485BPOS

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM N-1A
REGISTRATION STATEMENT (No. 333-139427)
	UNDER THE SECURITIES ACT OF 1933	[X]
	Pre-Effective Amendment No. ____	[ ]
	Post-Effective Amendment No. 34	[X]
and
REGISTRATION STATEMENT (No. 811-21991)
	UNDER THE INVESTMENT COMPANY ACT OF 1940	[X]
	Amendment No. 37	[X]
Fidelity Rutland Square Trust II
(Exact Name of Registrant as Specified in Charter)
82 Devonshire St., Boston, Massachusetts 02109
(Address Of Principal Executive Offices) (Zip Code)
Registrant's Telephone Number: 617-563-7000

Marc R. Bryant, Esq.	With copies to:
Secretary and Chief Legal Officer	Joseph R. Fleming, Esq.
82 Devonshire Street	Dechert LLP
Boston, Massachusetts 02109	200 Clarendon Street, 27th Floor
(Name and Address of Agent for Service)	Boston, MA 02116-5021

It is proposed that this filing will become effective
	(x)	immediately upon filing pursuant to paragraph (b).
	( )	on ( ) pursuant to paragraph (b) at 5:30 p.m. Eastern Time.
	( )	60 days after filing pursuant to paragraph (a)(1) at 5:30 p.m. Eastern Time.
	( )	on ( ) pursuant to paragraph (a)(1) of Rule 485 at 5:30 p.m. Eastern Time.
	( )	75 days after filing pursuant to paragraph (a)(2) at 5:30 p.m. Eastern Time.
	( )	on ( ) pursuant to paragraph (a)(2) of Rule 485 at 5:30 p.m. Eastern Time.
If appropriate, check the following box:
	( )	this post-effective amendment designates a new effective date for a previously filed post-effective amendment.

EXHIBIT INDEX

Exhibit	Exhibit No.
XBRL Instance Document	EX-101.INS
XBRL Taxonomy Extension Schema Document	EX-101.SCH
XBRL Taxonomy Extension Calculation Linkbase Document	EX-101.CAL
XBRL Taxonomy Extension Definition Linkbase Document	EX-101.DEF
XBRL Taxonomy Extension Labels Linkbase Document	EX-101.LAB
XBRL Taxonomy Extension Presentation Linkbase Document	EX-101.PRE

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all of the requirements for the effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Post-Effective Amendment Nos. 34 & 37 to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Boston, and Commonwealth of Massachusetts, on the 31st day of December 2012.

	Fidelity Rutland Square Trust II
	By	/s/Kenneth B. Robins
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||		Kenneth B. Robins, President

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

(Signature)		(Title)	(Date)
/s/Kenneth B. Robins		President and Treasurer	December 31, 2012
Kenneth B. Robins		(Principal Executive Officer)
/s/Nicholas E. Steck		Chief Financial Officer	December 31, 2012
Nicholas E. Steck		(Principal Financial Officer)
/s/Peter C. Aldrich	*	Trustee	December 31, 2012
Peter C. Aldrich
/s/Amy Butte Liebowitz	*	Trustee	December 31, 2012
Amy Butte Liebowitz
/s/Ralph F. Cox	*	Trustee	December 31, 2012
Ralph F. Cox
/s/Karen Kaplan	*	Trustee	December 31, 2012
Karen Kaplan
/s/Roger T. Servison		Trustee	December 31, 2012
Roger T. Servison
/s/Derek Young		Trustee	December 31, 2012
Derek Young

*	By:	/s/Joseph R. Fleming
		Joseph R. Fleming, attorney in fact

POWER OF ATTORNEY

We, the undersigned Trustees of Fidelity Commonwealth Trust II and Fidelity Rutland Square Trust II (the "Trusts"), pursuant to the authority granted to the Trusts' Board of Trustees in Section 4.01(l) of Article IV of the Trusts' Trust Instruments dated September 25, 2006 and March 8, 2006, respectively, hereby constitute and appoint Thomas C. Bogle, Kathryn Cohen, Joseph R. Fleming, and Megan C. Johnson, each of them singly, our true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for us and in our names in the appropriate capacities, all Registration Statements of the Trusts on Form N-1A, or any successors thereto, any and all subsequent Amendments, Pre-Effective Amendments, or Post-Effective Amendments to said Registration Statements or any successors thereto, and any supplements or other instruments in connection therewith, and generally to do all such things in our names and on our behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933 and the Investment Company Act of 1940, and all related requirements of the Securities and Exchange Commission. We hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof. This power of attorney is effective for all documents filed on or after December 1, 2011.

WITNESS our hands on this first day of December, 2011.

/s/Peter C. Aldrich	/s/Amy Butte Liebowitz
Peter C. Aldrich	Amy Butte Liebowitz
/s/Ralph F. Cox	/s/Karen Kaplan
Ralph F. Cox	Karen Kaplan

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Fidelity Rutland Square Trust II
Prospectus Date	rr_ProspectusDate	Dec. 13, 2012
Document Creation Date	dei_DocumentCreationDate	Dec. 12, 2012

XML

F | Strategic Advisers Value Multi-Manager Fund

Fund Summary

Fund/Class:
Strategic Advisers^® Value Multi-Manager Fund/F

Investment Objective

The fund seeks capital appreciation.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	F Strategic Advisers Value Multi-Manager Fund Class F
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		F Strategic Advisers Value Multi-Manager Fund Class F
Management fee (fluctuates based on the fund's allocation among underlying funds and sub-advisers)	[1]	0.53%
Distribution and/or Service (12b-1) fees		none
Other expenses	[2]	0.98%
Acquired fund fees and expenses (fees and expenses of underlying funds)		0.02%
Total annual operating expenses		1.53%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds.

Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:

Expense Example (USD $)	F Strategic Advisers Value Multi-Manager Fund Class F
1 year	156
3 years	483
5 years	834
10 years	1,824

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but it may incur transaction costs when buying or selling non-affiliated funds and other types of securities (including non-affiliated exchange traded funds) directly (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 operating expenses or in the example, affect the fund's performance. For the period from November 16, 2011 to May 31, 2012, the fund's portfolio turnover rate was 14% (annualized) of the average value of its portfolio.

Principal Investment Strategies

• Normally investing primarily in common stocks.
• Investing in companies that are believed to be undervalued in the marketplace in relation to factors such as assets, sales, earnings, growth potential, or cash flow, or in relation to securities of other companies in the same industry (stocks of these companies are often called "value" stocks).
• Normally investing primarily in securities of companies with large market capitalizations (which, for purposes of this fund, are those companies with market capitalizations similar to companies in the Russell 1000^® Value Index).
• Investing in domestic and foreign issuers.
• Implementing investment strategies by investing directly in securities through one or more managers (sub-advisers) or indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below).
• Allocating assets among affiliated funds (i.e., Fidelity funds) and non-affiliated funds that participate in Fidelity's FundsNetwork^®, and non-affiliated exchange traded funds (ETFs) (underlying funds) and sub-advisers.
• Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover.
• Allocating assets among sub-advisers considering factors including, but not limited to, a sub-adviser's investment approach, the characteristics of a sub-adviser's typical investment portfolio, and a sub-adviser's performance patterns in different market environments.

Pursuant to an exemptive order granted by the Securities and Exchange Commission (SEC), Strategic Advisers, Inc. (Strategic Advisers) is permitted, subject to the approval of the Board of Trustees, to enter into new or amended sub-advisory agreements with one or more unaffiliated sub-advisers without obtaining shareholder approval of such agreements. Subject to oversight by the Board of Trustees, Strategic Advisers has the ultimate responsibility to oversee the fund's sub-advisers and recommend their hiring, termination, and replacement. In the event the Board of Trustees approves a sub-advisory agreement with a new unaffiliated sub-adviser, shareholders will be provided with information about the new sub-adviser and sub-advisory agreement.

Principal Investment Risks

• Multiple Sub-Adviser Risk. Separate investment decisions and the resulting purchase and sale activities of the fund's sub-advisers might adversely affect the fund's performance or lead to disadvantageous tax consequences.
• Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments.
• Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.
• Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark.
• "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.
• Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends.

In addition, the fund is considered non-diversified and can invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund.

An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.

Performance

Performance history will be available for the fund after the fund has been in operation for one calendar year.

[1] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 1.00% of the fund's average daily net assets.

[2] Based on estimated amounts for the current fiscal year.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Fidelity Rutland Square Trust II
Prospectus Date	rr_ProspectusDate	Dec. 13, 2012
F | Strategic Advisers Core Multi-Manager Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary Fund/Class: Strategic Advisers® Core Multi-Manager Fund/F
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The fund seeks capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fee Table
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual class operating expenses (expenses that you pay each year as a % of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but may incur transaction costs when buying or selling non-affiliated funds and other types of securities (including non-affiliated exchange traded funds) directly (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 operating expenses or in the example, affect the fund's performance. For the period from November 16, 2011 to May 31, 2012, the fund's portfolio turnover rate was 77% (annualized) of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	77.00%
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Based on estimated amounts for the current fiscal year.
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Normally investing primarily in common stocks. Normally investing primarily in securities of companies with large market capitalizations (which, for purposes of this fund, are those companies with market capitalizations similar to companies in the S&P 500® Index). Investing in domestic and foreign issuers. Investing in either "growth" stocks or "value" stocks or both. Implementing investment strategies by investing directly in securities through one or more managers (sub-advisers) or indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below). Allocating assets among affiliated equity funds (i.e., Fidelity funds) and non-affiliated equity funds that participate in Fidelity's FundsNetwork®, and non-affiliated exchange traded funds (ETFs) (underlying funds) and sub-advisers. Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover. Allocating assets among sub-advisers considering factors including, but not limited to, a sub-adviser's investment approach, the characteristics of a sub-adviser's typical investment portfolio, and a sub-adviser's performance patterns in different market environments. Pursuant to an exemptive order granted by the Securities and Exchange Commission (SEC), Strategic Advisers is permitted, subject to the approval of the Board of Trustees, to enter into new or amended sub-advisory agreements with one or more unaffiliated sub-advisers without obtaining shareholder approval of such agreements. Subject to oversight by the Board of Trustees, Strategic Advisers has the ultimate responsibility to oversee the fund's sub-advisers and recommend their hiring, termination, and replacement. In the event the Board of Trustees approves a sub-advisory agreement with a new unaffiliated sub-adviser, shareholders will be provided with information about the new sub-adviser and sub-advisory agreement.
Risk [Heading]	rr_RiskHeading	Principal Investment Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Multiple Sub-Adviser Risk. Separate investment decisions and the resulting purchase and sale activities of the fund's sub-advisers might adversely affect the fund's performance or lead to disadvantageous tax consequences. Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives. Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments. Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries. Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark. Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends. In addition, the fund is considered non-diversified and can invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund. An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the fund.
Risk Nondiversified Status [Text]	rr_RiskNondiversifiedStatus	In addition, the fund is considered non-diversified and can invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Performance history will be available for the fund after the fund has been in operation for one calendar year.
F | Strategic Advisers Core Multi-Manager Fund | Class F
Risk/Return:	rr_RiskReturnAbstract
Shareholder fees (fees paid directly from your investment)	rr_ShareholderFeeOther	none
Management fee (fluctuates based on the fund's allocation among underlying funds and sub-advisers)	rr_ManagementFeesOverAssets	0.61%	[1]
Distribution and/or Service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.40%	[2]
Total annual operating expenses	rr_ExpensesOverAssets	1.01%
1 year	rr_ExpenseExampleYear01	103
3 years	rr_ExpenseExampleYear03	322
5 years	rr_ExpenseExampleYear05	558
10 years	rr_ExpenseExampleYear10	1,236

[1] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 1.05% of the fund's average daily net assets.

[2] Based on estimated amounts for the current fiscal year.

XML

F | Strategic Advisers Growth Multi-Manager Fund

Fund Summary

Fund/Class:
Strategic Advisers^® Growth Multi-Manager Fund/F

Investment Objective

The fund seeks capital appreciation.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	F Strategic Advisers Growth Multi-Manager Fund Class F
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		F Strategic Advisers Growth Multi-Manager Fund Class F
Management fee (fluctuates based on the fund's allocation among underlying funds and sub-advisers)	[1]	0.55%
Distribution and/or Service (12b-1) fees		none
Other expenses	[2]	0.27%
Total annual operating expenses		0.82%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds.

Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:

Expense Example (USD $)	F Strategic Advisers Growth Multi-Manager Fund Class F
1 year	84
3 years	262
5 years	455
10 years	1,014

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but it may incur transaction costs when buying or selling non-affiliated funds and other types of securities (including non-affiliated exchange traded funds) directly (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 operating expenses or in the example, affect the fund's performance. For the period from November 16, 2011 to May 31, 2012, the fund's portfolio turnover rate was 50% (annualized) of the average value of its portfolio.

Principal Investment Strategies

• Normally investing primarily in common stocks.
• Investing in companies that are believed to have above-average growth potential (stocks of these companies are often called "growth" stocks).
• Normally investing primarily in securities of companies with large market capitalizations (which, for purposes of this fund, are those companies with market capitalizations similar to companies in the Russell 1000^® Growth Index).
• Investing in domestic and foreign issuers.
• Implementing investment strategies by investing directly in securities through one or more managers (sub-advisers) or indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below).
• Allocating assets among affiliated funds (i.e., Fidelity funds) and non-affiliated funds that participate in Fidelity's FundsNetwork^®, and non-affiliated exchange traded funds (ETFs) (underlying funds) and sub-advisers.
• Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover.
• Allocating assets among sub-advisers considering factors including, but not limited to, a sub-adviser's investment approach, the characteristics of a sub-adviser's typical investment portfolio, and a sub-adviser's performance patterns in different market environments.

Pursuant to an exemptive order granted by the Securities and Exchange Commission (SEC), Strategic Advisers, Inc. (Strategic Advisers) is permitted, subject to the approval of the Board of Trustees, to enter into new or amended sub-advisory agreements with one or more unaffiliated sub-advisers without obtaining shareholder approval of such agreements. Subject to oversight by the Board of Trustees, Strategic Advisers has the ultimate responsibility to oversee the fund's sub-advisers and recommend their hiring, termination, and replacement. In the event the Board of Trustees approves a sub-advisory agreement with a new unaffiliated sub-adviser, shareholders will be provided with information about the new sub-adviser and sub-advisory agreement.

Principal Investment Risks

• Multiple Sub-Adviser Risk. Separate investment decisions and the resulting purchase and sale activities of the fund's sub-advisers might adversely affect the fund's performance or lead to disadvantageous tax consequences.
• Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments.
• Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.
• Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark.
• "Growth" Investing. "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks.
• Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends.

In addition, the fund is considered non-diversified and can invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund.

An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.

Performance

Performance history will be available for the fund after the fund has been in operation for one calendar year.

[1] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 1.00% of the fund's average daily net assets.

[2] Based on estimated amounts for the current fiscal year.

XML

F | Strategic Advisers Core Income Multi-Manager Fund

Fund Summary

Fund/Class:
Strategic Advisers^® Core Income Multi-Manager Fund/F

Investment Objective

The fund seeks a high level of current income.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	F Strategic Advisers Core Income Multi-Manager Fund Class F
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		F Strategic Advisers Core Income Multi-Manager Fund Class F
Management fee (fluctuates based on the fund's allocation among underlying funds and sub-advisers)	[1]	0.34%
Distribution and/or Service (12b-1) fees		none
Other expenses	[2]	0.26%
Acquired fund fees and expenses (fees and expenses of underlying funds)	[2]	0.36%
Total annual operating expenses		0.96%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds.

Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:

Expense Example (USD $)	F Strategic Advisers Core Income Multi-Manager Fund Class F
1 year	98
3 years	306

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but may incur transaction costs when buying or selling non-affiliated funds and other types of securities (including non-affiliated exchange traded funds) directly (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 operating expenses or in the example, affect the fund's performance.

Principal Investment Strategies

• Normally investing primarily in investment-grade debt securities (those of medium and high quality) of all types and repurchase agreements for those securities.
• Investing up to 30% of assets in high yield and emerging market debt securities.
• Investing in domestic and foreign issuers.
• Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest rate, total return, and credit default) and futures contracts - and forward-settling securities, to adjust the fund's risk exposure.
• Implementing investment strategies by investing directly in securities through one or more managers (sub-advisers) or indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below).
• Allocating assets among affiliated fixed-income funds (i.e., Fidelity funds) and non-affiliated fixed-income funds that participate in Fidelity's FundsNetwork^®, and non-affiliated exchange traded funds (ETFs) (underlying funds) and sub-advisers.
• Allocating assets among underlying funds and sub-advisers to achieve portfolio characteristics similar to those of the Barclays^® U.S. Aggregate Bond Index.
• Allocating assets among underlying funds and sub-advisers to attempt to diversify its portfolio in terms of different market sectors and maturities.
• Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover.
• Allocating assets among sub-advisers considering factors including, but not limited to, a sub-adviser's investment approach, the characteristics of a sub-adviser's typical investment portfolio, and a sub-adviser's performance patterns in different market environments.
• Analyzing the credit quality of the issuer, the issuer's potential for success, the credit, currency and economic risks of the security and its issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments.

Pursuant to an exemptive order granted by the Securities and Exchange Commission (SEC), Strategic Advisers is permitted, subject to the approval of the Board of Trustees, to enter into new or amended sub-advisory agreements with one or more unaffiliated sub-advisers without obtaining shareholder approval of such agreements. Subject to oversight by the Board of Trustees, Strategic Advisers has the ultimate responsibility to oversee the fund's sub-advisers and recommend their hiring, termination, and replacement. In the event the Board of Trustees approves a sub-advisory agreement with a new unaffiliated sub-adviser, shareholders will be provided with information about the new sub-adviser and sub-advisory agreement.

Principal Investment Risks

• Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.
• Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark.
• Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends.

An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.

Performance

Performance history will be available for the fund after the fund has been in operation for one calendar year.

[1] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 0.65% of the fund's average daily net assets.

[2] Based on estimated amounts for the current fiscal year.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Fidelity Rutland Square Trust II
Prospectus Date	rr_ProspectusDate	Dec. 13, 2012
F | Strategic Advisers Core Income Multi-Manager Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary Fund/Class: Strategic Advisers® Core Income Multi-Manager Fund/F
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The fund seeks a high level of current income.
Expense [Heading]	rr_ExpenseHeading	Fee Table
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual class operating expenses (expenses that you pay each year as a % of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but may incur transaction costs when buying or selling non-affiliated funds and other types of securities (including non-affiliated exchange traded funds) directly (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 operating expenses or in the example, affect the fund's performance.
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Based on estimated amounts for the current fiscal year.
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Normally investing primarily in investment-grade debt securities (those of medium and high quality) of all types and repurchase agreements for those securities. Investing up to 30% of assets in high yield and emerging market debt securities. Investing in domestic and foreign issuers. Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest rate, total return, and credit default) and futures contracts - and forward-settling securities, to adjust the fund's risk exposure. Implementing investment strategies by investing directly in securities through one or more managers (sub-advisers) or indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below). Allocating assets among affiliated fixed-income funds (i.e., Fidelity funds) and non-affiliated fixed-income funds that participate in Fidelity's FundsNetwork®, and non-affiliated exchange traded funds (ETFs) (underlying funds) and sub-advisers. Allocating assets among underlying funds and sub-advisers to achieve portfolio characteristics similar to those of the Barclays® U.S. Aggregate Bond Index. Allocating assets among underlying funds and sub-advisers to attempt to diversify its portfolio in terms of different market sectors and maturities. Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover. Allocating assets among sub-advisers considering factors including, but not limited to, a sub-adviser's investment approach, the characteristics of a sub-adviser's typical investment portfolio, and a sub-adviser's performance patterns in different market environments. Analyzing the credit quality of the issuer, the issuer's potential for success, the credit, currency and economic risks of the security and its issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments. Pursuant to an exemptive order granted by the Securities and Exchange Commission (SEC), Strategic Advisers is permitted, subject to the approval of the Board of Trustees, to enter into new or amended sub-advisory agreements with one or more unaffiliated sub-advisers without obtaining shareholder approval of such agreements. Subject to oversight by the Board of Trustees, Strategic Advisers has the ultimate responsibility to oversee the fund's sub-advisers and recommend their hiring, termination, and replacement. In the event the Board of Trustees approves a sub-advisory agreement with a new unaffiliated sub-adviser, shareholders will be provided with information about the new sub-adviser and sub-advisory agreement.
Risk [Heading]	rr_RiskHeading	Principal Investment Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives. Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease. Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries. Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change. Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell. Leverage Risk. Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly. Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark. Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends. An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Performance history will be available for the fund after the fund has been in operation for one calendar year.
F | Strategic Advisers Core Income Multi-Manager Fund | Class F
Risk/Return:	rr_RiskReturnAbstract
Shareholder fees (fees paid directly from your investment)	rr_ShareholderFeeOther	none
Management fee (fluctuates based on the fund's allocation among underlying funds and sub-advisers)	rr_ManagementFeesOverAssets	0.34%	[1]
Distribution and/or Service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.26%	[2]
Acquired fund fees and expenses (fees and expenses of underlying funds)	rr_AcquiredFundFeesAndExpensesOverAssets	0.36%	[2]
Total annual operating expenses	rr_ExpensesOverAssets	0.96%
1 year	rr_ExpenseExampleYear01	98
3 years	rr_ExpenseExampleYear03	306

[1] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 0.65% of the fund's average daily net assets.

[2] Based on estimated amounts for the current fiscal year.

XML

F | Strategic Advisers Small-Mid Cap Multi-Manager Fund

Fund Summary

Fund/Class:
Strategic Advisers^® Small-Mid Cap Multi-Manager Fund/F

Investment Objective

The fund seeks capital appreciation.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees		F Strategic Advisers Small-Mid Cap Multi-Manager Fund Class F
Redemption fee	[1]	1.50%

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		F Strategic Advisers Small-Mid Cap Multi-Manager Fund Class F
Management fee (fluctuates based on the fund's allocation among underlying funds and sub-advisers)	[1]	0.72%
Distribution and/or Service (12b-1) fees		none
Other expenses	[2]	0.62%
Acquired fund fees and expenses (fees and expenses of underlying funds)	[2]	0.04%
Total annual operating expenses		1.38%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds.

Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:

Expense Example (USD $)	F Strategic Advisers Small-Mid Cap Multi-Manager Fund Class F
1 year	140
3 years	437
5 years	755
10 years	1,657

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but it may incur transaction costs when buying or selling non-affiliated funds and other types of securities (including non-affiliated exchange traded funds) directly (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 operating expenses or in the example, affect the fund's performance. For the period from December 20, 2011 to February 29, 2012, the fund's portfolio turnover rate was 11% of the average value of its portfolio.

Principal Investment Strategies

• Normally investing primarily in common stocks.
• Normally investing at least 80% of assets in securities of small and mid cap companies (which, for purposes of this fund, are those companies with market capitalizations similar to companies in the Russell 2500^® Index) and in shares of other small and mid cap funds.
• Investing in domestic and foreign issuers.
• Investing in either "growth" stocks or "value" stocks or both.
• Implementing investment strategies by investing directly in securities through one or more managers (sub-advisers) or indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below).
• Allocating assets among affiliated small and mid cap funds (i.e., Fidelity funds) and non-affiliated small and mid cap funds that participate in Fidelity's FundsNetwork^®, and non-affiliated exchange traded funds (ETFs) (underlying funds) and sub-advisers.
• Allocating assets among underlying funds and sub-advisers to achieve portfolio characteristics similar to those of the Russell 2500^® Index.
• Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover.
• Allocating assets among sub-advisers considering factors including, but not limited to, a sub-adviser's investment approach, the characteristics of a sub-adviser's typical investment portfolio, and a sub-adviser's performance patterns in different market environments.

Pursuant to an exemptive order granted by the Securities and Exchange Commission (SEC), Strategic Advisers, Inc. (Strategic Advisers) is permitted, subject to the approval of the Board of Trustees, to enter into new or amended sub-advisory agreements with one or more unaffiliated sub-advisers without obtaining shareholder approval of such agreements. Subject to oversight by the Board of Trustees, Strategic Advisers has the ultimate responsibility to oversee the fund's sub-advisers and recommend their hiring, termination, and replacement. In the event the Board of Trustees approves a sub-advisory agreement with a new unaffiliated sub-adviser, shareholders will be provided with information about the new sub-adviser and sub-advisory agreement.

Principal Investment Risks

• Multiple Sub-Adviser Risk. Separate investment decisions and the resulting purchase and sale activities of the fund's sub-advisers might adversely affect the fund's performance or lead to disadvantageous tax consequences.
• Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments.
• Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.
• Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark.
• Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends.
• Mid Cap Investing. The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.
• Small Cap Investing. The value of securities of smaller, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers.

An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.

Performance

Performance history will be available for the fund after the fund has been in operation for one calendar year.

[1] on shares held less than 90 days (as a % of amount redeemed)

[1] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 1.15% of the fund's average daily net assets.

[2] Based on estimated amounts for the current fiscal year.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Fidelity Rutland Square Trust II
Prospectus Date	rr_ProspectusDate	Dec. 13, 2012
F | Strategic Advisers Growth Multi-Manager Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary Fund/Class: Strategic Advisers® Growth Multi-Manager Fund/F
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The fund seeks capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fee Table
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual class operating expenses (expenses that you pay each year as a % of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but it may incur transaction costs when buying or selling non-affiliated funds and other types of securities (including non-affiliated exchange traded funds) directly (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 operating expenses or in the example, affect the fund's performance. For the period from November 16, 2011 to May 31, 2012, the fund's portfolio turnover rate was 50% (annualized) of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	50.00%
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Based on estimated amounts for the current fiscal year.
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Normally investing primarily in common stocks. Investing in companies that are believed to have above-average growth potential (stocks of these companies are often called "growth" stocks). Normally investing primarily in securities of companies with large market capitalizations (which, for purposes of this fund, are those companies with market capitalizations similar to companies in the Russell 1000® Growth Index). Investing in domestic and foreign issuers. Implementing investment strategies by investing directly in securities through one or more managers (sub-advisers) or indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below). Allocating assets among affiliated funds (i.e., Fidelity funds) and non-affiliated funds that participate in Fidelity's FundsNetwork®, and non-affiliated exchange traded funds (ETFs) (underlying funds) and sub-advisers. Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover. Allocating assets among sub-advisers considering factors including, but not limited to, a sub-adviser's investment approach, the characteristics of a sub-adviser's typical investment portfolio, and a sub-adviser's performance patterns in different market environments. Pursuant to an exemptive order granted by the Securities and Exchange Commission (SEC), Strategic Advisers, Inc. (Strategic Advisers) is permitted, subject to the approval of the Board of Trustees, to enter into new or amended sub-advisory agreements with one or more unaffiliated sub-advisers without obtaining shareholder approval of such agreements. Subject to oversight by the Board of Trustees, Strategic Advisers has the ultimate responsibility to oversee the fund's sub-advisers and recommend their hiring, termination, and replacement. In the event the Board of Trustees approves a sub-advisory agreement with a new unaffiliated sub-adviser, shareholders will be provided with information about the new sub-adviser and sub-advisory agreement.
Risk [Heading]	rr_RiskHeading	Principal Investment Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Multiple Sub-Adviser Risk. Separate investment decisions and the resulting purchase and sale activities of the fund's sub-advisers might adversely affect the fund's performance or lead to disadvantageous tax consequences. Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives. Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments. Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries. Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark. "Growth" Investing. "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends. In addition, the fund is considered non-diversified and can invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund. An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the fund.
Risk Nondiversified Status [Text]	rr_RiskNondiversifiedStatus	In addition, the fund is considered non-diversified and can invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Performance history will be available for the fund after the fund has been in operation for one calendar year.
F | Strategic Advisers Growth Multi-Manager Fund | Class F
Risk/Return:	rr_RiskReturnAbstract
Shareholder fees (fees paid directly from your investment)	rr_ShareholderFeeOther	none
Management fee (fluctuates based on the fund's allocation among underlying funds and sub-advisers)	rr_ManagementFeesOverAssets	0.55%	[1]
Distribution and/or Service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.27%	[2]
Total annual operating expenses	rr_ExpensesOverAssets	0.82%
1 year	rr_ExpenseExampleYear01	84
3 years	rr_ExpenseExampleYear03	262
5 years	rr_ExpenseExampleYear05	455
10 years	rr_ExpenseExampleYear10	1,014

[1] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 1.00% of the fund's average daily net assets.

[2] Based on estimated amounts for the current fiscal year.

XML

F | Strategic Advisers Emerging Markets Fund of Funds

Fund Summary

Fund/Class:
Strategic Advisers^® Emerging Markets Fund of Funds/F

Investment Objective

The fund seeks capital appreciation.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees		F Strategic Advisers Emerging Markets Fund of Funds Class F
Redemption fee	[1]	1.50%

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		F Strategic Advisers Emerging Markets Fund of Funds Class F
Management fee	[1]	0.30%
Distribution and/or Service (12b-1) fees		none
Other expenses	[2]	0.48%
Acquired fund fees and expenses (fees and expenses of underlying funds)	[2]	1.20%
Total annual operating expenses		1.98%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds.

Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:

Expense Example (USD $)	F Strategic Advisers Emerging Markets Fund of Funds Class F
1 year	201
3 years	621
5 years	1,068
10 years	2,306

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but it may incur transaction costs when buying or selling non-affiliated funds (or "turns over" its portfolio). If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance.

Principal Investment Strategies

• Normally investing at least 80% of assets in securities of issuers in emerging markets (countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets with similar emerging characteristics) and other investments that are tied economically to emerging markets and in shares of other emerging markets equity funds.
• Normally investing primarily in common stocks.
• Allocating investments across different emerging market countries.
• Implementing investment strategies by investing indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below).
• Allocating assets among affiliated emerging markets funds (i.e., Fidelity funds) and non-affiliated emerging markets funds that typically participate in Fidelity's FundsNetwork^®, non-affiliated exchange traded funds (ETFs), and closed-end funds (underlying funds).
• Allocating assets among underlying funds to attempt to diversify its portfolio in terms of market capitalization, investment style, and geographic region.
• Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover.

Principal Investment Risks

• Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments.
• Foreign and Emerging Market Risk. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Geographic Exposure. Social, political, and economic conditions and changes in regulatory, tax, or economic policy in a country or region could significantly affect the market in that country or region.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.
• Investing in ETFs and Closed-End Funds. ETFs and closed-end funds may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark.
• Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends.

An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.

Performance

Performance history will be available for the fund after the fund has been in operation for one calendar year.

[1] on shares held less than 90 days (as a % of amount redeemed)

[1] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 1.25% of the fund's average daily net assets.

[2] Based on estimated amounts for the current fiscal year.

XML

F | Strategic Advisers International Multi-Manager Fund

Fund Summary

Fund/Class:
Strategic Advisers^® International Multi-Manager Fund/F

Investment Objective

The fund seeks capital appreciation.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees		F Strategic Advisers International Multi-Manager Fund Class F
Redemption fee	[1]	1.00%

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		F Strategic Advisers International Multi-Manager Fund Class F
Management fee (fluctuates based on the fund's allocation among underlying funds and sub-advisers)	[1]	0.70%
Distribution and/or Service (12b-1) fees		none
Other expenses	[2]	0.51%
Acquired fund fees and expenses (fees and expenses of underlying funds)	[2]	0.02%
Total annual operating expenses		1.23%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds.

Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:

Expense Example (USD $)	F Strategic Advisers International Multi-Manager Fund Class F
1 year	125
3 years	390
5 years	676
10 years	1,489

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but may incur transaction costs when buying or selling non-affiliated funds and other types of securities (including non-affiliated exchange traded funds) directly (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 operating expenses or in the example, affect the fund's performance.

Principal Investment Strategies

• Normally investing primarily in non-U.S. securities, including securities of issuers located in emerging markets.
• Normally investing primarily in common stocks.
• Allocating investments across different countries and regions.
• Implementing investment strategies by investing directly in securities through one or more managers (sub-advisers) or indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below).
• Allocating assets among affiliated international funds (i.e., Fidelity funds) and non-affiliated international funds that participate in Fidelity's FundsNetwork^®, and non-affiliated exchange traded funds (ETFs) (underlying funds) and sub-advisers.
• Allocating assets among underlying funds and sub-advisers to attempt to diversify its portfolio in terms of market capitalization, investment style, and geographic region.
• Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover.
• Allocating assets among sub-advisers considering factors including, but not limited to, a sub-adviser's investment approach, the characteristics of a sub-adviser's typical investment portfolio, and a sub-adviser's performance patterns in different market environments.

Pursuant to an exemptive order granted by the Securities and Exchange Commission (SEC), Strategic Advisers, Inc. (Strategic Advisers) is permitted, subject to the approval of the Board of Trustees, to enter into new or amended sub-advisory agreements with one or more unaffiliated sub-advisers without obtaining shareholder approval of such agreements. Subject to oversight by the Board of Trustees, Strategic Advisers has the ultimate responsibility to oversee the fund's sub-advisers and recommend their hiring, termination, and replacement. In the event the Board of Trustees approves a sub-advisory agreement with a new unaffiliated sub-adviser, shareholders will be provided with information about the new sub-adviser and sub-advisory agreement.

Principal Investment Risks

• Multiple Sub-Adviser Risk. Separate investment decisions and the resulting purchase and sale activities of the fund's sub-advisers might adversely affect the fund's performance or lead to disadvantageous tax consequences.
• Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.
• Geographic Exposure. Social, political, and economic conditions and changes in regulatory, tax, or economic policy in a country or region could significantly affect the market in that country or region.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. The value of securities of smaller issuers can be more volatile than that of larger issuers.
• Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark.
• Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends.

An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.

Performance

Performance history will be available for the fund after the fund has been in operation for one calendar year.

[1] on shares held less than 30 days (as a % of amount redeemed)

[1] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 1.05% of the fund's average daily net assets.

[2] Based on estimated amounts for the current fiscal year.

XML

Document and Entity Information	12 Months Ended
	Dec. 13, 2012
Risk/Return:
Document Type	485BPOS
Document Period End Date	Dec. 12, 2012
Registrant Name	Fidelity Rutland Square Trust II
Central Index Key	0001364924
Amendment Flag	false
Document Creation Date	Dec. 12, 2012
Document Effective Date	Dec. 13, 2012
Prospectus Date	Dec. 13, 2012

XML

F | Strategic Advisers Income Opportunities Fund of Funds

Fund Summary

Fund/Class:
Strategic Advisers^® Income Opportunities Fund of Funds/F

Investment Objective

The fund seeks a high level of current income. The fund may also seek capital appreciation.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees		F Strategic Advisers Income Opportunities Fund of Funds Class F
Redemption fee	[1]	1.00%

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Fund Operating Expenses		F Strategic Advisers Income Opportunities Fund of Funds Class F
Management fee	[1]	0.30%
Distribution and/or Service (12b-1) fees		none
Other expenses	[2]	2.06%
Acquired fund fees and expenses (fees and expenses of underlying funds)	[2]	0.72%
Total annual operating expenses		3.08%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds.

Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:

Expense Example (USD $)	F Strategic Advisers Income Opportunities Fund of Funds Class F
1 year	311
3 years	951

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but it may incur transaction costs when buying or selling non-affiliated funds (or "turns over" its portfolio). If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance.

Principal Investment Strategies

• Normally investing primarily in income-producing debt securities, preferred stocks, and convertible securities, with an emphasis on lower-quality debt securities.
• Potentially investing in non-income producing securities, including defaulted securities and common stocks.
• Investing in companies in troubled or uncertain financial condition.
• Investing in domestic and foreign issuers.
• Implementing investment strategies by investing indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below).
• Allocating assets among affiliated high yield funds (i.e., Fidelity funds) and non-affiliated high yield funds that participate in Fidelity's FundsNetwork^®, and non-affiliated exchange traded funds (ETFs) (underlying funds).
• Allocating assets among underlying funds to achieve portfolio characteristics similar to those of The BofA Merrill Lynch^SM US High Yield Constrained Index.
• Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover.

Principal Investment Risks

• Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments.
• Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease.
• Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.
• Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark.

An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.

Performance

Performance history will be available for the fund after the fund has been in operation for one calendar year.

[1] on shares held less than 90 days (as a % of amount redeemed)

[1] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 0.80% of the fund's average daily net assets.

[2] Based on estimated amounts for the current fiscal year.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Fidelity Rutland Square Trust II
Prospectus Date	rr_ProspectusDate	Dec. 13, 2012
F | Strategic Advisers Emerging Markets Fund of Funds
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary Fund/Class: Strategic Advisers® Emerging Markets Fund of Funds/F
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The fund seeks capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fee Table
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual class operating expenses (expenses that you pay each year as a % of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but it may incur transaction costs when buying or selling non-affiliated funds (or "turns over" its portfolio). If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance.
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Based on estimated amounts for the current fiscal year.
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Normally investing at least 80% of assets in securities of issuers in emerging markets (countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets with similar emerging characteristics) and other investments that are tied economically to emerging markets and in shares of other emerging markets equity funds. Normally investing primarily in common stocks. Allocating investments across different emerging market countries. Implementing investment strategies by investing indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below). Allocating assets among affiliated emerging markets funds (i.e., Fidelity funds) and non-affiliated emerging markets funds that typically participate in Fidelity's FundsNetwork®, non-affiliated exchange traded funds (ETFs), and closed-end funds (underlying funds). Allocating assets among underlying funds to attempt to diversify its portfolio in terms of market capitalization, investment style, and geographic region. Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover.
Risk [Heading]	rr_RiskHeading	Principal Investment Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives. Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments. Foreign and Emerging Market Risk. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile. Geographic Exposure. Social, political, and economic conditions and changes in regulatory, tax, or economic policy in a country or region could significantly affect the market in that country or region. Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries. Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. Investing in ETFs and Closed-End Funds. ETFs and closed-end funds may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark. Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends. An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Performance history will be available for the fund after the fund has been in operation for one calendar year.
F | Strategic Advisers Emerging Markets Fund of Funds | Class F
Risk/Return:	rr_RiskReturnAbstract
Redemption fee	rr_RedemptionFeeOverRedemption	1.50%	[1]
Management fee	rr_ManagementFeesOverAssets	0.30%	[2]
Distribution and/or Service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.48%	[3]
Acquired fund fees and expenses (fees and expenses of underlying funds)	rr_AcquiredFundFeesAndExpensesOverAssets	1.20%	[3]
Total annual operating expenses	rr_ExpensesOverAssets	1.98%
1 year	rr_ExpenseExampleYear01	201
3 years	rr_ExpenseExampleYear03	621
5 years	rr_ExpenseExampleYear05	1,068
10 years	rr_ExpenseExampleYear10	2,306

[1] on shares held less than 90 days (as a % of amount redeemed)

[2] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 1.25% of the fund's average daily net assets.

[3] Based on estimated amounts for the current fiscal year.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Fidelity Rutland Square Trust II
Prospectus Date	rr_ProspectusDate	Dec. 13, 2012
F | Strategic Advisers Income Opportunities Fund of Funds
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary Fund/Class: Strategic Advisers® Income Opportunities Fund of Funds/F
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The fund seeks a high level of current income. The fund may also seek capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fee Table
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual class operating expenses (expenses that you pay each year as a % of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but it may incur transaction costs when buying or selling non-affiliated funds (or "turns over" its portfolio). If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance.
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Based on estimated amounts for the current fiscal year.
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Normally investing primarily in income-producing debt securities, preferred stocks, and convertible securities, with an emphasis on lower-quality debt securities. Potentially investing in non-income producing securities, including defaulted securities and common stocks. Investing in companies in troubled or uncertain financial condition. Investing in domestic and foreign issuers. Implementing investment strategies by investing indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below). Allocating assets among affiliated high yield funds (i.e., Fidelity funds) and non-affiliated high yield funds that participate in Fidelity's FundsNetwork®, and non-affiliated exchange traded funds (ETFs) (underlying funds). Allocating assets among underlying funds to achieve portfolio characteristics similar to those of The BofA Merrill LynchSM US High Yield Constrained Index. Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover.
Risk [Heading]	rr_RiskHeading	Principal Investment Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives. Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments. Interest Rate Changes. Interest rate increases can cause the price of a debt security to decrease. Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries. Prepayment. The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change. Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer. The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell. Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark. An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Performance history will be available for the fund after the fund has been in operation for one calendar year.
F | Strategic Advisers Income Opportunities Fund of Funds | Class F
Risk/Return:	rr_RiskReturnAbstract
Redemption fee	rr_RedemptionFeeOverRedemption	1.00%	[1]
Management fee	rr_ManagementFeesOverAssets	0.30%	[2]
Distribution and/or Service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	2.06%	[3]
Acquired fund fees and expenses (fees and expenses of underlying funds)	rr_AcquiredFundFeesAndExpensesOverAssets	0.72%	[3]
Total annual operating expenses	rr_ExpensesOverAssets	3.08%
1 year	rr_ExpenseExampleYear01	311
3 years	rr_ExpenseExampleYear03	951

[1] on shares held less than 90 days (as a % of amount redeemed)

[2] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 0.80% of the fund's average daily net assets.

[3] Based on estimated amounts for the current fiscal year.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Fidelity Rutland Square Trust II
Prospectus Date	rr_ProspectusDate	Dec. 13, 2012
F | Strategic Advisers International Multi-Manager Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary Fund/Class: Strategic Advisers® International Multi-Manager Fund/F
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The fund seeks capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fee Table
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual class operating expenses (expenses that you pay each year as a % of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but may incur transaction costs when buying or selling non-affiliated funds and other types of securities (including non-affiliated exchange traded funds) directly (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 operating expenses or in the example, affect the fund's performance.
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Based on estimated amounts for the current fiscal year.
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Normally investing primarily in non-U.S. securities, including securities of issuers located in emerging markets. Normally investing primarily in common stocks. Allocating investments across different countries and regions. Implementing investment strategies by investing directly in securities through one or more managers (sub-advisers) or indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below). Allocating assets among affiliated international funds (i.e., Fidelity funds) and non-affiliated international funds that participate in Fidelity's FundsNetwork®, and non-affiliated exchange traded funds (ETFs) (underlying funds) and sub-advisers. Allocating assets among underlying funds and sub-advisers to attempt to diversify its portfolio in terms of market capitalization, investment style, and geographic region. Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover. Allocating assets among sub-advisers considering factors including, but not limited to, a sub-adviser's investment approach, the characteristics of a sub-adviser's typical investment portfolio, and a sub-adviser's performance patterns in different market environments. Pursuant to an exemptive order granted by the Securities and Exchange Commission (SEC), Strategic Advisers, Inc. (Strategic Advisers) is permitted, subject to the approval of the Board of Trustees, to enter into new or amended sub-advisory agreements with one or more unaffiliated sub-advisers without obtaining shareholder approval of such agreements. Subject to oversight by the Board of Trustees, Strategic Advisers has the ultimate responsibility to oversee the fund's sub-advisers and recommend their hiring, termination, and replacement. In the event the Board of Trustees approves a sub-advisory agreement with a new unaffiliated sub-adviser, shareholders will be provided with information about the new sub-adviser and sub-advisory agreement.
Risk [Heading]	rr_RiskHeading	Principal Investment Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Multiple Sub-Adviser Risk. Separate investment decisions and the resulting purchase and sale activities of the fund's sub-advisers might adversely affect the fund's performance or lead to disadvantageous tax consequences. Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives. Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments. Foreign Exposure. Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile. Geographic Exposure. Social, political, and economic conditions and changes in regulatory, tax, or economic policy in a country or region could significantly affect the market in that country or region. Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries. Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. The value of securities of smaller issuers can be more volatile than that of larger issuers. Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark. Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends. An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Performance history will be available for the fund after the fund has been in operation for one calendar year.
F | Strategic Advisers International Multi-Manager Fund | Class F
Risk/Return:	rr_RiskReturnAbstract
Redemption fee	rr_RedemptionFeeOverRedemption	1.00%	[1]
Management fee (fluctuates based on the fund's allocation among underlying funds and sub-advisers)	rr_ManagementFeesOverAssets	0.70%	[2]
Distribution and/or Service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.51%	[3]
Acquired fund fees and expenses (fees and expenses of underlying funds)	rr_AcquiredFundFeesAndExpensesOverAssets	0.02%	[3]
Total annual operating expenses	rr_ExpensesOverAssets	1.23%
1 year	rr_ExpenseExampleYear01	125
3 years	rr_ExpenseExampleYear03	390
5 years	rr_ExpenseExampleYear05	676
10 years	rr_ExpenseExampleYear10	1,489

[1] on shares held less than 30 days (as a % of amount redeemed)

[2] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 1.05% of the fund's average daily net assets.

[3] Based on estimated amounts for the current fiscal year.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Fidelity Rutland Square Trust II
Prospectus Date	rr_ProspectusDate	Dec. 13, 2012
F | Strategic Advisers Small-Mid Cap Multi-Manager Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary Fund/Class: Strategic Advisers® Small-Mid Cap Multi-Manager Fund/F
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The fund seeks capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fee Table
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The following table describes the fees and expenses that may be incurred when you buy, hold, or sell shares of the fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual class operating expenses (expenses that you pay each year as a % of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but it may incur transaction costs when buying or selling non-affiliated funds and other types of securities (including non-affiliated exchange traded funds) directly (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 operating expenses or in the example, affect the fund's performance. For the period from December 20, 2011 to February 29, 2012, the fund's portfolio turnover rate was 11% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	11.00%
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Based on estimated amounts for the current fiscal year.
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Normally investing primarily in common stocks. Normally investing at least 80% of assets in securities of small and mid cap companies (which, for purposes of this fund, are those companies with market capitalizations similar to companies in the Russell 2500® Index) and in shares of other small and mid cap funds. Investing in domestic and foreign issuers. Investing in either "growth" stocks or "value" stocks or both. Implementing investment strategies by investing directly in securities through one or more managers (sub-advisers) or indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below). Allocating assets among affiliated small and mid cap funds (i.e., Fidelity funds) and non-affiliated small and mid cap funds that participate in Fidelity's FundsNetwork®, and non-affiliated exchange traded funds (ETFs) (underlying funds) and sub-advisers. Allocating assets among underlying funds and sub-advisers to achieve portfolio characteristics similar to those of the Russell 2500® Index. Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover. Allocating assets among sub-advisers considering factors including, but not limited to, a sub-adviser's investment approach, the characteristics of a sub-adviser's typical investment portfolio, and a sub-adviser's performance patterns in different market environments. Pursuant to an exemptive order granted by the Securities and Exchange Commission (SEC), Strategic Advisers, Inc. (Strategic Advisers) is permitted, subject to the approval of the Board of Trustees, to enter into new or amended sub-advisory agreements with one or more unaffiliated sub-advisers without obtaining shareholder approval of such agreements. Subject to oversight by the Board of Trustees, Strategic Advisers has the ultimate responsibility to oversee the fund's sub-advisers and recommend their hiring, termination, and replacement. In the event the Board of Trustees approves a sub-advisory agreement with a new unaffiliated sub-adviser, shareholders will be provided with information about the new sub-adviser and sub-advisory agreement.
Risk [Heading]	rr_RiskHeading	Principal Investment Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Multiple Sub-Adviser Risk. Separate investment decisions and the resulting purchase and sale activities of the fund's sub-advisers might adversely affect the fund's performance or lead to disadvantageous tax consequences. Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives. Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments. Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries. Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark. Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends. Mid Cap Investing. The value of securities of medium size, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers. Small Cap Investing. The value of securities of smaller, less well-known issuers can perform differently from the market as a whole and other types of stocks and can be more volatile than that of larger issuers. An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Performance history will be available for the fund after the fund has been in operation for one calendar year.
F | Strategic Advisers Small-Mid Cap Multi-Manager Fund | Class F
Risk/Return:	rr_RiskReturnAbstract
Redemption fee	rr_RedemptionFeeOverRedemption	1.50%	[1]
Management fee (fluctuates based on the fund's allocation among underlying funds and sub-advisers)	rr_ManagementFeesOverAssets	0.72%	[2]
Distribution and/or Service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.62%	[3]
Acquired fund fees and expenses (fees and expenses of underlying funds)	rr_AcquiredFundFeesAndExpensesOverAssets	0.04%	[3]
Total annual operating expenses	rr_ExpensesOverAssets	1.38%
1 year	rr_ExpenseExampleYear01	140
3 years	rr_ExpenseExampleYear03	437
5 years	rr_ExpenseExampleYear05	755
10 years	rr_ExpenseExampleYear10	1,657

[1] on shares held less than 90 days (as a % of amount redeemed)

[2] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 1.15% of the fund's average daily net assets.

[3] Based on estimated amounts for the current fiscal year.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Fidelity Rutland Square Trust II
Prospectus Date	rr_ProspectusDate	Dec. 13, 2012
F | Strategic Advisers Value Multi-Manager Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Fund Summary Fund/Class: Strategic Advisers® Value Multi-Manager Fund/F
Objective [Heading]	rr_ObjectiveHeading	Investment Objective
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The fund seeks capital appreciation.
Expense [Heading]	rr_ExpenseHeading	Fee Table
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual class operating expenses (expenses that you pay each year as a % of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but it may incur transaction costs when buying or selling non-affiliated funds and other types of securities (including non-affiliated exchange traded funds) directly (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 operating expenses or in the example, affect the fund's performance. For the period from November 16, 2011 to May 31, 2012, the fund's portfolio turnover rate was 14% (annualized) of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	14.00%
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Based on estimated amounts for the current fiscal year.
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Normally investing primarily in common stocks. Investing in companies that are believed to be undervalued in the marketplace in relation to factors such as assets, sales, earnings, growth potential, or cash flow, or in relation to securities of other companies in the same industry (stocks of these companies are often called "value" stocks). Normally investing primarily in securities of companies with large market capitalizations (which, for purposes of this fund, are those companies with market capitalizations similar to companies in the Russell 1000® Value Index). Investing in domestic and foreign issuers. Implementing investment strategies by investing directly in securities through one or more managers (sub-advisers) or indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below). Allocating assets among affiliated funds (i.e., Fidelity funds) and non-affiliated funds that participate in Fidelity's FundsNetwork®, and non-affiliated exchange traded funds (ETFs) (underlying funds) and sub-advisers. Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover. Allocating assets among sub-advisers considering factors including, but not limited to, a sub-adviser's investment approach, the characteristics of a sub-adviser's typical investment portfolio, and a sub-adviser's performance patterns in different market environments. Pursuant to an exemptive order granted by the Securities and Exchange Commission (SEC), Strategic Advisers, Inc. (Strategic Advisers) is permitted, subject to the approval of the Board of Trustees, to enter into new or amended sub-advisory agreements with one or more unaffiliated sub-advisers without obtaining shareholder approval of such agreements. Subject to oversight by the Board of Trustees, Strategic Advisers has the ultimate responsibility to oversee the fund's sub-advisers and recommend their hiring, termination, and replacement. In the event the Board of Trustees approves a sub-advisory agreement with a new unaffiliated sub-adviser, shareholders will be provided with information about the new sub-adviser and sub-advisory agreement.
Risk [Heading]	rr_RiskHeading	Principal Investment Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Multiple Sub-Adviser Risk. Separate investment decisions and the resulting purchase and sale activities of the fund's sub-advisers might adversely affect the fund's performance or lead to disadvantageous tax consequences. Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives. Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments. Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries. Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark. "Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time. Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends. In addition, the fund is considered non-diversified and can invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund. An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money by investing in the fund.
Risk Nondiversified Status [Text]	rr_RiskNondiversifiedStatus	In addition, the fund is considered non-diversified and can invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Performance history will be available for the fund after the fund has been in operation for one calendar year.
F | Strategic Advisers Value Multi-Manager Fund | Class F
Risk/Return:	rr_RiskReturnAbstract
Shareholder fees (fees paid directly from your investment)	rr_ShareholderFeeOther	none
Management fee (fluctuates based on the fund's allocation among underlying funds and sub-advisers)	rr_ManagementFeesOverAssets	0.53%	[1]
Distribution and/or Service (12b-1) fees	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses	rr_OtherExpensesOverAssets	0.98%	[2]
Acquired fund fees and expenses (fees and expenses of underlying funds)	rr_AcquiredFundFeesAndExpensesOverAssets	0.02%
Total annual operating expenses	rr_ExpensesOverAssets	1.53%
1 year	rr_ExpenseExampleYear01	156
3 years	rr_ExpenseExampleYear03	483
5 years	rr_ExpenseExampleYear05	834
10 years	rr_ExpenseExampleYear10	1,824

[1] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 1.00% of the fund's average daily net assets.

[2] Based on estimated amounts for the current fiscal year.

XML

F | Strategic Advisers Core Multi-Manager Fund

Fund Summary

Fund/Class:
Strategic Advisers^® Core Multi-Manager Fund/F

Investment Objective

The fund seeks capital appreciation.

Fee Table

The following table describes the fees and expenses that may be incurred when you buy and hold shares of the fund.

Shareholder fees
(fees paid directly from your investment)

Shareholder Fees (USD $)	F Strategic Advisers Core Multi-Manager Fund Class F
Shareholder fees (fees paid directly from your investment)	none

Annual class operating expenses
(expenses that you pay each year as a % of the value of your investment)

Annual Class Operating Expenses		F Strategic Advisers Core Multi-Manager Fund Class F
Management fee (fluctuates based on the fund's allocation among underlying funds and sub-advisers)	[1]	0.61%
Distribution and/or Service (12b-1) fees		none
Other expenses	[2]	0.40%
Total annual operating expenses		1.01%

This example helps compare the cost of investing in the fund with the cost of investing in other mutual funds.

Let's say, hypothetically, that the annual return for shares of the fund is 5% and that your shareholder fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:

Expense Example (USD $)	F Strategic Advisers Core Multi-Manager Fund Class F
1 year	103
3 years	322
5 years	558
10 years	1,236

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of affiliated funds but may incur transaction costs when buying or selling non-affiliated funds and other types of securities (including non-affiliated exchange traded funds) directly (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 operating expenses or in the example, affect the fund's performance. For the period from November 16, 2011 to May 31, 2012, the fund's portfolio turnover rate was 77% (annualized) of the average value of its portfolio.

Principal Investment Strategies

• Normally investing primarily in common stocks.
• Normally investing primarily in securities of companies with large market capitalizations (which, for purposes of this fund, are those companies with market capitalizations similar to companies in the S&P 500^® Index).
• Investing in domestic and foreign issuers.
• Investing in either "growth" stocks or "value" stocks or both.
• Implementing investment strategies by investing directly in securities through one or more managers (sub-advisers) or indirectly in securities through one or more other funds, referred to as underlying funds, which in turn invest directly in securities (as described below).
• Allocating assets among affiliated equity funds (i.e., Fidelity funds) and non-affiliated equity funds that participate in Fidelity's FundsNetwork^®, and non-affiliated exchange traded funds (ETFs) (underlying funds) and sub-advisers.
• Allocating assets among underlying funds using proprietary fundamental and quantitative fund research, considering factors including fund performance, a fund manager's experience and investment style, fund company infrastructure, and fund characteristics such as expense ratio, asset size, and portfolio turnover.
• Allocating assets among sub-advisers considering factors including, but not limited to, a sub-adviser's investment approach, the characteristics of a sub-adviser's typical investment portfolio, and a sub-adviser's performance patterns in different market environments.

Pursuant to an exemptive order granted by the Securities and Exchange Commission (SEC), Strategic Advisers is permitted, subject to the approval of the Board of Trustees, to enter into new or amended sub-advisory agreements with one or more unaffiliated sub-advisers without obtaining shareholder approval of such agreements. Subject to oversight by the Board of Trustees, Strategic Advisers has the ultimate responsibility to oversee the fund's sub-advisers and recommend their hiring, termination, and replacement. In the event the Board of Trustees approves a sub-advisory agreement with a new unaffiliated sub-adviser, shareholders will be provided with information about the new sub-adviser and sub-advisory agreement.

Principal Investment Risks

• Multiple Sub-Adviser Risk. Separate investment decisions and the resulting purchase and sale activities of the fund's sub-advisers might adversely affect the fund's performance or lead to disadvantageous tax consequences.
• Investing in Other Funds. Regulatory restrictions may limit the amount that one fund can invest in another, which means that the fund's manager may not be able to invest as much as it wants to in some other funds. The fund bears all risks of investment strategies employed by the underlying funds, including the risk that the underlying funds will not meet their investment objectives.
• Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market and different types of securities can react differently to these developments.
• Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
• Industry Exposure. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.
• Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.
• Investing in ETFs. ETFs may trade in the secondary market at prices below the value of their underlying portfolios and may not be liquid. ETFs that track an index are subject to tracking error and may be unable to sell poorly performing assets that are included in their index or other benchmark.
• Quantitative Investing. Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends.

In addition, the fund is considered non-diversified and can invest a greater portion of assets in securities of a smaller number of individual issuers than a diversified fund. As a result, changes in the market value of a single investment could cause greater fluctuations in share price than would occur in a more diversified fund.

An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. You could lose money by investing in the fund.

Performance

Performance history will be available for the fund after the fund has been in operation for one calendar year.

[1] Strategic Advisers, Inc. (Strategic Advisers) has contractually agreed that the fund's maximum aggregate annual management fee will not exceed 1.05% of the fund's average daily net assets.

[2] Based on estimated amounts for the current fiscal year.