485BPOS

Registration Nos. 033-10992/811-4998

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 /X/

Post-Effective Amendment No. 39 /X/

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 /X/

Amendment No. 43 /X/

T. ROWE PRICE SPECTRUM FUND, INC.

Exact Name of Registrant as Specified in Charter

100 East Pratt Street, Baltimore, Maryland 21202
Address of Principal Executive Offices

410-345-2000
Registrant’s Telephone Number, Including Area Code

David Oestreicher

100 East Pratt Street, Baltimore, Maryland 21202
Name and Address of Agent for Service

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

/X/Immediately upon filing pursuant to paragraph (b)

//On (date) pursuant to paragraph (b)

//60 days after filing pursuant to paragraph (a)(1)

//On (date) pursuant to paragraph (a)(1)

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

//On (date) pursuant to paragraph (a)(2) of Rule 485

If appropriate, check the following box:

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

Page 2

EXHIBITS

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

Page 3

Signatures

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of Baltimore, State of Maryland, this May 15, 2017.

T. ROWE PRICE SPECTRUM FUND, INC.

/s/Edward C. Bernard

By:Edward C. Bernard

Chairman of the Board

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

Signature	Title	Date
/s/Edward C. Bernard	Chairman of the Board	May 15, 2017
Edward C. Bernard	(Chief Executive Officer)
/s/Catherine D. Mathews	Treasurer	May 15, 2017
Catherine D. Mathews	(Chief Financial Officer)
	and Vice President
*
Anthony W. Deering	Director	May 15, 2017
*
Bruce W. Duncan	Director	May 15, 2017
*
Robert J. Gerrard, Jr.	Director	May 15, 2017
*
Paul F. McBride	Director	May 15, 2017
*
Cecilia E. Rouse	Director	May 15, 2017
*
John G. Schreiber	Director	May 15, 2017
*
Mark. R. Tercek	Director	May 15, 2017

Page 4

*/s/David Oestreicher	Vice President and	May 15, 2017
David Oestreicher	Attorney-In-Fact

Page 5

T. ROWE PRICE BALANCED FUND, INC.

T. ROWE PRICE BLUE CHIP GROWTH FUND, INC.

T. ROWE PRICE CALIFORNIA TAX-FREE INCOME TRUST

T. ROWE PRICE CAPITAL APPRECIATION FUND

T. ROWE PRICE CAPITAL OPPORTUNITY FUND, INC.

T. ROWE PRICE CORPORATE INCOME FUND, INC.

T. ROWE PRICE CREDIT OPPORTUNITIES FUND, INC.

T. ROWE PRICE DIVERSIFIED MID-CAP GROWTH FUND, INC.

T. ROWE PRICE DIVIDEND GROWTH FUND, INC.

T. ROWE PRICE EQUITY INCOME FUND

T. ROWE PRICE EQUITY SERIES, INC.

T. ROWE PRICE FINANCIAL SERVICES FUND, INC.

T. ROWE PRICE FIXED INCOME SERIES, INC.

T. ROWE PRICE FLOATING RATE FUND, INC.

T. ROWE PRICE GLOBAL ALLOCATION FUND, INC.

T. ROWE PRICE GLOBAL MULTI-SECTOR BOND FUND, INC.

T. ROWE PRICE GLOBAL REAL ESTATE FUND, INC.

T. ROWE PRICE GLOBAL TECHNOLOGY FUND, INC.

T. ROWE PRICE GNMA FUND

T. ROWE PRICE GROWTH & INCOME FUND, INC.

T. ROWE PRICE GROWTH STOCK FUND, INC.

T. ROWE PRICE HEALTH SCIENCES FUND, INC.

T. ROWE PRICE HIGH YIELD FUND, INC.

T. ROWE PRICE INDEX TRUST, INC.

T. ROWE PRICE INFLATION PROTECTED BOND FUND, INC.

T. ROWE PRICE INSTITUTIONAL EQUITY FUNDS, INC.

T. ROWE PRICE INSTITUTIONAL INCOME FUNDS, INC.

T. ROWE PRICE INSTITUTIONAL INTERNATIONAL FUNDS, INC.

T. ROWE PRICE INTERMEDIATE TAX-FREE HIGH YIELD FUND, INC.

T. ROWE PRICE INTERNATIONAL FUNDS, INC.

T. ROWE PRICE INTERNATIONAL INDEX FUND, INC.

T. ROWE PRICE INTERNATIONAL SERIES, INC.

T. ROWE PRICE LIMITED DURATION INFLATION FOCUSED BOND FUND, INC.

T. ROWE PRICE MEDIA & TELECOMMUNICATIONS FUND, INC.

T. ROWE PRICE MID-CAP GROWTH FUND, INC.

T. ROWE PRICE MID-CAP VALUE FUND, INC.

T. ROWE PRICE MULTI-SECTOR ACCOUNT PORTFOLIOS, INC.

T. ROWE PRICE NEW AMERICA GROWTH FUND
T. ROWE PRICE NEW ERA FUND, INC.

T. ROWE PRICE NEW HORIZONS FUND, INC.

T. ROWE PRICE NEW INCOME FUND, INC.

T. ROWE PRICE PERSONAL STRATEGY FUNDS, INC.

T. ROWE PRICE PRIME RESERVE FUND, INC.

T. ROWE PRICE QUANTITATIVE MANAGEMENT FUNDS, INC.

T. ROWE PRICE REAL ASSETS FUND, INC.

T. ROWE PRICE REAL ESTATE FUND, INC.

T. ROWE PRICE RESERVE INVESTMENT FUNDS, INC.

T. ROWE PRICE RETIREMENT FUNDS, INC.

T. ROWE PRICE SCIENCE & TECHNOLOGY FUND, INC.

T. ROWE PRICE SHORT-TERM BOND FUND, INC.

Page 6

T. ROWE PRICE SMALL-CAP STOCK FUND, INC.

T. ROWE PRICE SMALL-CAP VALUE FUND, INC.

T. ROWE PRICE SPECTRUM FUND, INC.

T. ROWE PRICE STATE TAX-FREE INCOME TRUST

T. ROWE PRICE SUMMIT FUNDS, INC.

T. ROWE PRICE SUMMIT MUNICIPAL FUNDS, INC.

T. ROWE PRICE TAX-EFFICIENT FUNDS, INC.

T. ROWE PRICE TAX-EXEMPT MONEY FUND, INC.

T. ROWE PRICE TAX-FREE HIGH YIELD FUND, INC.

T. ROWE PRICE TAX-FREE INCOME FUND, INC.

T. ROWE PRICE TAX-FREE SHORT-INTERMEDIATE FUND, INC.

T. ROWE PRICE U.S. BOND ENHANCED INDEX FUND, INC.

T. ROWE PRICE U.S. LARGE-CAP CORE FUND, INC.

T. ROWE PRICE U.S. TREASURY FUNDS, INC.

T. ROWE PRICE VALUE FUND, INC.

POWER OF ATTORNEY

RESOLVED, that the Corporation does hereby constitute and authorize Edward C. Bernard, Margery K. Neale, and David Oestreicher, and each of them individually, their true and lawful attorneys and agents to take any and all action and execute any and all instruments which said attorneys and agents may deem necessary or advisable to enable the Corporation/Trust to comply with the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, and any rules, regulations, orders or other requirements of the United States Securities and Exchange Commission thereunder, in connection with the registration under the Securities Act of 1933, as amended, of shares of the Corporation/Trust, to be offered by the Corporation/Trust, and the registration of the Corporation/Trust under the Investment Company Act of 1940, as amended, including specifically, but without limitation of the foregoing, power and authority to sign the name of the Corporation/Trust on its behalf, and to sign the names of each of such directors/trustees and officers on his behalf as such director/trustee or officer to any (i) Registration Statement on Form N-1A or N-14 of the Corporation/Trust filed with the Securities and Exchange Commission under the Securities Act of 1933, as amended; (ii) Registration Statement on Form N-1A or N-14 of the Corporation/Trust under the Investment Company Act of 1940, as amended; (iii) amendment or supplement (including, but not limited to, Post-Effective Amendments adding additional series or classes of the Corporation/Trust) to said Registration Statement; and (iv) instruments or documents filed or to be filed as a part of or in connection with such Registration Statement, including Articles Supplementary, Articles of Amendment, and other instruments with respect to the Articles of Incorporation or Master Trust Agreement of the Corporation/Trust.

IN WITNESS WHEREOF, the above named Corporations/Trusts have caused these presents to be signed and the same attested by its Secretary, each thereunto duly authorized by its Board of Directors/Trustees, and each of the undersigned has hereunto set his hand and seal as of the day set opposite his name.

Page 7

ALL CORPORATIONS/TRUSTS /s/Edward C. Bernard
Edward C. Bernard /s/Catherine D. Mathews	Chairman of the Board (Principal Executive Officer) Director/Trustee	April 21, 2016
Catherine D. Mathews /s/William R. Brody	Treasurer (Principal Financial Officer) Vice President	April 21, 2016
William R. Brody /s/Anthony W. Deering	Director/Trustee	April 21, 2016
Anthony W. Deering /s/Bruce W. Duncan	Director/Trustee	April 21, 2016
Bruce W. Duncan /s/Robert J. Gerrard, Jr.	Director/Trustee	April 21, 2016
Robert J. Gerrard, Jr. /s/Paul F. McBride	Director/Trustee	April 21, 2016
Paul F. McBride /s/Cecilia E. Rouse	Director/Trustee	April 21, 2016
Cecilia E. Rouse /s/John G. Schreiber	Director/Trustee	April 21, 2016
John G. Schreiber /s/Mark R. Tercek	Director/Trustee	April 21, 2016
Mark R. Tercek	Director/Trustee	April 21, 2016

(Signatures Continued)

Page 8

BRIAN C. ROGERS, Director/Trustee

T. ROWE PRICE BALANCED FUND, INC.

T. ROWE PRICE BLUE CHIP GROWTH FUND, INC.

T. ROWE PRICE CAPITAL APPRECIATION FUND

T. ROWE PRICE CAPITAL OPPORTUNITY FUND, INC.

T. ROWE PRICE DIVERSIFIED MID-CAP GROWTH FUND, INC.

T. ROWE PRICE DIVIDEND GROWTH FUND, INC.

T. ROWE PRICE EQUITY INCOME FUND

T. ROWE PRICE EQUITY SERIES, INC.

T. ROWE PRICE FINANCIAL SERVICES FUND, INC.

T. ROWE PRICE GLOBAL ALLOCATION FUND, INC.

T. ROWE PRICE GLOBAL REAL ESTATE FUND, INC.

T. ROWE PRICE GLOBAL TECHNOLOGY FUND, INC.

T. ROWE PRICE GROWTH & INCOME FUND, INC.

T. ROWE PRICE GROWTH STOCK FUND, INC.

T. ROWE PRICE HEALTH SCIENCES FUND, INC.

T. ROWE INDEX TRUST, INC.

T. ROWE PRICE INSTITUTIONAL EQUITY FUNDS, INC.

T. ROWE PRICE INSTITUTIONAL INTERNATIONAL FUNDS, INC.

T. ROWE PRICE INTERNATIONAL FUNDS, INC.

T. ROWE PRICE INTERNATIONAL INDEX FUND, INC.

T. ROWE PRICE INTERNATIONAL SERIES, INC.

T. ROWE PRICE MEDIA & TELECOMMUNICATIONS FUND, INC.

T. ROWE PRICE MID-CAP GROWTH FUND, INC.

T. ROWE PRICE MID-CAP VALUE FUND, INC.

T. ROWE PRICE NEW AMERICA GROWTH FUND

T. ROWE PRICE NEW ERA FUND, INC.

T. ROWE PRICE NEW HORIZONS FUND, INC.

T. ROWE PRICE PERSONAL STRATEGY FUNDS, INC.

T. ROWE PRICE QUANTITATIVE MANAGEMENT FUNDS, INC.

T. ROWE PRICE REAL ASSETS FUND, INC.

T. ROWE PRICE REAL ESTATE FUND, INC.

T. ROWE PRICE RETIREMENT FUNDS, INC.

T. ROWE PRICE SCIENCE & TECHNOLOGY FUND, INC.

T. ROWE PRICE SMALL-CAP STOCK FUND, INC.

T. ROWE PRICE SMALL-CAP VALUE FUND, INC.

T. ROWE PRICE SPECTRUM FUND, INC.

T. ROWE PRICE TAX-EFFICIENT FUNDS, INC.

T. ROWE PRICE U.S. LARGE-CAP CORE FUND, INC.

T. ROWE PRICE VALUE FUND, INC.

/s/Brian C. Rogers

Brian C. Rogers April 21, 2016

(Signatures Continued)

Page 9

EDWARD A. WIESE, Director/Trustee

T. ROWE PRICE CALIFORNIA TAX-FREE INCOME TRUST

T. ROWE PRICE CORPORATE INCOME FUND, INC.

T. ROWE PRICE CREDIT OPPORTUNITIES FUND, INC.

T. ROWE PRICE FIXED INCOME SERIES, INC.

T. ROWE PRICE FLOATING RATE FUND, INC.

T. ROWE PRICE GLOBAL MULTI-SECTOR BOND FUND, INC.

T. ROWE PRICE GNMA FUND

T. ROWE PRICE HIGH YIELD FUND, INC.

T. ROWE PRICE INSTITUTIONAL INCOME FUNDS, INC.

T. ROWE PRICE INFLATION PROTECTED BOND FUND, INC.

T. ROWE PRICE INTERMEDIATE TAX-FREE HIGH YIELD FUND, INC.

T. ROWE PRICE LIMITED DURATION INFLATION FOCUSED BOND FUND, INC.

T. ROWE PRICE MULTI-SECTOR ACCOUNT PORTFOLIOS, INC.

T. ROWE PRICE NEW INCOME FUND, INC.

T. ROWE PRICE PRIME RESERVE FUND, INC.

T. ROWE PRICE RESERVE INVESTMENT FUNDS, INC.

T. ROWE PRICE SHORT-TERM BOND FUND, INC.

T. ROWE PRICE STATE TAX-FREE INCOME TRUST

T. ROWE PRICE SUMMIT FUNDS, INC.

T. ROWE PRICE SUMMIT MUNICIPAL FUNDS, INC.

T. ROWE PRICE TAX-EXEMPT MONEY FUND, INC.

T. ROWE PRICE TAX-FREE HIGH YIELD FUND, INC.

T. ROWE PRICE TAX-FREE INCOME FUND, INC.

T. ROWE PRICE TAX-FREE SHORT-INTERMEDIATE FUND, INC.

T. ROWE PRICE U.S. BOND ENHANCED INDEX FUND, INC.

T. ROWE PRICE U.S. TREASURY FUNDS, INC.

/s/Edward A. Wiese

Edward A. Wiese April 21, 2016

(Signatures Continued)

Page 10

ATTEST:

/s/Darrell N. Braman

Darrell N. Braman, Secretary

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Dec. 31, 2016
Registrant Name	dei_EntityRegistrantName	T. Rowe Price Spectrum Fund, Inc.
Central Index Key	dei_EntityCentralIndexKey	0000808303
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Apr. 27, 2017
Document Effective Date	dei_DocumentEffectiveDate	May 01, 2017
Prospectus Date	rr_ProspectusDate	May 01, 2017

XML

Spectrum Growth Fund

T. Rowe Price

Spectrum Growth Fund

SUMMARY

Investment Objective

The fund seeks long-term capital appreciation

and growth of income with current income a secondary objective.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table.

Fees and Expenses of the Fund

Shareholder fees (fees paid directly from your investment)

Shareholder Fees	Spectrum Growth Fund Spectrum Growth Fund USD ($)
Maximum account fee	$ 20	[1],[2]

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

Annual Fund Operating Expenses	Spectrum Growth Fund Spectrum Growth Fund	[1]
Management fees	none
Distribution and service (12b-1) fees
Other expenses
Acquired fund fees and expenses	0.80%
Total annual fund operating expenses	0.80%

Example

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 year	3 years	5 years	10 years
Spectrum Growth Fund | Spectrum Growth Fund | USD ($)	82	255	444	990

Portfolio Turnover

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 10.5% of the average value of its portfolio.

Investments, Risks, and Performance

Principal Investment Strategies

The fund broadly diversifies its assets among a set of T. Rowe Price mutual funds representing specific market segments. The fund, which normally invests in a variety of domestic and international equity funds and, from time to time, a money market fund, seeks to maintain broad exposure to several markets in an attempt to reduce the impact of markets that are declining and to benefit from good performance in particular market segments over time.

The fund can invest in funds holding U.S. and international stocks; stocks of companies involved in activities related to commodities and other real assets; small-cap, mid-cap, and large-cap stocks; and growth and value stocks.

Within the ranges shown in the following table, the portfolio manager decides how much of the fund's assets to allocate to underlying fund investments based on the outlook for, and on the relative valuations of, the underlying funds and the various markets in which they invest.

Asset Allocation Ranges for Underlying Funds
Spectrum Growth Fund	Investment Range
Blue Chip Growth	5%-25	%
Emerging Markets Stock	0%-10	%
Equity Income	5%-25	%
Growth Stock	5%-25	%
International Discovery	0%-10	%
International Stock	0%-20	%
International Value Equity	0%-20	%
Mid-Cap Growth	0%-15	%
Mid-Cap Value	0%-15	%
New Horizons	0%-15	%
Real Assets	0%-10	%
Small-Cap Value	0%-15	%
U.S. Treasury Money	0%-25	%
Value	5%-25	%

The fund may sell shares of the underlying funds for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Principal Risks

As with any mutual fund, there is no guarantee that the fund will achieve its objective. The fund’s share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund are summarized as follows:

Asset allocation risks The fund’s risks will directly correspond to the risks of the underlying funds in which it invests. By investing in many underlying funds, the fund has partial exposure to the risks of many different areas of the market. However, the selection of the underlying funds and the allocation of the fund’s assets among the various asset classes and market sectors could cause the fund to underperform in comparison to other funds with a similar investment objective.

General equity risks Stocks generally fluctuate in value more than bonds and may decline significantly over short periods. As with any fund having equity exposure, the fund’s share price can fall because of overall weakness in the stock market. The value of a stock fund in which the fund invests may decline due to general market conditions or because of factors that affect a particular industry or market sector.

International investing risks Investing in funds that hold the securities of non-U.S. issuers involves special risks not typically associated with investing in funds that hold the securities of U.S. issuers. International securities tend to be more volatile and less liquid than investments in U.S. securities and may lose value because of adverse local, political, social, or economic developments overseas, or due to changes in the exchange rates between foreign currencies and the U.S. dollar. In addition, international investments are subject to settlement practices and regulatory and financial reporting standards that differ from those of the U.S. These risks are heightened for the fund’s investments in emerging markets, which are more susceptible to governmental interference, less efficient trading markings, and the imposition of local taxes and restrictions on gaining access to sales proceeds for foreign investors.

Investment style risks Because the fund invests in stock funds with both growth and value characteristics, its share price may be negatively affected if either investing approach falls out of favor. Growth stocks tend to be more volatile than the overall stock market and are more sensitive to changes in current or expected earnings. Value stocks carry the risk that investors will not recognize their intrinsic value for a long time or that they are actually appropriately priced at a low level.

Market capitalization risks Because the fund may invest in funds that hold companies of any size, its share price could be more volatile than a fund that has exposure to only large companies. Small and medium-sized companies often have less experienced management, narrower product lines, more limited financial resources, and less publicly available information than larger companies. Larger companies may not be able to attain the high growth rates of successful smaller companies, especially during strong economic periods, and they may be less capable of responding quickly to competitive challenges and industry changes.

Risks of money market investing The underlying money market fund may not be able to maintain a stable $1.00 share price at all times. If a money market fund fails to maintain a stable net asset value, or if there is a perceived threat that a money market fund is likely to fail to maintain a stable net asset value, the underlying fund could experience significant redemption activity. This could reduce the market prices of securities held by the underlying fund and make it more difficult for the fund to maintain a stable $1.00 share price.

Performance

The following performance information provides some indication of the risks of investing in the fund. The fund's performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund.

Spectrum Growth Fund
Calendar Year Returns

	Quarter Ended	Total Return		Quarter Ended	Total Return
Best Quarter	6/30/09	21.62%	Worst Quarter	12/31/08	-24.66

The following table shows the average annual total returns for the fund, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

In addition, the table shows hypothetical after-tax returns to demonstrate how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

Average Annual Total Returns

Periods ended
December 31, 2016

Average Annual Total Returns - Spectrum Growth Fund		1 Year	5 Years	10 Years	Inception date
Spectrum Growth Fund		7.84%	11.75%	5.81%	Jun. 29, 1990
Spectrum Growth Fund | Returns after taxes on distributions		6.06%	10.07%	4.68%	Jun. 29, 1990
Spectrum Growth Fund | Returns after taxes on distributions and sale of fund shares		5.95%	9.30%	4.56%	Jun. 29, 1990
Russell 3000 Index (reflects no deduction for fees, expenses, or taxes)		12.74%	14.67%	7.07%
Combined Index Portfolio (reflects no deduction for fees, expenses, or taxes)	[1]	10.41%	11.99%	5.36%
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)		11.96%	14.66%	6.95%
Lipper Multi-Cap Core Funds Index		12.27%	13.39%	6.32%

Updated performance information is available through troweprice.com.

[1] Subject to certain exceptions, accounts with a balance of less than $10,000 are charged an annual $20 fee.

[2] While the fund itself charges no management fee, it will indirectly bear its pro-rata share of the expenses of the underlying T. Rowe Price funds in which it invests (acquired funds). The acquired funds are expected to bear the operating expenses of the fund.

[1] While the fund itself charges no management fee, it will indirectly bear its pro-rata share of the expenses of the underlying T. Rowe Price funds in which it invests (acquired funds). The acquired funds are expected to bear the operating expenses of the fund.

[1] Combined Index Portfolio is an unmanaged blended benchmark that was composed of the S&P 500 Index (ranging from 80%-87.5%) and the MSCI EAFE Index (ranging from 12.5%-20%) through 8/31/08. From 9/1/08 through 4/30/11, the blended benchmark was composed of 80% the Russell 3000 Index and 20% the MSCI All Country World ex USA Index. From 5/1/11 through 7/31/12, the blended benchmark was composed of the Russell 3000 Index (ranging from 70%-80%) and the MSCI All Country World ex USA Index (ranging from 20%-30%). From 8/1/12 through 3/10/15, the blended benchmark was composed of 70% the Russell 3000 Index and 30% the MSCI All Country World ex USA Index. Since 3/11/15, the blended benchmark has been composed of 70% the Russell 3000 Index and 30% the MSCI All Country World ex USA Investable Market Index (IMI). The indices and percentages may vary over time.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

T. Rowe Price Spectrum Fund, Inc.

Prospectus Date

rr_ProspectusDate

May 01, 2017

Spectrum Growth Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

T. Rowe Price

Spectrum Growth Fund

SUMMARY

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks long-term capital appreciation

Objective, Secondary [Text Block]

rr_ObjectiveSecondaryTextBlock

and growth of income with current income a secondary objective.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Fees and Expenses of the Fund

Shareholder fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 10.5% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

10.50%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Investments, Risks, and Performance

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The fund broadly diversifies its assets among a set of T. Rowe Price mutual funds representing specific market segments. The fund, which normally invests in a variety of domestic and international equity funds and, from time to time, a money market fund, seeks to maintain broad exposure to several markets in an attempt to reduce the impact of markets that are declining and to benefit from good performance in particular market segments over time.

The fund can invest in funds holding U.S. and international stocks; stocks of companies involved in activities related to commodities and other real assets; small-cap, mid-cap, and large-cap stocks; and growth and value stocks.

Within the ranges shown in the following table, the portfolio manager decides how much of the fund's assets to allocate to underlying fund investments based on the outlook for, and on the relative valuations of, the underlying funds and the various markets in which they invest.

Asset Allocation Ranges for Underlying Funds
Spectrum Growth Fund	Investment Range
Blue Chip Growth	5%-25	%
Emerging Markets Stock	0%-10	%
Equity Income	5%-25	%
Growth Stock	5%-25	%
International Discovery	0%-10	%
International Stock	0%-20	%
International Value Equity	0%-20	%
Mid-Cap Growth	0%-15	%
Mid-Cap Value	0%-15	%
New Horizons	0%-15	%
Real Assets	0%-10	%
Small-Cap Value	0%-15	%
U.S. Treasury Money	0%-25	%
Value	5%-25	%

The fund may sell shares of the underlying funds for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with any mutual fund, there is no guarantee that the fund will achieve its objective. The fund’s share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund are summarized as follows:

Asset allocation risks The fund’s risks will directly correspond to the risks of the underlying funds in which it invests. By investing in many underlying funds, the fund has partial exposure to the risks of many different areas of the market. However, the selection of the underlying funds and the allocation of the fund’s assets among the various asset classes and market sectors could cause the fund to underperform in comparison to other funds with a similar investment objective.

General equity risks Stocks generally fluctuate in value more than bonds and may decline significantly over short periods. As with any fund having equity exposure, the fund’s share price can fall because of overall weakness in the stock market. The value of a stock fund in which the fund invests may decline due to general market conditions or because of factors that affect a particular industry or market sector.

International investing risks Investing in funds that hold the securities of non-U.S. issuers involves special risks not typically associated with investing in funds that hold the securities of U.S. issuers. International securities tend to be more volatile and less liquid than investments in U.S. securities and may lose value because of adverse local, political, social, or economic developments overseas, or due to changes in the exchange rates between foreign currencies and the U.S. dollar. In addition, international investments are subject to settlement practices and regulatory and financial reporting standards that differ from those of the U.S. These risks are heightened for the fund’s investments in emerging markets, which are more susceptible to governmental interference, less efficient trading markings, and the imposition of local taxes and restrictions on gaining access to sales proceeds for foreign investors.

Investment style risks Because the fund invests in stock funds with both growth and value characteristics, its share price may be negatively affected if either investing approach falls out of favor. Growth stocks tend to be more volatile than the overall stock market and are more sensitive to changes in current or expected earnings. Value stocks carry the risk that investors will not recognize their intrinsic value for a long time or that they are actually appropriately priced at a low level.

Market capitalization risks Because the fund may invest in funds that hold companies of any size, its share price could be more volatile than a fund that has exposure to only large companies. Small and medium-sized companies often have less experienced management, narrower product lines, more limited financial resources, and less publicly available information than larger companies. Larger companies may not be able to attain the high growth rates of successful smaller companies, especially during strong economic periods, and they may be less capable of responding quickly to competitive challenges and industry changes.

Risks of money market investing The underlying money market fund may not be able to maintain a stable $1.00 share price at all times. If a money market fund fails to maintain a stable net asset value, or if there is a perceived threat that a money market fund is likely to fail to maintain a stable net asset value, the underlying fund could experience significant redemption activity. This could reduce the market prices of securities held by the underlying fund and make it more difficult for the fund to maintain a stable $1.00 share price.

Risk Lose Money [Text]

rr_RiskLoseMoney

The fund’s share price fluctuates, which means you could lose money by investing in the fund.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the fund. The fund's performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the fund.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund.

The following table shows the average annual total returns for the fund, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

troweprice.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The fund's performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

Bar Chart [Heading]

rr_BarChartHeading

Spectrum Growth Fund
Calendar Year Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

	Quarter Ended	Total Return		Quarter Ended	Total Return
Best Quarter	6/30/09	21.62%	Worst Quarter	12/31/08	-24.66

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns

Periods ended
December 31, 2016

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The following table shows the average annual total returns for the fund, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

In addition, the table shows hypothetical after-tax returns to demonstrate how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Updated performance information is available through troweprice.com.

Spectrum Growth Fund | Spectrum Growth Fund

Risk/Return:

rr_RiskReturnAbstract

Maximum account fee

rr_MaximumAccountFee

$ 20

^[1],[2]

Management fees

rr_ManagementFeesOverAssets

none

^[2]

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

^[2]

Other expenses

rr_OtherExpensesOverAssets

^[2]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.80%

^[2]

Total annual fund operating expenses

rr_ExpensesOverAssets

0.80%

^[2]

1 year

rr_ExpenseExampleYear01

$ 82

3 years

rr_ExpenseExampleYear03

255

5 years

rr_ExpenseExampleYear05

444

10 years

rr_ExpenseExampleYear10

$ 990

2007

rr_AnnualReturn2007

8.65%

2008

rr_AnnualReturn2008

(41.52%)

2009

rr_AnnualReturn2009

40.94%

2010

rr_AnnualReturn2010

16.88%

2011

rr_AnnualReturn2011

(3.60%)

2012

rr_AnnualReturn2012

18.13%

2013

rr_AnnualReturn2013

28.59%

2014

rr_AnnualReturn2014

5.60%

2015

rr_AnnualReturn2015

0.75%

2016

rr_AnnualReturn2016

7.84%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

21.62%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(24.66%)

1 Year

rr_AverageAnnualReturnYear01

7.84%

5 Years

rr_AverageAnnualReturnYear05

11.75%

10 Years

rr_AverageAnnualReturnYear10

5.81%

Inception date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 1990

Spectrum Growth Fund | Returns after taxes on distributions | Spectrum Growth Fund

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

6.06%

5 Years

rr_AverageAnnualReturnYear05

10.07%

10 Years

rr_AverageAnnualReturnYear10

4.68%

Inception date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 1990

Spectrum Growth Fund | Returns after taxes on distributions and sale of fund shares | Spectrum Growth Fund

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

5.95%

5 Years

rr_AverageAnnualReturnYear05

9.30%

10 Years

rr_AverageAnnualReturnYear10

4.56%

Inception date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 1990

Spectrum Growth Fund | Russell 3000 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

12.74%

5 Years

rr_AverageAnnualReturnYear05

14.67%

10 Years

rr_AverageAnnualReturnYear10

7.07%

Spectrum Growth Fund | Combined Index Portfolio (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

10.41%

^[3]

5 Years

rr_AverageAnnualReturnYear05

11.99%

^[3]

10 Years

rr_AverageAnnualReturnYear10

5.36%

^[3]

Spectrum Growth Fund | S&P 500 Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

11.96%

5 Years

rr_AverageAnnualReturnYear05

14.66%

10 Years

rr_AverageAnnualReturnYear10

6.95%

Spectrum Growth Fund | Lipper Multi-Cap Core Funds Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

12.27%

5 Years

rr_AverageAnnualReturnYear05

13.39%

10 Years

rr_AverageAnnualReturnYear10

6.32%

[1] Subject to certain exceptions, accounts with a balance of less than $10,000 are charged an annual $20 fee.

[2] While the fund itself charges no management fee, it will indirectly bear its pro-rata share of the expenses of the underlying T. Rowe Price funds in which it invests (acquired funds). The acquired funds are expected to bear the operating expenses of the fund.

[3] Combined Index Portfolio is an unmanaged blended benchmark that was composed of the S&P 500 Index (ranging from 80%-87.5%) and the MSCI EAFE Index (ranging from 12.5%-20%) through 8/31/08. From 9/1/08 through 4/30/11, the blended benchmark was composed of 80% the Russell 3000 Index and 20% the MSCI All Country World ex USA Index. From 5/1/11 through 7/31/12, the blended benchmark was composed of the Russell 3000 Index (ranging from 70%-80%) and the MSCI All Country World ex USA Index (ranging from 20%-30%). From 8/1/12 through 3/10/15, the blended benchmark was composed of 70% the Russell 3000 Index and 30% the MSCI All Country World ex USA Index. Since 3/11/15, the blended benchmark has been composed of 70% the Russell 3000 Index and 30% the MSCI All Country World ex USA Investable Market Index (IMI). The indices and percentages may vary over time.

XML

Spectrum Income Fund

T. Rowe Price

Spectrum Income Fund

SUMMARY

Investment Objective

The fund seeks a high level of current income with moderate share price fluctuation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table.

Fees and Expenses of the Fund

Shareholder fees (fees paid directly from your investment)

Shareholder Fees	Spectrum Income Fund Spectrum Income Fund USD ($)
Maximum account fee	$ 20	[1],[2]

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

Annual Fund Operating Expenses	Spectrum Income Fund Spectrum Income Fund	[1]
Management fees	none
Distribution and service (12b-1) fees
Other expenses
Acquired fund fees and expenses	0.69%
Total annual fund operating expenses	0.69%

Example

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 year	3 years	5 years	10 years
Spectrum Income Fund | Spectrum Income Fund | USD ($)	70	221	384	859

Portfolio Turnover

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 17.7% of the average value of its portfolio.

Investments, Risks, and Performance

Principal Investment Strategies

The fund broadly diversifies its assets among a set of T. Rowe Price mutual funds representing specific market segments. The fund, which normally invests in a variety of domestic and international bond funds, a money market fund, and an income-oriented stock fund, seeks to maintain broad exposure to several markets in an attempt to reduce the impact of markets that are declining and to benefit from good performance in particular market segments over time.

The fund can invest in funds holding high-quality domestic and foreign bonds, high-yield bonds (“junk” bonds), short- and long-term securities, and dividend-paying stocks.

Within the ranges shown in the following table, the portfolio manager decides how much of the fund’s assets to allocate to underlying fund investments based on the outlook for, and on the relative valuations of, the underlying funds and the various markets in which they invest.

Asset Allocation Ranges for Underlying Funds
Spectrum Income Fund	Investment Range
Corporate Income	0%-10	%
Emerging Markets Bond	0%-20	%
Emerging Markets Local Currency Bond	0%-10	%
Equity Income	5%-25	%
Floating Rate	0%-10	%
GNMA	5%-20	%
High Yield	5%-25	%
Inflation Protected Bond	0%-10	%
International Bond	0%-20	%
Limited Duration Inflation Focused Bond	0%-10	%
New Income	10%-30	%
Short-Term Bond	0%-15	%
U.S. Treasury Intermediate	0%-10	%
U.S. Treasury Long-Term	0%-15	%
U.S. Treasury Money	0%-25	%
Ultra Short-Term Bond	0%-10	%

The fund may sell shares of the underlying funds for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Principal Risks

As with any mutual fund, there is no guarantee that the fund will achieve its objective. The fund’s share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund are summarized as follows:

Asset allocation risks The fund’s risks will directly correspond to the risks of the underlying funds in which it invests. By investing in many underlying funds, the fund has partial exposure to the risks of many different areas of the market. However, the selection of the underlying funds and the allocation of the fund’s assets among the various asset classes and market sectors could cause the fund to underperform in comparison to other funds with a similar investment objective.

Interest rate risks A rise in interest rates could cause the price of a bond fund in which the fund invests to fall. Generally, securities with longer maturities or durations, and funds with longer weighted average maturities or durations, carry greater interest rate risk.

Credit risks An issuer of a debt security held by an underlying bond fund could be downgraded or default, thereby negatively affecting the fund’s price or yield. The fund is exposed to greater credit risk to the extent it invests in underlying funds that hold high yield bonds. Issuers of high yield bonds are usually not as strong financially and the securities they issue carry a higher risk of default and should be considered speculative.

Liquidity risks The underlying fund may not be able to sell a holding in a timely manner at a desired price. Reduced liquidity in the bond markets can result from a number of events, such as limited trading activity, reductions in bond inventory, and rapid or unexpected changes in interest rates. Less liquid markets could lead to greater price volatility and limit the fund’s ability to sell a holding at a suitable price. Floating rate loans may not have an active trading market and often have contractual restrictions on resale, which can delay the sale and adversely impact the sale price.

International investing risks Investing in funds that hold the securities of non-U.S. issuers involves special risks not typically associated with investing in funds that hold the securities of U.S. issuers. International securities tend to be more volatile and less liquid than investments in U.S. securities and may lose value because of adverse local, political, social, or economic developments overseas, or due to changes in the exchange rates between foreign currencies and the U.S. dollar. In addition, international investments are subject to settlement practices and regulatory and financial reporting standards that differ from those of the U.S.

Emerging markets risks The risks of international investing are heightened for securities of issuers in emerging market countries. Emerging market countries tend to have economic structures that are less diverse and mature, and political systems that are less stable, than those of developed countries. In addition to all of the risks of investing in international developed markets, emerging markets are more susceptible to governmental interference, local taxes being imposed on international investments, restrictions on gaining access to sales proceeds, and less liquid and less efficient trading markets.

Dividend-paying stock risks To the extent the fund invests in an underlying fund that focuses on stocks, it is exposed to greater volatility and the risk of stock market declines that could cause the fund to underperform bond funds with similar objectives. Stocks of established companies paying high dividends may not participate in a broad market advance to the same degree as most other stocks, and a sharp rise in interest rates could cause a company to reduce or eliminate its dividend.

Risks of money market investing The underlying money market fund may not be able to maintain a stable $1.00 share price at all times. If a money market fund fails to maintain a stable net asset value, or if there is a perceived threat that a money market fund is likely to fail to maintain a stable net asset value, the underlying fund could experience significant redemption activity. This could reduce the market prices of securities held by the underlying fund and make it more difficult for the fund to maintain a stable $1.00 share price.

Performance

The following performance information provides some indication of the risks of investing in the fund. The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund.

Spectrum Income Fund
Calendar Year Returns

	Quarter Ended	Total Return		Quarter Ended	Total Return
Best Quarter	6/30/09	9.91%	Worst Quarter	12/31/08	-5.40

The following table shows the average annual total returns for the fund, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

In addition, the table shows hypothetical after-tax returns to demonstrate how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

Average Annual Total Returns

Periods ended
December 31, 2016

Average Annual Total Returns - Spectrum Income Fund	1 Year	5 Years	10 Years	Inception date
Spectrum Income Fund	8.18%	4.56%	5.14%	Jun. 29, 1990
Spectrum Income Fund | Returns after taxes on distributions	6.63%	2.94%	3.44%	Jun. 29, 1990
Spectrum Income Fund | Returns after taxes on distributions and sale of fund shares	4.80%	2.93%	3.39%	Jun. 29, 1990
Bloomberg Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	2.65%	2.23%	4.34%
Lipper Multi-Sector Income Funds Average	7.26%	4.33%	4.72%

Updated performance information is available through troweprice.com.

[1] Subject to certain exceptions, accounts with a balance of less than $10,000 are charged an annual $20 fee.

[2] While the fund itself charges no management fee, it will indirectly bear its pro-rata share of the expenses of the underlying T. Rowe Price funds in which it invests (acquired funds). The acquired funds are expected to bear the operating expenses of the fund.

[1] While the fund itself charges no management fee, it will indirectly bear its pro-rata share of the expenses of the underlying T. Rowe Price funds in which it invests (acquired funds). The acquired funds are expected to bear the operating expenses of the fund.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

T. Rowe Price Spectrum Fund, Inc.

Prospectus Date

rr_ProspectusDate

May 01, 2017

Spectrum Income Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

T. Rowe Price

Spectrum Income Fund

SUMMARY

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks a high level of current income with moderate share price fluctuation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Fees and Expenses of the Fund

Shareholder fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 17.7% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

17.70%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Investments, Risks, and Performance

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The fund broadly diversifies its assets among a set of T. Rowe Price mutual funds representing specific market segments. The fund, which normally invests in a variety of domestic and international bond funds, a money market fund, and an income-oriented stock fund, seeks to maintain broad exposure to several markets in an attempt to reduce the impact of markets that are declining and to benefit from good performance in particular market segments over time.

The fund can invest in funds holding high-quality domestic and foreign bonds, high-yield bonds (“junk” bonds), short- and long-term securities, and dividend-paying stocks.

Within the ranges shown in the following table, the portfolio manager decides how much of the fund’s assets to allocate to underlying fund investments based on the outlook for, and on the relative valuations of, the underlying funds and the various markets in which they invest.

Asset Allocation Ranges for Underlying Funds
Spectrum Income Fund	Investment Range
Corporate Income	0%-10	%
Emerging Markets Bond	0%-20	%
Emerging Markets Local Currency Bond	0%-10	%
Equity Income	5%-25	%
Floating Rate	0%-10	%
GNMA	5%-20	%
High Yield	5%-25	%
Inflation Protected Bond	0%-10	%
International Bond	0%-20	%
Limited Duration Inflation Focused Bond	0%-10	%
New Income	10%-30	%
Short-Term Bond	0%-15	%
U.S. Treasury Intermediate	0%-10	%
U.S. Treasury Long-Term	0%-15	%
U.S. Treasury Money	0%-25	%
Ultra Short-Term Bond	0%-10	%

The fund may sell shares of the underlying funds for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with any mutual fund, there is no guarantee that the fund will achieve its objective. The fund’s share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund are summarized as follows:

Asset allocation risks The fund’s risks will directly correspond to the risks of the underlying funds in which it invests. By investing in many underlying funds, the fund has partial exposure to the risks of many different areas of the market. However, the selection of the underlying funds and the allocation of the fund’s assets among the various asset classes and market sectors could cause the fund to underperform in comparison to other funds with a similar investment objective.

Interest rate risks A rise in interest rates could cause the price of a bond fund in which the fund invests to fall. Generally, securities with longer maturities or durations, and funds with longer weighted average maturities or durations, carry greater interest rate risk.

Credit risks An issuer of a debt security held by an underlying bond fund could be downgraded or default, thereby negatively affecting the fund’s price or yield. The fund is exposed to greater credit risk to the extent it invests in underlying funds that hold high yield bonds. Issuers of high yield bonds are usually not as strong financially and the securities they issue carry a higher risk of default and should be considered speculative.

Liquidity risks The underlying fund may not be able to sell a holding in a timely manner at a desired price. Reduced liquidity in the bond markets can result from a number of events, such as limited trading activity, reductions in bond inventory, and rapid or unexpected changes in interest rates. Less liquid markets could lead to greater price volatility and limit the fund’s ability to sell a holding at a suitable price. Floating rate loans may not have an active trading market and often have contractual restrictions on resale, which can delay the sale and adversely impact the sale price.

International investing risks Investing in funds that hold the securities of non-U.S. issuers involves special risks not typically associated with investing in funds that hold the securities of U.S. issuers. International securities tend to be more volatile and less liquid than investments in U.S. securities and may lose value because of adverse local, political, social, or economic developments overseas, or due to changes in the exchange rates between foreign currencies and the U.S. dollar. In addition, international investments are subject to settlement practices and regulatory and financial reporting standards that differ from those of the U.S.

Emerging markets risks The risks of international investing are heightened for securities of issuers in emerging market countries. Emerging market countries tend to have economic structures that are less diverse and mature, and political systems that are less stable, than those of developed countries. In addition to all of the risks of investing in international developed markets, emerging markets are more susceptible to governmental interference, local taxes being imposed on international investments, restrictions on gaining access to sales proceeds, and less liquid and less efficient trading markets.

Dividend-paying stock risks To the extent the fund invests in an underlying fund that focuses on stocks, it is exposed to greater volatility and the risk of stock market declines that could cause the fund to underperform bond funds with similar objectives. Stocks of established companies paying high dividends may not participate in a broad market advance to the same degree as most other stocks, and a sharp rise in interest rates could cause a company to reduce or eliminate its dividend.

Risks of money market investing The underlying money market fund may not be able to maintain a stable $1.00 share price at all times. If a money market fund fails to maintain a stable net asset value, or if there is a perceived threat that a money market fund is likely to fail to maintain a stable net asset value, the underlying fund could experience significant redemption activity. This could reduce the market prices of securities held by the underlying fund and make it more difficult for the fund to maintain a stable $1.00 share price.

Risk Lose Money [Text]

rr_RiskLoseMoney

The fund’s share price fluctuates, which means you could lose money by investing in the fund.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the fund. The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the fund.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund.

The following table shows the average annual total returns for the fund, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

troweprice.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

Bar Chart [Heading]

rr_BarChartHeading

Spectrum Income Fund
Calendar Year Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

	Quarter Ended	Total Return		Quarter Ended	Total Return
Best Quarter	6/30/09	9.91%	Worst Quarter	12/31/08	-5.40

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns

Periods ended
December 31, 2016

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The following table shows the average annual total returns for the fund, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

In addition, the table shows hypothetical after-tax returns to demonstrate how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Updated performance information is available through troweprice.com.

Spectrum Income Fund | Spectrum Income Fund

Risk/Return:

rr_RiskReturnAbstract

Maximum account fee

rr_MaximumAccountFee

$ 20

^[1],[2]

Management fees

rr_ManagementFeesOverAssets

none

^[2]

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

^[2]

Other expenses

rr_OtherExpensesOverAssets

^[2]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.69%

^[2]

Total annual fund operating expenses

rr_ExpensesOverAssets

0.69%

^[2]

1 year

rr_ExpenseExampleYear01

$ 70

3 years

rr_ExpenseExampleYear03

221

5 years

rr_ExpenseExampleYear05

384

10 years

rr_ExpenseExampleYear10

$ 859

2007

rr_AnnualReturn2007

6.19%

2008

rr_AnnualReturn2008

(9.43%)

2009

rr_AnnualReturn2009

20.29%

2010

rr_AnnualReturn2010

9.68%

2011

rr_AnnualReturn2011

4.16%

2012

rr_AnnualReturn2012

10.16%

2013

rr_AnnualReturn2013

3.02%

2014

rr_AnnualReturn2014

3.88%

2015

rr_AnnualReturn2015

(2.02%)

2016

rr_AnnualReturn2016

8.18%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

9.91%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(5.40%)

1 Year

rr_AverageAnnualReturnYear01

8.18%

5 Years

rr_AverageAnnualReturnYear05

4.56%

10 Years

rr_AverageAnnualReturnYear10

5.14%

Inception date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 1990

Spectrum Income Fund | Returns after taxes on distributions | Spectrum Income Fund

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

6.63%

5 Years

rr_AverageAnnualReturnYear05

2.94%

10 Years

rr_AverageAnnualReturnYear10

3.44%

Inception date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 1990

Spectrum Income Fund | Returns after taxes on distributions and sale of fund shares | Spectrum Income Fund

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

4.80%

5 Years

rr_AverageAnnualReturnYear05

2.93%

10 Years

rr_AverageAnnualReturnYear10

3.39%

Inception date

rr_AverageAnnualReturnInceptionDate

Jun. 29, 1990

Spectrum Income Fund | Bloomberg Barclays U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

2.65%

5 Years

rr_AverageAnnualReturnYear05

2.23%

10 Years

rr_AverageAnnualReturnYear10

4.34%

Spectrum Income Fund | Lipper Multi-Sector Income Funds Average

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.26%

5 Years

rr_AverageAnnualReturnYear05

4.33%

10 Years

rr_AverageAnnualReturnYear10

4.72%

[1] Subject to certain exceptions, accounts with a balance of less than $10,000 are charged an annual $20 fee.

[2] While the fund itself charges no management fee, it will indirectly bear its pro-rata share of the expenses of the underlying T. Rowe Price funds in which it invests (acquired funds). The acquired funds are expected to bear the operating expenses of the fund.

XML

Spectrum International Fund

T. Rowe Price

Spectrum International Fund

SUMMARY

Investment Objective

The fund seeks long-term capital appreciation.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table.

Fees and Expenses of the Fund

Shareholder fees (fees paid directly from your investment)

Shareholder Fees	Spectrum International Fund Spectrum International Fund USD ($)	[1]
Redemption fee (as a percentage of amount redeemed on shares held for 90 days or less)	2.00%
Maximum account fee	$ 20	[2]

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

Annual Fund Operating Expenses	Spectrum International Fund Spectrum International Fund	[1]
Management fees	none
Distribution and service (12b-1) fees
Other expenses
Acquired fund fees and expenses	0.94%
Total annual fund operating expenses	0.94%

Example

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 year	3 years	5 years	10 years
Spectrum International Fund | Spectrum International Fund | USD ($)	96	300	520	1,155

Portfolio Turnover

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 10.8% of the average value of its portfolio.

Investments, Risks, and Performance

Principal Investment Strategies

The fund broadly diversifies its assets among a set of T. Rowe Price mutual funds representing specific market segments. The fund, which normally invests in a variety of developed and emerging market equity funds, and, from time to time, a money market fund, seeks to maintain broad exposure to several markets in an attempt to reduce the impact of markets that are declining and to benefit from good performance in particular market segments over time.

The fund can invest in stock funds that have holdings in many different foreign countries, developed as well as emerging markets, and in both large and small companies.

Within the ranges shown in the following table, the portfolio manager decides how much of the fund’s assets to allocate to underlying fund investments based on the outlook for, and on the relative valuations of, the underlying funds and the various markets in which they invest.

Asset Allocation Ranges for Underlying Funds
Spectrum International Fund	Investment Range
Africa & Middle East	0%-15	%
Emerging Europe	0%-15	%
Emerging Markets Stock	0%-20	%
European Stock	0%-30	%
International Discovery	0%-20	%
International Stock	0%-55	%
International Value Equity	0%-35	%
Japan	0%-30	%
Latin America	0%-15	%
New Asia	0%-20	%
Overseas Stock	0%-35	%
U.S. Treasury Money	0%-25	%

The fund may sell shares of the underlying funds for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Principal Risks

As with any mutual fund, there is no guarantee that the fund will achieve its objective. The fund’s share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund are summarized as follows:

Asset allocation risks The fund’s risks will directly correspond to the risks of the underlying funds in which it invests. By investing in many underlying funds, the fund has partial exposure to the risks of many different areas of the market. However, the selection of the underlying funds and the allocation of the fund’s assets among the various asset classes and market sectors could cause the fund to underperform in comparison to other funds with a similar investment objective.

General equity risks Stocks generally fluctuate in value more than bonds and may decline significantly over short periods. As with any fund having equity exposure, the fund’s share price can fall because of overall weakness in the stock market. The value of a stock fund in which the fund invests may decline due to general market conditions or because of factors that affect a particular industry or market sector.

Market capitalization risks Because the fund may invest in funds that hold companies of any size, its share price could be more volatile than a fund that has exposure to only large companies. Small and medium-sized companies often have less experienced management, narrower product lines, more limited financial resources, and less publicly available information than larger companies. Larger companies may not be able to attain the high growth rates of successful smaller companies, especially during strong economic periods, and they may be less capable of responding quickly to competitive challenges and industry changes.

International investing risks Investing in funds that hold the securities of non-U.S. issuers involves special risks not typically associated with investing in funds that hold the securities of U.S. issuers. International securities tend to be more volatile and less liquid than investments in U.S. securities and may lose value because of adverse local, political, social, or economic developments overseas, or due to changes in the exchange rates between foreign currencies and the U.S. dollar. In addition, international investments are subject to settlement practices and regulatory and financial reporting standards that differ from those of the U.S.

Emerging markets risks The risks of international investing are heightened for securities of issuers in emerging market countries. Emerging market countries tend to have economic structures that are less diverse and mature, and political systems that are less stable, than those of developed countries. In addition to all of the risks of investing in international developed markets, emerging markets are more susceptible to governmental interference, local taxes being imposed on international investments, restrictions on gaining access to sales proceeds, and less liquid and less efficient trading markets.

Risks of money market investing The underlying money market fund may not be able to maintain a stable $1.00 share price at all times. If a money market fund fails to maintain a stable net asset value, or if there is a perceived threat that a money market fund is likely to fail to maintain a stable net asset value, the underlying fund could experience significant redemption activity. This could reduce the market prices of securities held by the underlying fund and make it more difficult for the fund to maintain a stable $1.00 share price.

Performance

The following performance information provides some indication of the risks of investing in the fund. The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund.

Spectrum International Fund
Calendar Year Returns

	Quarter Ended	Total Return		Quarter Ended	Total Return
Best Quarter	6/30/09	31.13%	Worst Quarter	12/31/08	-22.45

The following table shows the average annual total returns for the fund, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

In addition, the table shows hypothetical after-tax returns to demonstrate how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

Average Annual Total Returns

Periods ended
December 31, 2016

Average Annual Total Returns - Spectrum International Fund		1 Year	5 Years	10 Years	Inception date
Spectrum International Fund		0.39%	6.23%	2.02%	Dec. 31, 1996
Spectrum International Fund | Returns after taxes on distributions		0.04%	5.92%	1.41%	Dec. 31, 1996
Spectrum International Fund | Returns after taxes on distributions and sale of fund shares		0.70%	4.99%	1.60%	Dec. 31, 1996
MSCI All Country World Index ex USA (reflects no deduction for fees, expenses, or taxes)		5.01%	5.48%	1.42%
Combined Index Portfolio (reflects no deduction for fees, expenses, or taxes)	[1]	5.01%	5.48%	1.99%
Lipper International Multi-Cap Growth Funds Average		(1.23%)	5.88%	0.80%

Updated performance information is available through troweprice.com.

[1] While the fund itself charges no management fee, it will indirectly bear its pro-rata share of the expenses of the underlying T. Rowe Price funds in which it invests (acquired funds). The acquired funds are expected to bear the operating expenses of the fund.

[2] Subject to certain exceptions, accounts with a balance of less than $10,000 are charged an annual $20 fee.

[1] While the fund itself charges no management fee, it will indirectly bear its pro-rata share of the expenses of the underlying T. Rowe Price funds in which it invests (acquired funds). The acquired funds are expected to bear the operating expenses of the fund.

[1] Combined Index Portfolio performance benchmark reflects the performance of the 90% MSCI EAFE Index/10% J.P. Morgan Non-U.S. Dollar Government Bond Index to 2/28/09 and the MSCI All Country World Index ex USA from 3/1/09 forward.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

T. Rowe Price Spectrum Fund, Inc.

Prospectus Date

rr_ProspectusDate

May 01, 2017

Spectrum International Fund

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

T. Rowe Price

Spectrum International Fund

SUMMARY

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The fund seeks long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the fund. You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Fees and Expenses of the Fund

Shareholder fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

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

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund’s shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 10.8% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

10.80%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Investments, Risks, and Performance

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The fund broadly diversifies its assets among a set of T. Rowe Price mutual funds representing specific market segments. The fund, which normally invests in a variety of developed and emerging market equity funds, and, from time to time, a money market fund, seeks to maintain broad exposure to several markets in an attempt to reduce the impact of markets that are declining and to benefit from good performance in particular market segments over time.

The fund can invest in stock funds that have holdings in many different foreign countries, developed as well as emerging markets, and in both large and small companies.

Within the ranges shown in the following table, the portfolio manager decides how much of the fund’s assets to allocate to underlying fund investments based on the outlook for, and on the relative valuations of, the underlying funds and the various markets in which they invest.

Asset Allocation Ranges for Underlying Funds
Spectrum International Fund	Investment Range
Africa & Middle East	0%-15	%
Emerging Europe	0%-15	%
Emerging Markets Stock	0%-20	%
European Stock	0%-30	%
International Discovery	0%-20	%
International Stock	0%-55	%
International Value Equity	0%-35	%
Japan	0%-30	%
Latin America	0%-15	%
New Asia	0%-20	%
Overseas Stock	0%-35	%
U.S. Treasury Money	0%-25	%

The fund may sell shares of the underlying funds for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

As with any mutual fund, there is no guarantee that the fund will achieve its objective. The fund’s share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund are summarized as follows:

Asset allocation risks The fund’s risks will directly correspond to the risks of the underlying funds in which it invests. By investing in many underlying funds, the fund has partial exposure to the risks of many different areas of the market. However, the selection of the underlying funds and the allocation of the fund’s assets among the various asset classes and market sectors could cause the fund to underperform in comparison to other funds with a similar investment objective.

General equity risks Stocks generally fluctuate in value more than bonds and may decline significantly over short periods. As with any fund having equity exposure, the fund’s share price can fall because of overall weakness in the stock market. The value of a stock fund in which the fund invests may decline due to general market conditions or because of factors that affect a particular industry or market sector.

Market capitalization risks Because the fund may invest in funds that hold companies of any size, its share price could be more volatile than a fund that has exposure to only large companies. Small and medium-sized companies often have less experienced management, narrower product lines, more limited financial resources, and less publicly available information than larger companies. Larger companies may not be able to attain the high growth rates of successful smaller companies, especially during strong economic periods, and they may be less capable of responding quickly to competitive challenges and industry changes.

International investing risks Investing in funds that hold the securities of non-U.S. issuers involves special risks not typically associated with investing in funds that hold the securities of U.S. issuers. International securities tend to be more volatile and less liquid than investments in U.S. securities and may lose value because of adverse local, political, social, or economic developments overseas, or due to changes in the exchange rates between foreign currencies and the U.S. dollar. In addition, international investments are subject to settlement practices and regulatory and financial reporting standards that differ from those of the U.S.

Emerging markets risks The risks of international investing are heightened for securities of issuers in emerging market countries. Emerging market countries tend to have economic structures that are less diverse and mature, and political systems that are less stable, than those of developed countries. In addition to all of the risks of investing in international developed markets, emerging markets are more susceptible to governmental interference, local taxes being imposed on international investments, restrictions on gaining access to sales proceeds, and less liquid and less efficient trading markets.

Risks of money market investing The underlying money market fund may not be able to maintain a stable $1.00 share price at all times. If a money market fund fails to maintain a stable net asset value, or if there is a perceived threat that a money market fund is likely to fail to maintain a stable net asset value, the underlying fund could experience significant redemption activity. This could reduce the market prices of securities held by the underlying fund and make it more difficult for the fund to maintain a stable $1.00 share price.

Risk Lose Money [Text]

rr_RiskLoseMoney

The fund’s share price fluctuates, which means you could lose money by investing in the fund.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the fund. The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the fund.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund.

The following table shows the average annual total returns for the fund, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

troweprice.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The fund’s performance information represents only past performance (before and after taxes) and is not necessarily an indication of future results.

Bar Chart [Heading]

rr_BarChartHeading

Spectrum International Fund
Calendar Year Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

	Quarter Ended	Total Return		Quarter Ended	Total Return
Best Quarter	6/30/09	31.13%	Worst Quarter	12/31/08	-22.45

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns

Periods ended
December 31, 2016

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The following table shows the average annual total returns for the fund, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund.

In addition, the table shows hypothetical after-tax returns to demonstrate how taxes paid by a shareholder may influence returns. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as a 401(k) account or individual retirement account.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Updated performance information is available through troweprice.com.

Spectrum International Fund | Spectrum International Fund

Risk/Return:

rr_RiskReturnAbstract

Redemption fee (as a percentage of amount redeemed on shares held for 90 days or less)

rr_RedemptionFeeOverRedemption

2.00%

^[1]

Maximum account fee

rr_MaximumAccountFee

$ 20

^[1],[2]

Management fees

rr_ManagementFeesOverAssets

none

^[1]

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

^[1]

Other expenses

rr_OtherExpensesOverAssets

^[1]

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.94%

^[1]

Total annual fund operating expenses

rr_ExpensesOverAssets

0.94%

^[1]

1 year

rr_ExpenseExampleYear01

$ 96

3 years

rr_ExpenseExampleYear03

300

5 years

rr_ExpenseExampleYear05

520

10 years

rr_ExpenseExampleYear10

$ 1,155

2007

rr_AnnualReturn2007

15.73%

2008

rr_AnnualReturn2008

(46.39%)

2009

rr_AnnualReturn2009

44.99%

2010

rr_AnnualReturn2010

13.52%

2011

rr_AnnualReturn2011

(11.61%)

2012

rr_AnnualReturn2012

19.29%

2013

rr_AnnualReturn2013

18.17%

2014

rr_AnnualReturn2014

(3.07%)

2015

rr_AnnualReturn2015

(1.39%)

2016

rr_AnnualReturn2016

0.39%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

31.13%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(22.45%)

1 Year

rr_AverageAnnualReturnYear01

0.39%

5 Years

rr_AverageAnnualReturnYear05

6.23%

10 Years

rr_AverageAnnualReturnYear10

2.02%

Inception date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 1996

Spectrum International Fund | Returns after taxes on distributions | Spectrum International Fund

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.04%

5 Years

rr_AverageAnnualReturnYear05

5.92%

10 Years

rr_AverageAnnualReturnYear10

1.41%

Inception date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 1996

Spectrum International Fund | Returns after taxes on distributions and sale of fund shares | Spectrum International Fund

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.70%

5 Years

rr_AverageAnnualReturnYear05

4.99%

10 Years

rr_AverageAnnualReturnYear10

1.60%

Inception date

rr_AverageAnnualReturnInceptionDate

Dec. 31, 1996

Spectrum International Fund | MSCI All Country World Index ex USA (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

5.01%

5 Years

rr_AverageAnnualReturnYear05

5.48%

10 Years

rr_AverageAnnualReturnYear10

1.42%

Spectrum International Fund | Combined Index Portfolio (reflects no deduction for fees, expenses, or taxes)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

5.01%

^[3]

5 Years

rr_AverageAnnualReturnYear05

5.48%

^[3]

10 Years

rr_AverageAnnualReturnYear10

1.99%

^[3]

Spectrum International Fund | Lipper International Multi-Cap Growth Funds Average

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

(1.23%)

5 Years

rr_AverageAnnualReturnYear05

5.88%

10 Years

rr_AverageAnnualReturnYear10

0.80%

[1] While the fund itself charges no management fee, it will indirectly bear its pro-rata share of the expenses of the underlying T. Rowe Price funds in which it invests (acquired funds). The acquired funds are expected to bear the operating expenses of the fund.

[2] Subject to certain exceptions, accounts with a balance of less than $10,000 are charged an annual $20 fee.

[3] Combined Index Portfolio performance benchmark reflects the performance of the 90% MSCI EAFE Index/10% J.P. Morgan Non-U.S. Dollar Government Bond Index to 2/28/09 and the MSCI All Country World Index ex USA from 3/1/09 forward.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	T. Rowe Price Spectrum Fund, Inc.
Prospectus Date	rr_ProspectusDate	May 01, 2017
Document Creation Date	dei_DocumentCreationDate	Apr. 27, 2017