencies. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the Fund’s investment and the value of your Fund shares. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the value of an investment in the Fund may change quickly and without warning and you may lose money.

Equity Market Risk. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific industries, sectors or companies in which the Fund invests. Common stocks are susceptible to general stock market fluctuations and to volatile increases and decreases in value as market confidence in and perceptions of their issuers change.
 
Fixed Income Risk. The value of the Fund’s direct or indirect investments in fixed income securities will fluctuate with changes in interest rates. Typically, a rise in interest rates causes a decline in the value of fixed income securities owned by the Fund. On the other hand, if rates fall, the value of the fixed income securities generally increases. The Fund may be subject to a greater risk of rising interest rates due to the current period of historically low rates and the effect of potential government fiscal policy initiatives and resulting market reaction to those initiatives. In general, the market price of fixed income securities with longer maturities will increase or decrease more in response to changes in interest rates than shorter-term securities. The value of the Fund’s direct or indirect investments in fixed income securities may be affected by the inability of issuers to repay principal and interest or illiquidity in debt securities markets.

Foreign Securities Risk. Investments in non-U.S. securities involve certain risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. Investments in non-U.S. securities also may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. These and other factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

Geographic Concentration Risk. To the extent the Fund invests a significant portion of its assets in the securities of companies of a single country or region, it is more likely to be impacted by events or conditions affecting that country or region.

Risks Related to Investing in Japan. The Japanese economy may be subject to considerable degrees of economic, political and social instability, which could have a negative impact on Japanese securities. Japan’s economic growth rate has remained relatively low for an extended period of time and it may remain low in the future. In addition, Japan is subject to the risk of natural disasters, such as earthquakes, volcanoes, typhoons and tsunamis. Additionally, decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosure rates may have an adverse impact on the economy of Japan. Japan also has few natural resources, and any fluctuation or shortage in the commodity markets could have a negative impact on Japanese securities.

Risks Related to Investing in Western Europe. Most developed countries in Western Europe are members of the European Union (“EU”), and many are also members of the European Monetary Union (EMU), which requires compliance with restrictions on inflation rates, deficits, and debt levels. Unemployment in certain European nations is historically high and several countries face significant debt problems. These conditions can significantly affect every country in Europe. The euro is the official currency of the EU. Funds that invest in Europe may have significant exposure to the euro and events affecting the euro. Recent market events affecting several of the EU member countries have adversely affected the sovereign debt issued by those countries, and ultimately may lead to a decline in the value of the euro. A significant decline in the value of the euro may produce unpredictable effects on trade and commerce generally and could lead to increased volatility in financial markets worldwide.

Additionally, investments in the UK and other European countries may be significantly impacted by the decision of the UK to leave the EU (known as “Brexit”). Brexit has introduced significant uncertainty and may have a negative impact on the economy and currency of the UK and European countries, including increased market volatility and illiquidity and potentially lower economic growth.
 
Government Obligations Risk. The Fund may invest in securities issued by the U.S. government. There can be no guarantee that the United States will be able to meet its payment obligations with respect to such securities. Additionally, market prices and yields of securities supported by the full faith and credit of the U.S. government may decline or be negative for short or long periods of time.

High Portfolio Turnover Risk. A high portfolio turnover rate would result in correspondingly greater transaction expenses, including brokerage commissions, dealer mark ups and other transaction costs, on the sale of securities and on reinvestment in other securities and may result in reduced performance and the distribution to shareholders of additional capital gains for tax purposes. These factors may negatively affect the Fund’s performance.

Large-Capitalization Investing Risk. The Fund may invest in the securities of large-capitalization companies. As a result, the Fund’s performance may be adversely affected if securities of large-capitalization companies underperform securities of smaller-capitalization companies or the market as a whole. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion.

Mid-Capitalization Investing Risk. The Fund may invest in the securities of mid-capitalization companies. As a result, the Fund’s performance may be adversely affected if securities of mid-capitalization companies underperform securities of other capitalization ranges or the market as a whole. Securities of smaller companies trade in smaller volumes and are often more vulnerable to market volatility than securities of larger companies.

New Fund Risk. The Fund is new with no operating history. As a result, there can be no assurance that the Fund will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Index than it otherwise would at higher asset levels, or it could ultimately liquidate. The Fund’s distributor does not maintain a secondary market in Fund shares.

Non-Diversification Risk. Although the Fund intends to invest in a variety of securities and instruments, the Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance.

Passive Investment Risk. The Fund is not actively managed and the Adviser would not sell a security due to current or projected underperformance of a security, industry or sector, unless that security is removed from the Index or the selling of shares of that security is otherwise required upon a reconstitution of the Index in accordance with the Index methodology. The Fund invests in securities included in, the Index, regardless of their investment merits. The Fund does not take defensive positions under any market conditions, including conditions that are adverse to the performance of the Fund.

Shares of the Fund May Trade at Prices Other Than NAV. As with all ETFs, Fund shares may be bought and sold in the secondary market at market prices. The price of Fund shares, like the price of all traded securities, will be subject to factors such as supply and demand, as well as the current value of the Fund’s portfolio holdings. Although it is expected that the market price of the shares of the Fund will approximate the Fund’s NAV, there may be times when the market price of the shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount). This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for shares in the secondary market, in which case such premiums or discounts may be significant. Because securities held by the Fund trade on foreign exchanges that are closed when the Fund’s primary listing exchange is open, the Fund is likely to experience premiums and discounts greater than those of domestic ETFs.

Tracking Risk. The Fund’s return may not track the return of the Index for a number of reasons. For example, the Fund incurs a number of operating expenses not applicable to the Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Index. In addition, when the Fund uses a representative sampling approach, the Fund may not be as well correlated with the return of the Index as when the Fund purchases all of the securities in the Index in the proportions in which they are represented in the Index. To the extent the Fund calculates its NAV based on fair value prices and the value of the Index is based on securities’ closing prices on local foreign markets (i.e., the value of the Index is not based on fair value prices), the Fund’s ability to track the Index may be adversely affected.

Trend Lag Risk. At least six consecutive trading days will elapse after the S&P Developed Ex-U.S. LargeCap Index first drops below its historical 200-day simple moving average (or conversely, first moves above such average) before the Index will switch from tracking the S&P Developed Ex-U.S. LargeCap Index to 3-Month US Treasury bills (or conversely, from 3-Month US Treasury bills to the S&P Developed Ex-U.S. LargeCap Index ). As a result, if the S&P Developed Ex-U.S. LargeCap Index is in an overall positive trend, the Index and consequently the Fund may be adversely affected by a downward trend and/or volatility in the S&P Developed Ex-U.S. LargeCap Index for up to six consecutive trading days (or conversely, if the S&P Developed Ex-U.S. LargeCap Index is in an overall negative trend, the Index and consequently the Fund may not benefit from an upward trend and/or volatility in the S&P Developed Ex-U.S. LargeCap Index for up to six consecutive trading days). Accordingly, the methodology employed by the Index does not eliminate exposure to downward trends and/or volatility in the S&P Developed Ex-U.S. LargeCap Index or provide immediate exposure to upward trends and/or volatility in the S&P Developed Ex-U.S. LargeCap Index.
Risk Lose Money [Text] rr_RiskLoseMoney You can lose money on your investment in the Fund.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Although the Fund intends to invest in a variety of securities and instruments, the Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus. In the future, performance information for the Fund will be presented in this section. Updated performance information is available on the Fund’s website at www.paceretfs.com or by calling the Fund toll-free at 1-877-337-0500.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-877-337-0500
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.paceretfs.com
Pacer Trendpilot International ETF | Pacer Trendpilot International ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.65%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none [1]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.65%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 66
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 208
Pacer Trendpilot Fund of Funds ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk/Return [Heading] rr_RiskReturnHeading Pacer Trendpilot® Fund of Funds ETF
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Pacer Trendpilot Fund of Funds ETF (the “Fund”) is an exchange traded fund (“ETF”) that seeks to track the total return performance, before fees and expenses, of the Pacer Trendpilot Fund of Funds Index (the “Index” or the “Fund of Funds Index”).
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. The fees are expressed as a percentage of the Fund’s average net assets. This table and the Example below do not include the brokerage commissions that investors may pay on their purchases and sales of Fund shares.
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. Because the Fund is newly organized, portfolio turnover information is not yet available.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help retail investors compare the cost of investing in the Fund with the cost of investing in other funds. It illustrates the hypothetical expenses that such investors would incur over various periods if they were to invest $10,000 in the Fund for the time periods indicated and then redeem all of the shares at the end of those periods. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain the same.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies of the Fund
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs a “passive management” (or indexing) investment approach designed to track the total return performance, before fees and expenses, of the Index. The Index is based on a proprietary methodology developed and maintained by Index Design Group, an affiliate of Pacer Advisors, Inc., the Fund’s investment adviser (the “Adviser”).
 
The Index
The Fund of Funds Index uses an objective, rules-based approach to construct a portfolio that, as of each quarterly rebalance, is composed of the ETFs listed in the following table, each advised by the Adviser (collectively, the “Trendpilot ETFs”). Each of the Trendpilot ETFs is an index-based ETF that seeks to track the total return performance, before fees and expenses, of the underlying index listed in the following table (collectively, the “Trendpilot Indexes”). Each Trendpilot Index uses an objective, rules-based methodology to implement a systematic trend-following strategy that directs exposure (i) 100% to the “Equity Component” specified in the table below, (ii) 50% to the applicable Equity Component and 50% to 3-Month US Treasury bills, or (iii) 100% to 3-Month US Treasury bills, depending on the relative performance of the Equity Component and its 200-business day historical simple moving average (the “200-day moving average”). The calculation of the 200-day moving average for each Equity Component is based on the total return version of such Equity Component and reflects the reinvestment of dividends paid by the securities in such Equity Component.
 
Weight
Trendpilot ETF
Trendpilot Index
Equity Component
20%
Pacer Trendpilot ® US Large Cap ETF
Pacer Trendpilot US Large Cap Index
S&P 500 ® Index
20%
Pacer Trendpilot ® US Mid Cap ETF
Pacer Trendpilot US Mid Cap Index
S&P MidCap 400 ® Index
20%
Pacer Trendpilot ® 100 ETF
Pacer NASDAQ-100 Trendpilot Index
NASDAQ-100 ® Index
40%
Pacer Trendpilot ® International ETF
Pacer Trendpilot International Index
S&P Developed Ex-U.S. LargeCap Index
 
The Trendpilot Indexes
Each Trendpilot Index uses a systematic trend following strategy that directs the Trendpilot Index’s exposure to either the applicable Equity Component, 50% to the applicable Equity Component and 50% to 3-Month US Treasury bills, or 100% to 3-Month US Treasury bills and may stay in any of its three possible positions for an extended period of time. As described below, each Trendpilot Index will change its position based on the following indicators, and each change will become effective on the second business day after the indicator for the change is triggered.
 
Equity Indicator. When the applicable Equity Component closes above its 200-day moving average for five consecutive business days (the “Equity Indicator”), the exposure of the applicable Trendpilot Index will be 100% to the Equity Component, effective on the second business following the date of the Equity Indicator.
 
Once the Equity Indicator has been triggered, the exposure of the Trendpilot Index will next change to either be 50% to the Equity Component and 50% to 3-Month US Treasury bills if the 50/50 Indicator (described below) is triggered or 100% to 3-Month US Treasury bills if both the 50/50 Indicator and the T-Bill Indicator (described below) are triggered simultaneously, effective on the second business day following the date of the indicator(s).
 
50/50 Indicator. When the applicable Equity Component closes below its 200-day moving average for five consecutive business days (the “50/50 Indicator”), the exposure of the Trendpilot Index will be 50% to the Equity Component and 50% to 3-Month US Treasury bills, effective on the second business day following the date of the 50/50 Indicator. Following the effectiveness of the 50/50 Indicator, the exposure of the Trendpilot Index may be greater than or less than 50% with respect to the Equity Component and 3-Month US Treasury bills depending on their respective performance until either the Equity Indicator or T-Bill Indicator (described below) is triggered.
 
Once the 50/50 Indicator has been triggered, the exposure of the Trendpilot Index will next change to either be 100% to the Equity Component if the Equity Indicator is triggered or 100% to 3-Month US Treasury bills if the T-Bill Indicator (described below) is triggered, effective on the second business day following the date of the indicator.
 
T-Bill Indicator. When the applicable Equity Component’s 200-day moving average closes lower than its value from five business days earlier (the “T-Bill Indicator”), the exposure of the Trendpilot Index will be 100% to 3-Month US Treasury bills, effective on the second business day following the date of the T-Bill Indicator.
 
For example, if today is Wednesday and the applicable Equity Component’s 200-day moving average closes lower than it did on the fifth preceding business day (Wednesday of the preceding week), the T-Bill Indicator is triggered. Unlike the operation of the Equity Indicator and 50/50 Indicator, the closing values on the days in between today and the fifth preceding business day do not affect whether the T-Bill Indicator has been triggered; rather, the T-Bill Indicator simply compares today’s closing value to the closing value five business days earlier. However, the Trendpilot Index will not move directly from 100% exposure to the Equity Component to 100% exposure to 3-Month US Treasury bills unless the 50/50 Indicator was simultaneously triggered following the most recent triggering of the Equity Indicator.
 
Once the T-Bill Indicator has been triggered, the exposure of the Trendpilot Index will next change to be 100% to the Equity Component if the Equity Indicator is triggered, effective on the second business day following the date of the indicator. Once the T-Bill Indicator has been triggered, the Trendpilot Index will not return to its 50/50 position unless the Equity Indicator is first triggered, followed by the 50/50 Indicator being triggered.
 
The Index aims to mitigate, to some extent, the volatility of the Equity Component by tracking 3-Month US Treasury bills (instead of the Equity Component) when the applicable Equity Component is in a negative trend. Because the Equity Indicator, 50/50 Indicator, and T-Bill Indicator (collectively, the “Exposure Indicators”) for each Trendpilot Index operate independent of the Exposure Indicators for each other Trendpilot Index, the Fund of Funds Index may reflect equity exposure each Trendpilot ETF, for each Trendpilot ETF, or a mix of equity 3-Month US Treasury bill exposures for short or long periods of time. When the 50/50 Indicator or T-Bill Indicator has been triggered for a particular Trendpilot ETF, the Fund of Funds Index will have reduced or no exposure, respectively, to the applicable Trendpilot ETF’s Equity Component.
 
The Fund’s Investment Strategy
Under normal circumstances, at least 80% of the Fund’s total assets (exclusive of collateral held from securities lending) will be invested in the component securities of the Fund of Funds Index (i.e., the Trendpilot ETFs). The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Fund of Funds Index, before fees and expenses, will be 95% or better.
 
The Fund will generally use a “replication” strategy to achieve its investment objective, meaning it will invest in all of the component securities of the Index in the same approximate proportion as in the Index.
 
The Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund.
Risk [Heading] rr_RiskHeading Principal Risks of Investing in the Fund
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
You can lose money on your investment in the Fund. The Fund is subject to the risks summarized below. The principal risks are presented in alphabetical order to facilitate finding particular risks and comparing them with other funds. Each risk summarized below is considered a ‘principal risk’ of investing in the Fund, regardless of the order in which they appear. Some or all of these risks may adversely affect the Fund’s net asset value per share (“NAV”), trading price, yield, total return and/or ability to meet its objectives. For more information about the risks of investing in the Fund, see the section in the Fund’s prospectus entitled “Additional Information about the Principal Risks of Investing in the Funds.”

Currency Exchange Rate Risk. The Fund’s assets may include exposure to investments denominated in non-U.S. currencies or in securities or other assets that provide exposure to such currencies. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the Fund’s investment and the value of your Fund shares. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the value of an investment in the Fund may change quickly and without warning and you may lose money.

Equity Market Risk. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific industries, sectors or companies in which the Fund invests. Common stocks are susceptible to general stock market fluctuations and to volatile increases and decreases in value as market confidence in and perceptions of their issuers change.

Fixed Income Risk. The value of the Fund’s direct or indirect investments in fixed income securities will fluctuate with changes in interest rates. Typically, a rise in interest rates causes a decline in the value of fixed income securities owned by the Fund. On the other hand, if rates fall, the value of the fixed income securities generally increases. The Fund may be subject to a greater risk of rising interest rates due to the current period of historically low rates and the effect of potential government fiscal policy initiatives and resulting market reaction to those initiatives. In general, the market price of fixed income securities with longer maturities will increase or decrease more in response to changes in interest rates than shorter-term securities. The value of the Fund’s direct or indirect investments in fixed income securities may be affected by the inability of issuers to repay principal and interest or illiquidity in debt securities markets.

Foreign Securities Risk. Investments in non-U.S. securities involve certain risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. Investments in non-U.S. securities also may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. These and other factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

Government Obligations Risk. The Fund may invest in securities issued by the U.S. government. There can be no guarantee that the United States will be able to meet its payment obligations with respect to such securities. Additionally, market prices and yields of securities supported by the full faith and credit of the U.S. government may decline or be negative for short or long periods of time.

High Portfolio Turnover Risk. At times, the Fund may have a portfolio turnover rate substantially greater than 100%. A high portfolio turnover rate would result in correspondingly greater transaction expenses, including brokerage commissions, dealer mark ups and other transaction costs, on the sale of securities and on reinvestment in other securities and may result in reduced performance and the distribution to shareholders of additional capital gains for tax purposes. These factors may negatively affect the Fund’s performance.

Large-Capitalization Investing Risk. The Fund may invest in the securities of large-capitalization companies. As a result, the Fund’s performance may be adversely affected if securities of large-capitalization companies underperform securities of smaller-capitalization companies or the market as a whole. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion.

Mid-Capitalization Investing Risk. The Fund may invest in the securities of mid-capitalization companies. As a result, the Fund’s performance may be adversely affected if securities of mid-capitalization companies underperform securities of other capitalization ranges or the market as a whole. Securities of smaller companies trade in smaller volumes and are often more vulnerable to market volatility than securities of larger companies.

New Fund Risk. The Fund is new with no operating history. As a result, there can be no assurance that the Fund will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Index than it otherwise would at higher asset levels, or it could ultimately liquidate. The Fund’s distributor does not maintain a secondary market in Fund shares.

Non-Diversification Risk. Although the Fund intends to invest in a variety of securities and instruments, the Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance.

Other Investment Companies Risk. The Fund will incur higher and duplicative expenses when it invests in other investment companies such as ETFs. There is also the risk that the Fund may suffer losses due to the investment practices of the underlying funds. When the Fund invests in other investment companies, the Fund will be subject to substantially the same risks as those associated with the direct ownership of securities held by such investment companies. Investments in ETFs are also subject to the following risks: (i) the market price of an ETF’s shares may trade above or below their net asset value; (ii) an active trading market for an ETF’s shares may not develop or be maintained; and (iii) trading of an ETF’s shares may be halted for a number of reasons.

Passive Investment Risk. The Fund is not actively managed and the Adviser would not sell a security due to current or projected underperformance of a security, industry or sector, unless that security is removed from the Index or the selling of shares of that security is otherwise required upon a reconstitution of the Index in accordance with the Index methodology. The Fund invests in securities included in, the Index, regardless of their investment merits. The Fund does not take defensive positions under any market conditions, including conditions that are adverse to the performance of the Fund.

Shares of the Fund May Trade at Prices Other Than NAV. As with all ETFs, Fund shares may be bought and sold in the secondary market at market prices. The price of Fund shares, like the price of all traded securities, will be subject to factors such as supply and demand, as well as the current value of the Fund’s portfolio holdings. Although it is expected that the market price of the shares of the Fund will approximate the Fund’s NAV, there may be times when the market price of the shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount). This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for shares in the secondary market, in which case such premiums or discounts may be significant. Because securities held by the Fund trade on foreign exchanges that are closed when the Fund’s primary listing exchange is open, the Fund is likely to experience premiums and discounts greater than those of domestic ETFs.

Tracking Risk. The Fund’s return may not track the return of the Index for a number of reasons. For example, the Fund incurs a number of operating expenses not applicable to the Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Index. In addition, when the Fund uses a representative sampling approach, the Fund may not be as well correlated with the return of the Index as when the Fund purchases all of the securities in the Index in the proportions in which they are represented in the Index. To the extent the Fund calculates its NAV based on fair value prices and the value of the Index is based on securities’ closing prices on local foreign markets (i.e., the value of the Index is not based on fair value prices), the Fund’s ability to track the Index may be adversely affected.

Trend Lag Risk. At least six consecutive trading days will elapse after the applicable Equity Component first drops below its historical 200-day simple moving average (or conversely, first moves above such average) before a Trendpilot Index will switch from tracking the Equity Component to 3-Month US Treasury bills (or conversely, from 3-Month US Treasury bills to the Equity Component). As a result, if the Equity Component is in an overall positive trend, the Trendpilot Index and consequently the Fund of Funds Index and the Fund may be adversely affected by a downward trend and/or volatility in the Equity Component for up to six consecutive trading days (or conversely, if the Equity Component is in an overall negative trend, the Trendpilot Index and consequently the Fund of Funds Index and the Fund may not benefit from an upward trend and/or volatility in the Equity Component for up to six consecutive trading days). Accordingly, the methodology employed by each Trendpilot Index does not eliminate exposure to downward trends and/or volatility in the Equity Component and does not provide immediate exposure to upward trends and/or volatility in the Equity Component.
Risk Lose Money [Text] rr_RiskLoseMoney You can lose money on your investment in the Fund.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Although the Fund intends to invest in a variety of securities and instruments, the Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus. In the future, performance information for the Fund will be presented in this section. Updated performance information is available on the Fund’s website at www.paceretfs.com or by calling the Fund toll-free at 1-877-337-0500.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-877-337-0500
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.paceretfs.com
Pacer Trendpilot Fund of Funds ETF | Pacer Trendpilot Fund of Funds ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.15%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none [2]
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.63% [2]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.78%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 80
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 249
Pacer US Cash Cows Growth ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk/Return [Heading] rr_RiskReturnHeading Pacer US Cash Cows Growth ETF
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Pacer US Cash Cows Growth ETF (the “Fund”) is an exchange traded fund (“ETF”) that seeks to track the total return performance, before fees and expenses, of the Pacer US Cash Cows Growth Index (the “Index”).
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. The fees are expressed as a percentage of the Fund’s average net assets. This table and the Example below do not include the brokerage commissions that investors may pay on their purchases and sales of Fund shares.
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. Because the Fund is newly organized, portfolio turnover information is not yet available.
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions This table and the Example below do not include the brokerage commissions that investors may pay on their purchases and sales of Fund shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help retail investors compare the cost of investing in the Fund with the cost of investing in other funds. It illustrates the hypothetical expenses that such investors would incur over various periods if they were to invest $10,000 in the Fund for the time periods indicated and then redeem all of the shares at the end of those periods. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain the same.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies of the Fund
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs a “passive management” (or indexing) investment approach designed to track the total return performance, before fees and expenses, of the Index. The Index is based on a proprietary methodology developed and maintained by Index Design Group, an affiliate of Pacer Advisors, Inc., the Fund’s investment adviser (the “Adviser”).
 

The Index
The Index uses an objective, rules-based methodology to provide exposure to mid- and large-capitalization U.S. companies with high free cash flow yields. Companies with high free cash flow yields are commonly referred to as “cash cows”.
 
The initial Index universe is derived from the component companies of the S&P 900 ® Pure Growth Index. The initial universe of companies is screened based on their average projected free cash flows and earnings (if available) over each of the next two fiscal years. Companies for which information on their projected free cash flows or earnings is not available will remain in the Index universe. Companies with negative average projected free cash flows or earnings are removed from the Index universe. Additionally, financial companies, other than real estate investment trusts (“REITs”), are excluded from the Index universe.
 
Free Cash Flow (FCF): A company’s cash flow from operations minus capital expenditures.
Enterprise Value (EV): A company’s market capitalization plus its debt and minus its cash and cash equivalents.
Free Cash Flow Yield: FCF / EV

The remaining companies are ranked by their free cash flow yield for the trailing twelve month period. The equity securities of the 50 companies with the highest free cash flow yield are included in the Index. As of April 23, 2019, the Index had significant exposure to companies in the information technology, industrials, health care, and energy sectors.
 
At the time of each rebalance of the Index, the companies included in the Index are weighted in proportion to their current market capitalization, and weightings are capped at 5% of the weight of the Index for any individual company. Weight above the 5% limitation is redistributed among the other Index constituents in proportion to their weights. As of April 23, 2019, the Index had a market capitalization range of $1.2 billion to $250.8 billion. The Index is reconstituted and rebalanced quarterly as of the close of business on the 3nd Friday of March, June, September, and December based on data as of the 2nd Friday of the applicable rebalance month.
 
The Fund’s Investment Strategy
Under normal circumstances, at least 80% of the Fund’s total assets (exclusive of collateral held from securities lending) will be invested in the component securities of the Index. The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Index, before fees and expenses, will be 95% or better.
 
The Fund will generally use a “replication” strategy to achieve its investment objective, meaning it will invest in all of the component securities of the Index in the same approximate proportion as in the Index.
 
The Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund.
Risk [Heading] rr_RiskHeading Principal Risks of Investing in the Fund
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
You can lose money on your investment in the Fund. The Fund is subject to the risks summarized below. The principal risks are presented in alphabetical order to facilitate finding particular risks and comparing them with other funds. Each risk summarized below is considered a ‘principal risk’ of investing in the Fund, regardless of the order in which they appear. Some or all of these risks may adversely affect the Fund’s net asset value per share (“NAV”), trading price, yield, total return and/or ability to meet its objectives. For more information about the risks of investing in the Fund, see the section in the Fund’s prospectus entitled “Additional Information about the Principal Risks of Investing in the Fund.”

Concentration Risk. If the Index concentrates in an industry or group of industries, the Fund’s investments may be concentrated accordingly. In such event, the value of the Fund’s shares may rise and fall more than the value of shares of a fund that invests in securities of companies in a broader range of industries. In addition, at times, an industry or group of industries in which the Fund is concentrated may be out of favor and underperform other industries or groups of industries.

Equity Market Risk. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific industries, sectors or companies in which the Fund invests. Common stocks are susceptible to general stock market fluctuations and to volatile increases and decreases in value as market confidence in and perceptions of their issuers change.

High Portfolio Turnover Risk. At times, the Fund may have a portfolio turnover rate substantially greater than 100%. A high portfolio turnover rate would result in correspondingly greater transaction expenses, including brokerage commissions, dealer mark ups and other transaction costs, on the sale of securities and on reinvestment in other securities and may result in reduced performance and the distribution to shareholders of additional capital gains for tax purposes. These factors may negatively affect the Fund’s performance.

Large-Capitalization Investing Risk. The Fund may invest in the securities of large-capitalization companies. As a result, the Fund’s performance may be adversely affected if securities of large-capitalization companies underperform securities of smaller-capitalization companies or the market as a whole. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion.

Mid-Capitalization Investing Risk. The Fund may invest in the securities of mid-capitalization companies. As a result, the Fund’s performance may be adversely affected if securities of mid-capitalization companies underperform securities of other capitalization ranges or the market as a whole. Securities of smaller companies trade in smaller volumes and are often more vulnerable to market volatility than securities of larger companies.

New Fund Risk. The Fund is new with no operating history. As a result, there can be no assurance that the Fund will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Index than it otherwise would at higher asset levels, or it could ultimately liquidate. The Fund’s distributor does not maintain a secondary market in Fund shares.

Non-Diversification Risk. Although the Fund intends to invest in a variety of securities and instruments, the Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance.

Passive Investment Risk. The Fund is not actively managed and the Adviser would not sell a security due to current or projected underperformance of a security, industry or sector, unless that security is removed from the Index or the selling of shares of that security is otherwise required upon a reconstitution of the Index in accordance with the Index methodology. The Fund invests in securities included in, the Index, regardless of their investment merits. The Fund does not take defensive positions under any market conditions, including conditions that are adverse to the performance of the Fund.

Sector Risk. To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors.

 Energy Sector Risk. The Fund may invest in companies in the energy sector, and therefore the performance of the Fund could be negatively impacted by events affecting this sector. The value of securities issued by companies in the energy sector may decline for many reasons, including, among others, changes in energy prices, government regulations, energy conservation efforts and potential civil liabilities.

 Health Care Sector Risk. The Fund may invest in companies in the health care sector, and therefore the performance of the Fund could be negatively impacted by events affecting this sector. Companies in the health care sector are subject to extensive government regulation and their profitability can be significantly affected by restrictions on government reimbursement for medical expenses, rising costs of medical products and services, pricing pressure (including price discounting), limited product lines and an increased emphasis on the delivery of healthcare through outpatient services.

 Industrials Sector Risk. The Fund may invest in companies in the industrials sector, and therefore the performance of the Fund could be negatively impacted by events affecting this sector. The industrials sector may be affected by changes in the supply of and demand for products and services, product obsolescence, claims for environmental damage or product liability and general economic conditions, among other factors.

Information Technology Sector Risk. The Fund may invest in companies in the information technology sector, and therefore the performance of the Fund could be negatively impacted by events affecting this sector. Market or economic factors impacting information technology companies and companies that rely heavily on technological advances could have a significant effect on the value of the Fund’s investments. The value of stocks of information technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Stocks of information technology companies and companies that rely heavily on technology, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Information technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability.

 Shares of the Fund May Trade at Prices Other Than NAV. As with all ETFs, Fund shares may be bought and sold in the secondary market at market prices. The price of Fund shares, like the price of all traded securities, will be subject to factors such as supply and demand, as well as the current value of the Fund’s portfolio holdings. Although it is expected that the market price of the shares of the Fund will approximate the Fund’s NAV, there may be times when the market price of the shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount). This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for shares in the secondary market, in which case such premiums or discounts may be significant.

Style Risk. The Fund’s emphasis on dividend-paying stocks involves the risk that such stocks may fall out of favor with investors and underperform the market. Also, a company may reduce or eliminate its dividend, which may have a negative impact on the Fund’s performance.

Tracking Risk. The Fund’s return may not track the return of the Index for a number of reasons. For example, the Fund incurs a number of operating expenses not applicable to the Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Index. In addition, when the Fund uses a representative sampling approach, the Fund may not be as well correlated with the return of the Index as when the Fund purchases all of the securities in the Index in the proportions in which they are represented in the Index.
Risk Lose Money [Text] rr_RiskLoseMoney You can lose money on your investment in the Fund.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Although the Fund intends to invest in a variety of securities and instruments, the Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus. In the future, performance information for the Fund will be presented in this section. Updated performance information is available on the Fund’s website at www.paceretfs.com or by calling the Fund toll-free at 1-877-337-0500.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-877-337-0500
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.paceretfs.com
Pacer US Cash Cows Growth ETF | Pacer US Cash Cows Growth ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.60%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none [3]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.60%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 61
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 192
Pacer Cash Cows Fund of Funds ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk/Return [Heading] rr_RiskReturnHeading Pacer Cash Cows Fund of Funds ETF
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Pacer Cash Cows Fund of Funds ETF (the “Fund”) is an exchange traded fund (“ETF”) that seeks to track the total return performance, before fees and expenses, of the Pacer Cash Cows Fund of Funds Index (the “Index” or the “Fund of Funds Index”).
 
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. The fees are expressed as a percentage of the Fund’s average net assets. This table and the Example below do not include the brokerage commissions that investors may pay on their purchases and sales of Fund shares.
 
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. Because the Fund is newly organized, portfolio turnover information is not yet available.
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions This table and the Example below do not include the brokerage commissions that investors may pay on their purchases and sales of Fund shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help retail investors compare the cost of investing in the Fund with the cost of investing in other funds. It illustrates the hypothetical expenses that such investors would incur over various periods if they were to invest $10,000 in the Fund for the time periods indicated and then redeem all of the shares at the end of those periods. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain the same.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies of the Fund
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs a “passive management” (or indexing) investment approach designed to track the total return performance, before fees and expenses, of the Index. The Index is based on a proprietary methodology developed and maintained by Index Design Group, an affiliate of Pacer Advisors, Inc., the Fund’s investment adviser (the “Adviser”).
 
The Index
The Fund of Funds Index uses an objective, rules-based approach to construct a portfolio that, as of each quarterly rebalance, is composed of the ETFs listed in the following table, each advised by the Adviser (collectively, the “Cash Cows ETFs”). Each of the Cash Cows ETFs is an index-based ETF that seeks to track the total return performance, before fees and expenses, of the applicable underlying index listed in the following table (collectively, the “Cash Cows Indexes”). Each Cash Cows Index uses an objective, rules-based methodology to provide exposure to companies with high free cash flow yields (commonly referred to as “cash cows”) selected from the applicable “Equity Universe” as indicated in the following table.
 
Weight
Cash Cows ETF
Cash Cows Index
Equity Universe
20%
Pacer US Cash Cows 100 ETF
Pacer US Cash Cows 100 Index
Russell 1000 Index
20%
Pacer Global Cash Cows Dividend ETF
Pacer Global Cash Cows Dividend Index
FTSE Developed Large Cap Index
20%
Pacer US Small Cap Cash Cows 100 ETF
Pacer US Small Cap Cash Cows Index
S&P Small Cap 600® Index
20%
Pacer US Cash Cows Growth ETF
Pacer US Cash Cows Growth Index
S&P 900 ® Pure Growth Index
20%
Pacer Developed Markets International Cash Cows 100 ETF
Pacer Developed Markets International Cash Cows 100 Index
FTSE Developed ex US Index

The Cash Cows Indexes
Each Cash Cows Index is derived from the component companies of the applicable Equity Universe. The companies in the applicable Equity Universe are screened based on their average projected free cash flows and earnings (if available) over each of the next two fiscal years. Companies for which information on their projected free cash flows or earnings is not available remain eligible for inclusion in the applicable Cash Cows Index. Companies with negative average projected free cash flows or earnings are not eligible for inclusion in the applicable Cash Cows Index. Additionally, financial companies, other than real estate investment trusts (“REITs”), are not eligible for inclusion in the applicable Cash Cows Index. For the Pacer Developed Markets International Cash Cows 100 ETF, companies with a market capitalization of less than $3 billion are also excluded.
 
Free Cash Flow (FCF): A company’s cash flow from operations minus capital expenditures.
Enterprise Value (EV): A company’s market capitalization plus its debt and minus its cash and cash equivalents.
Free Cash Flow Yield: FCF / EV

For each Cash Cows Index, the remaining eligible companies are ranked by their free cash flow yield for the trailing twelve-month period. The equity securities of the 100 applicable companies with the highest free cash flow yield are included in the Pacer US Cash Cows 100 Index, Pacer Developed Markets International Cash Cows 100 Index, and Pacer US Small Cap Cash Cows Index. The equity securities of the 50 applicable companies with the highest free cash flow yield are included in the Pacer US Cash Cows Growth Index. For the Pacer Global Cash Cows Dividend Index, the equity securities of the 300 applicable companies with the highest free cash flow yield are selected and then narrowed to the 100 companies with the highest dividend yield.
 
Each of the Pacer US Cash Cows Growth Index, Pacer US Cash Cows 100 Index, and Pacer US Small Cap Cash Cows Index is rebalanced and reconstituted quarterly, and each of the Pacer Developed Markets International Cash Cows 100 Index and Pacer Global Cash Cows Dividend Index is rebalanced and reconstituted semi-annually.
 
At the time of each rebalance and reconstitution, companies in the Pacer US Cash Cows 100 Index, Pacer US Small Cap Cash Cows Index, and Pacer Developed Markets International Cash Cows 100 Index are weighted in proportion to their trailing twelve month free cash flow, companies in the Pacer Global Cash Cows Dividend Index are weighted based on the aggregate amount of dividends distributed by each company for the trailing twelve-month period, and companies in the Pacer US Cash Cows Growth Index are market capitalization weighted. Companies in each Cash Cows Index are limited at the time of each rebalance and reconstitution to a maximum of 2% weight for any individual company (5% with respect to the Pacer US Cash Cows Growth Index).
 
The Fund’s Investment Strategy
 
Under normal circumstances, at least 80% of the Fund’s total assets (exclusive of collateral held from securities lending) will be invested in (i) the component securities of the Fund of Funds Index (i.e., the Cash Cows ETFs) or (ii) the underlying holdings of one or more Cash Cows ETFs in the same approximate weight as such holdings are assigned in the applicable Cash Cows ETF, adjusted to reflect the weight of such Cash Cows ETF in the Fund of Funds Index. The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Fund of Funds Index, before fees and expenses, will be 95% or better.
 
The Fund will generally use a “replication” strategy to achieve its investment objective, meaning it will invest in all of the component securities of the Index in the same approximate proportion as in the Index.
 
The Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund.
Risk [Heading] rr_RiskHeading Principal Risks of Investing in the Fund
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
You can lose money on your investment in the Fund. The Fund is subject to the risks summarized below. The principal risks are presented in alphabetical order to facilitate finding particular risks and comparing them with other funds. Each risk summarized below is considered a ‘principal risk’ of investing in the Fund, regardless of the order in which they appear. Some or all of these risks may adversely affect the Fund’s net asset value per share (“NAV”), trading price, yield, total return and/or ability to meet its objectives. For more information about the risks of investing in the Fund, see the section in the Fund’s prospectus entitled “Additional Information about the Principal Risks of Investing in the Fund.”
 
Currency Exchange Rate Risk. The Fund’s assets may include exposure to investments denominated in non-U.S. currencies or in securities or other assets that provide exposure to such currencies. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the Fund’s investment and the value of your Fund shares. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the value of an investment in the Fund may change quickly and without warning and you may lose money.

 Equity Market Risk. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific industries, sectors or companies in which the Fund invests. Common stocks are susceptible to general stock market fluctuations and to volatile increases and decreases in value as market confidence in and perceptions of their issuers change.

Foreign Securities Risk. Investments in non-U.S. securities involve certain risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. Investments in non-U.S. securities also may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. These and other factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

 High Portfolio Turnover Risk. At times, the Fund may have a portfolio turnover rate substantially greater than 100%. A high portfolio turnover rate would result in correspondingly greater transaction expenses, including brokerage commissions, dealer mark ups and other transaction costs, on the sale of securities and on reinvestment in other securities and may result in reduced performance and the distribution to shareholders of additional capital gains for tax purposes. These factors may negatively affect the Fund’s performance.

Large-Capitalization Investing Risk. The Fund may invest in the securities of large-capitalization companies. As a result, the Fund’s performance may be adversely affected if securities of large-capitalization companies underperform securities of smaller-capitalization companies or the market as a whole. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion.

 Mid- and Small-Capitalization Investing Risk. The Fund may invest in the securities of mid- and small-capitalization companies. As a result, the Fund’s performance may be adversely affected if securities of mid- and small-capitalization companies underperform securities of other capitalization ranges or the market as a whole. Securities of smaller companies trade in smaller volumes and are often more vulnerable to market volatility than securities of larger companies.

New Fund Risk. The Fund is new with no operating history. As a result, there can be no assurance that the Fund will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Index than it otherwise would at higher asset levels, or it could ultimately liquidate. The Fund’s distributor does not maintain a secondary market in Fund shares.

Non-Diversification Risk. Although the Fund intends to invest in a variety of securities and instruments, the Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance.

 Other Investment Companies Risk. The Fund will incur higher and duplicative expenses when it invests in other investment companies such as ETFs. There is also the risk that the Fund may suffer losses due to the investment practices of the underlying funds. When the Fund invests in other investment companies, the Fund will be subject to substantially the same risks as those associated with the direct ownership of securities held by such investment companies. Investments in ETFs are also subject to the following risks: (i) the market price of an ETF’s shares may trade above or below their net asset value; (ii) an active trading market for an ETF’s shares may not develop or be maintained; and (iii) trading of an ETF’s shares may be halted for a number of reasons.

Passive Investment Risk. The Fund is not actively managed and the Adviser would not sell a security due to current or projected underperformance of a security, industry or sector, unless that security is removed from the Index or the selling of shares of that security is otherwise required upon a reconstitution of the Index in accordance with the Index methodology. The Fund invests in securities included in, the Index, regardless of their investment merits. The Fund does not take defensive positions under any market conditions, including conditions that are adverse to the performance of the Fund.

Sector Risk. To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors.

Shares of the Fund May Trade at Prices Other Than NAV. As with all ETFs, Fund shares may be bought and sold in the secondary market at market prices. The price of Fund shares, like the price of all traded securities, will be subject to factors such as supply and demand, as well as the current value of the Fund’s portfolio holdings. Although it is expected that the market price of the shares of the Fund will approximate the Fund’s NAV, there may be times when the market price of the shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount). This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for shares in the secondary market, in which case such premiums or discounts may be significant.

Style Risk. The Fund’s emphasis on dividend-paying stocks involves the risk that such stocks may fall out of favor with investors and underperform the market. Also, a company may reduce or eliminate its dividend, which may have a negative impact on the Fund’s performance.

Tracking Risk. The Fund’s return may not track the return of the Index for a number of reasons. For example, the Fund incurs a number of operating expenses not applicable to the Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Index. In addition, when the Fund uses a representative sampling approach, the Fund may not be as well correlated with the return of the Index as when the Fund purchases all of the securities in the Index in the proportions in which they are represented in the Index. To the extent the Fund calculates its NAV based on fair value prices and the value of the Index is based on securities’ closing prices on local foreign markets (i.e., the value of the Index is not based on fair value prices), the Fund’s ability to track the Index may be adversely affected.

Tracking Risk. The Fund’s return may not track the return of the Index for a number of reasons. For example, the Fund incurs a number of operating expenses not applicable to the Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Index. In addition, when the Fund uses a representative sampling approach, the Fund may not be as well correlated with the return of the Index as when the Fund purchases all of the securities in the Index in the proportions in which they are represented in the Index. To the extent the Fund calculates its NAV based on fair value prices and the value of the Index is based on securities’ closing prices on local foreign markets (i.e., the value of the Index is not based on fair value prices), the Fund’s ability to track the Index may be adversely affected.

Risk Lose Money [Text] rr_RiskLoseMoney You can lose money on your investment in the Fund.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Although the Fund intends to invest in a variety of securities and instruments, the Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus. In the future, performance information for the Fund will be presented in this section. Updated performance information is available on the Fund’s website at www.paceretfs.com or by calling the Fund toll-free at 1-877-337-0500.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-877-337-0500
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.paceretfs.com
Pacer Cash Cows Fund of Funds ETF | Pacer Cash Cows Fund of Funds ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.15%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none [4]
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.59% [4]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.74%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 66
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 208
Pacer Emerging Markets Cash Cows 100 ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk/Return [Heading] rr_RiskReturnHeading Pacer Emerging Markets Cash Cows 100 ETF
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Pacer Emerging Markets Cash Cows 100 ETF (the “Fund”) is an exchange traded fund (“ETF”) that seeks to track the total return performance, before fees and expenses, of the Pacer Emerging Markets Cash Cows 100 Index (the “Index”).
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. The fees are expressed as a percentage of the Fund’s average net assets. This table and the Example below do not include the brokerage commissions that investors may pay on their purchases and sales of Fund shares.
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. Because the Fund is newly organized, portfolio turnover information is not yet available.
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions This table and the Example below do not include the brokerage commissions that investors may pay on their purchases and sales of Fund shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help retail investors compare the cost of investing in the Fund with the cost of investing in other funds. It illustrates the hypothetical expenses that such investors would incur over various periods if they were to invest $10,000 in the Fund for the time periods indicated and then redeem all of the shares at the end of those periods. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain the same.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies of the Fund
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund employs a “passive management” (or indexing) investment approach designed to track the total return performance, before fees and expenses, of the Index. The Index is based on a proprietary methodology developed by Index Design Group, an affiliate of Pacer Advisors, Inc., the Fund’s investment adviser (the “Adviser”).

The Index
The Index uses an objective, rules-based methodology to provide exposure to large and mid-capitalization companies in emerging markets with high free cash flow yields. Companies with high free cash flow yields are commonly referred to as “cash cows”.
 The initial index universe is derived from the component companies of the FTSE Emerging Markets Index. The Fund defines emerging markets countries as those countries included in the FTSE Emerging Markets Index. As of April 23, 2019, the Index had significant exposure to companies in China, Russia, Taiwan, and Brazil. The initial universe of companies is screened based on their average projected free cash flows and earnings (if available) over each of the next two fiscal years. Companies with no forward year estimates available for free cash flows or earnings will remain in the Index universe. Companies with negative average projected free cash flows or earnings are removed from the Index universe. Additionally, financial companies, other than real estate investment trusts (“REITs”), companies with a market capitalization of less than $2 billion, and companies whose average daily trading value (“ADTV”) for the prior 90 days does not exceed $5 million are excluded from the Index universe.
 
Free Cash Flow (FCF): A company’s cash flow from operations minus capital expenditures.
Enterprise Value (EV): A company’s market capitalization plus its debt and minus its cash and cash equivalents.
Free Cash Flow Yield: FCF / EV
 
The remaining companies are ranked by their free cash flow yield for the trailing twelve-month period. The equity securities of the 100 companies with the highest free cash flow yield (the “Top 100 Companies”) are included in the Index, subject to the exceptions described below.
 
At the time of each rebalance of the Index, the companies included in the Index are weighted in proportion to their trailing twelve-month free cash flow, and weightings are capped at 2% of the weight of the Index for any individual company. Additionally, the Index is limited to a maximum of twenty companies from any individual country and any sector. As of April 23, 2019, the Index had significant exposure to companies in the energy, materials, and information technology sectors. If the Top 100 Companies include more than 20 companies from an individual country or sector (the “Exposure Limit”), the Index will exclude the companies with the lowest free cash flow yield from each country and/or sector needed to meet the Exposure Limit and will include companies outside the Top 100 Companies based on their free cash flow yield until the Index includes 100 companies and satisfies the Exposure Limit. As of March 29, 2019, the companies included in the Index had a market capitalization of $29 million to $261.7 billion. The Index is reconstituted and rebalanced semi-annually as of the close of business on the 3rd Friday of June and December based on data as of the 1st Friday of the applicable rebalance month.
 
The Fund’s Investment Strategy
Under normal circumstances, at least 80% of the Fund’s total assets (exclusive of collateral held from securities lending) will be invested in the component securities of the Index and investments that have economic characteristics that are substantially identical to the economic characteristics of such component securities (e.g., depositary receipts). The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Index, before fees and expenses, will be 95% or better.
 
The Fund will generally use a “replication” strategy to achieve its investment objective, meaning it will invest in all of the component securities of the Index, but may, when the Adviser believes it is in the best interests of the Fund, use a “representative sampling” strategy, meaning it may invest in a sample of the securities in the Index whose risk, return and other characteristics closely resemble the risk, return and other characteristics of the Index as a whole.
 
The Fund may also invest up to 20% of its assets in cash and cash equivalents, other investment companies, as well as securities and other instruments not included in the Index but which the Adviser believes will help the Fund track the Index.
 
The Fund will be considered non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund.
Risk [Heading] rr_RiskHeading Principal Risks of Investing in the Fund
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock
You can lose money on your investment in the Fund. The Fund is subject to the risks summarized below. The principal risks are presented in alphabetical order to facilitate finding particular risks and comparing them with other funds. Each risk summarized below is considered a ‘principal risk’ of investing in the Fund, regardless of the order in which they appear. Some or all of these risks may adversely affect the Fund’s net asset value per share (“NAV”), trading price, yield, total return and/or ability to meet its objectives. For more information about the risks of investing in the Fund, see the section in the Fund’s prospectus entitled “Additional Information about the Principal Risks of Investing in the Funds.”
 
Concentration Risk. If the Index concentrates in an industry or group of industries, the Fund’s investments may be concentrated accordingly. In such event, the value of the Fund’s shares may rise and fall more than the value of shares of a fund that invests in securities of companies in a broader range of industries. In addition, at times, an industry or group of industries in which the Fund is concentrated may be out of favor and underperform other industries or groups of industries.

Currency Exchange Rate Risk. The Fund’s assets may include exposure to investments denominated in non-U.S. currencies or in securities or other assets that provide exposure to such currencies. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the Fund’s investment and the value of your Fund shares. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the value of an investment in the Fund may change quickly and without warning and you may lose money.

Emerging Markets Risk. The Fund may invest in companies organized in emerging market nations. Investments in securities and instruments traded in developing or emerging markets, or that provide exposure to such securities or markets, can involve additional risks relating to political, economic, or regulatory conditions not associated with investments in U.S. securities and instruments or investments in more developed international markets. Such conditions may impact the ability of the Fund to buy, sell or otherwise transfer securities, adversely affect the trading market and price for Shares and cause the Fund to decline in value.

 Equity Market Risk. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific industries, sectors or companies in which the Fund invests. Common stocks are susceptible to general stock market fluctuations and to volatile increases and decreases in value as market confidence in and perceptions of their issuers change.

Foreign Securities Risk. Investments in non-U.S. securities involve certain risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. Investments in non-U.S. securities also may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. These and other factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

Geographic Concentration Risk. To the extent the Fund invests a significant portion of its assets in the securities of companies of a single country or region, it is more likely to be impacted by events or conditions affecting that country or region. Because the Index is a subset of the FTSE Emerging Markets Index, the geographic concentrations of the Index, and consequently the Fund, may be different than those of the broader FTSE Emerging Markets Index.
 
Risks Related to Investing in Brazil. Investments in securities of Brazilian companies are subject to regulatory and economic interventions that the Brazilian government has frequently exercised in the past, including the setting of wage and price controls, blocking access to bank accounts, imposing exchange controls and limiting imports. Investments are also subject to certain restrictions on foreign investment as provided by Brazilian law. The Brazilian economy has historically been subject to high rates of inflation and a high level of debt, all of which may stifle economic growth. Despite rapid development in recent years, Brazil still suffers from high levels of corruption, crime and income disparity. There is the possibility that such conditions may lead to social unrest and political upheaval in the future, which may have adverse effects on the Fund's investments.

Risks Related to Investing China. Investing in securities of Chinese companies involves additional risks, including, but not limited to: the economy of China differs, often unfavorably, from the U.S. economy in such respects as structure, general development, government involvement, wealth distribution, rate of inflation, growth rate, allocation of resources and capital reinvestment, among others; the central government has historically exercised substantial control over virtually every sector of the Chinese economy through administrative regulation and/or state ownership; and actions of the Chinese central and local government authorities continue to have a substantial effect on economic conditions in China. In addition, previously the Chinese government has from time to time taken actions that influence the prices at which certain goods may be sold, encourage companies to invest or concentrate in particular industries, induce mergers between companies in certain industries and induce private companies to publicly offer their securities to increase or continue the rate of economic growth, control the rate of inflation or otherwise regulate economic expansion.

Risks Related to Investing in Russia. Investing in Russian securities involves significant risks, including legal, regulatory and economic risks that are specific to Russia. In addition, investing in Russian securities involves risks associated with the settlement of portfolio transactions and loss of the Fund’s ownership rights in its portfolio securities as a result of the system of share registration and custody in Russia. As a result of recent events involving Ukraine and the Russian Federation, the United States and the European Union have imposed sanctions on certain Russian individuals and entities. Additional broader sanctions may be imposed in the future. These sanctions may result in the decline of the value and liquidity of Russian securities and could also result in the immediate freeze of Russian securities, impairing the ability of the Fund to buy, sell, receive or deliver those securities.

Risks Related to Investing in Taiwan. Taiwan's geographic proximity and history of political contention with China have resulted in ongoing tensions between the two countries. These tensions may materially affect the Taiwanese economy and its securities market. Taiwan's economy is export-oriented, so it depends on an open world trade regime and remains vulnerable to fluctuations in the world economy. Rising labor costs and increasing environmental consciousness have led some labor-intensive industries to relocate to countries with cheaper work forces, and continued labor outsourcing may adversely affect the Taiwanese economy. Taiwan is also subject to the risk of natural disasters, such as typhoons and tsunamis, which could negatively affect the Fund.

High Portfolio Turnover Risk. At times, the Fund may have a portfolio turnover rate substantially greater than 100%. A high portfolio turnover rate would result in correspondingly greater transaction expenses, including brokerage commissions, dealer mark ups and other transaction costs, on the sale of securities and on reinvestment in other securities and may result in reduced performance and the distribution to shareholders of additional capital gains for tax purposes. These factors may negatively affect the Fund’s performance.

 Large-Capitalization Investing Risk. The Fund may invest in the securities of large-capitalization companies. As a result, the Fund’s performance may be adversely affected if securities of large-capitalization companies underperform securities of smaller-capitalization companies or the market as a whole. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion.
 
Mid-Capitalization Investing Risk. The Fund may invest in the securities of mid-capitalization companies. As a result, the Fund’s performance may be adversely affected if securities of mid-capitalization companies underperform securities of other capitalization ranges or the market as a whole. Securities of smaller companies trade in smaller volumes and are often more vulnerable to market volatility than securities of larger companies.

Small-Capitalization Investing Risk. The securities of small-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of larger capitalization companies. The securities of small-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than larger capitalization stocks or the stock market as a whole. There is typically less publicly available information concerning smaller capitalization companies than for larger, more established companies.

New Fund Risk. The Fund is new with no operating history. As a result, there can be no assurance that the Fund will grow to or maintain an economically viable size, in which case it may experience greater tracking error to its Index than it otherwise would at higher asset levels, or it could ultimately liquidate. The Fund’s distributor does not maintain a secondary market in Fund shares.

Non-Diversification Risk. Although the Fund intends to invest in a variety of securities and instruments, the Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance.

Other Investment Companies Risk. The Fund will incur higher and duplicative expenses when it invests in other investment companies such as ETFs. There is also the risk that the Fund may suffer losses due to the investment practices of the underlying funds. When the Fund invests in other investment companies, the Fund will be subject to substantially the same risks as those associated with the direct ownership of securities held by such investment companies. Investments in ETFs are also subject to the following risks: (i) the market price of an ETF’s shares may trade above or below their net asset value; (ii) an active trading market for an ETF’s shares may not develop or be maintained; and (iii) trading of an ETF’s shares may be halted for a number of reasons.

Passive Investment Risk. The Fund is not actively managed and the Adviser would not sell a security due to current or projected underperformance of a security, industry or sector, unless that security is removed from the Index or the selling of shares of that security is otherwise required upon a reconstitution of the Index in accordance with the Index methodology. The Fund invests in securities included in, the Index, regardless of their investment merits. The Fund does not take defensive positions under any market conditions, including conditions that are adverse to the performance of the Fund.

Sector Risk. To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors.

Energy Sector Risk. The Fund may invest in companies in the energy sector, and therefore the performance of the Fund could be negatively impacted by events affecting this sector. The value of securities issued by companies in the energy sector may decline for many reasons, including, among others, changes in energy prices, government regulations, energy conservation efforts and potential civil liabilities.

Materials Sector Risk. The Fund may invest in companies in the materials sector, and therefore the performance of the Fund could be negatively impacted by events affecting this sector. Many companies in this sector are significantly affected by the level and volatility of commodity prices, the exchange value of the dollar, import controls, and worldwide competition. At times, worldwide production of industrial materials has exceeded demand as a result of over-building or economic downturns, leading to poor investment returns or losses. This sector may also be affected by economic cycles, interest rates, resource availability, technical progress, labor relations, and government regulations.

Information Technology Sector Risk. The Fund may invest in companies in the information technology sector, and therefore the performance of the Fund could be negatively impacted by events affecting this sector. Market or economic factors impacting information technology companies and companies that rely heavily on technological advances could have a significant effect on the value of the Fund’s investments. The value of stocks of information technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Stocks of information technology companies and companies that rely heavily on technology, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Information technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability.

Shares of the Fund May Trade at Prices Other Than NAV. As with all ETFs, Fund shares may be bought and sold in the secondary market at market prices. The price of Fund shares, like the price of all traded securities, will be subject to factors such as supply and demand, as well as the current value of the Fund’s portfolio holdings. Although it is expected that the market price of the shares of the Fund will approximate the Fund’s NAV, there may be times when the market price of the shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount). This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for shares in the secondary market, in which case such premiums or discounts may be significant. Because securities held by the Fund trade on foreign exchanges that are closed when the Fund’s primary listing exchange is open, the Fund is likely to experience premiums and discounts greater than those of domestic ETFs.

Tracking Risk. The Fund’s return may not track the return of the Index for a number of reasons. For example, the Fund incurs a number of operating expenses not applicable to the Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Index. In addition, when the Fund uses a representative sampling approach, the Fund may not be as well correlated with the return of the Index as when the Fund purchases all of the securities in the Index in the proportions in which they are represented in the Index. To the extent the Fund calculates its NAV based on fair value prices and the value of the Index is based on securities’ closing prices on local foreign markets (i.e., the value of the Index is not based on fair value prices), the Fund’s ability to track the Index may be adversely affected.
Risk Lose Money [Text] rr_RiskLoseMoney You can lose money on your investment in the Fund.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Although the Fund intends to invest in a variety of securities and instruments, the Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus. In the future, performance information for the Fund will be presented in this section. Updated performance information is available on the Fund’s website at www.paceretfs.com or by calling the Fund toll-free at 1-877-337-0500.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-877-337-0500
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.paceretfs.com
Pacer Emerging Markets Cash Cows 100 ETF | Pacer Emerging Markets Cash Cows 100 ETF  
Prospectus [Line Items] rr_ProspectusLineItems  
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.70%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none [5]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.70%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 72
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 224
[1] Estimated for the current fiscal year.
[2] Estimated for the current fiscal year.
[3] Estimated for the current fiscal year.
[4] Estimated for the current fiscal year.
[5] Estimated for the current fiscal year.