Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	DEUTSCHE GLOBAL/INTERNATIONAL FUND, INC.
Prospectus Date	rr_ProspectusDate	Feb. 01, 2016
Supplement [Text Block]	dgifi_SupplementTextBlock	SUPPLEMENT TO THE CURRENTLY EFFECTIVE PROSPECTUS Deutsche Global Growth Fund Effective on or about October 3, 2016, the prospectus is supplemented as follows: The following information replaces the existing disclosure contained in the "PRINCIPAL INVESTMENT STRATEGY" section of the summary section of the fund's prospectus and the "FUND DETAILS" section of the fund's prospectus: Main Investments. The fund invests at least 65% of its total assets in US and foreign equities (equities issued by US and foreign-based companies). The fund can invest in companies of any size and from any country, including countries with emerging economies. The fund's equity investments may also include preferred stocks and other securities with equity characteristics, such as convertible securities and warrants. Management process. Portfolio management aims to add value through stock selection. In choosing securities, portfolio management employs a risk-balanced bottom-up selection process to identify companies it believes are well-positioned. Portfolio management utilizes a proprietary investment process designed to identify attractive investments utilizing proprietary research, including regional and sector research, conducted by in-house analysts. The investment process also takes into consideration various valuation metrics to assess the attractiveness of stocks and assists portfolio management in devising allocations among investable securities. Portfolio management uses analytical tools to actively monitor the risk profile of the portfolio as compared to appropriate benchmarks. Portfolio management will normally sell a stock when its price fully reflects portfolio management's estimate of its fundamental value, its fundamentals have deteriorated, other investments offer better opportunities or in the course of adjusting the fund's exposure to a given country or sector.
Deutsche Global Growth Fund
Risk/Return:	rr_RiskReturnAbstract
Supplement [Text Block]	dgifi_SupplementTextBlock	SUPPLEMENT TO THE CURRENTLY EFFECTIVE PROSPECTUS Deutsche Global Growth Fund Effective on or about October 3, 2016, the prospectus is supplemented as follows: The following information replaces the existing disclosure contained in the "PRINCIPAL INVESTMENT STRATEGY" section of the summary section of the fund's prospectus and the "FUND DETAILS" section of the fund's prospectus: Main Investments. The fund invests at least 65% of its total assets in US and foreign equities (equities issued by US and foreign-based companies). The fund can invest in companies of any size and from any country, including countries with emerging economies. The fund's equity investments may also include preferred stocks and other securities with equity characteristics, such as convertible securities and warrants. Management process. Portfolio management aims to add value through stock selection. In choosing securities, portfolio management employs a risk-balanced bottom-up selection process to identify companies it believes are well-positioned. Portfolio management utilizes a proprietary investment process designed to identify attractive investments utilizing proprietary research, including regional and sector research, conducted by in-house analysts. The investment process also takes into consideration various valuation metrics to assess the attractiveness of stocks and assists portfolio management in devising allocations among investable securities. Portfolio management uses analytical tools to actively monitor the risk profile of the portfolio as compared to appropriate benchmarks. Portfolio management will normally sell a stock when its price fully reflects portfolio management's estimate of its fundamental value, its fundamentals have deteriorated, other investments offer better opportunities or in the course of adjusting the fund's exposure to a given country or sector.
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Main Investments. The fund invests at least 65% of its total assets in US and foreign equities (equities issued by US and foreign-based companies). The fund can invest in companies of any size and from any country, including countries with emerging economies. The fund's equity investments may also include preferred stocks and other securities with equity characteristics, such as convertible securities and warrants. Management process. Portfolio management aims to add value through stock selection. In choosing securities, portfolio management employs a risk-balanced bottom-up selection process to identify companies it believes are well-positioned. Portfolio management utilizes a proprietary investment process designed to identify attractive investments utilizing proprietary research, including regional and sector research, conducted by in-house analysts. The investment process also takes into consideration various valuation metrics to assess the attractiveness of stocks and assists portfolio management in devising allocations among investable securities. Portfolio management uses analytical tools to actively monitor the risk profile of the portfolio as compared to appropriate benchmarks. Portfolio management will normally sell a stock when its price fully reflects portfolio management's estimate of its fundamental value, its fundamentals have deteriorated, other investments offer better opportunities or in the course of adjusting the fund's exposure to a given country or sector.

dei_EntityRegistrantName

DEUTSCHE GLOBAL/INTERNATIONAL FUND, INC.

dgifi_SupplementTextBlock

SUPPLEMENT TO THE CURRENTLY EFFECTIVE PROSPECTUS

Deutsche Global Growth Fund

Effective on or about October 3, 2016, the prospectus is supplemented as follows:

The following information replaces the existing disclosure contained in the "PRINCIPAL INVESTMENT STRATEGY" section of the summary section of the fund's prospectus and the "FUND DETAILS" section of the fund's prospectus:

Main Investments. The fund invests at least 65% of its total assets in US and foreign equities (equities issued by US and foreign-based companies). The fund can invest in companies of any size and from any country, including countries with emerging economies. The fund's equity investments may also include preferred stocks and other securities with equity characteristics, such as convertible securities and warrants.

Management process. Portfolio management aims to add value through stock selection. In choosing securities, portfolio management employs a risk-balanced bottom-up selection process to identify companies it believes are well-positioned. Portfolio management utilizes a proprietary investment process designed to identify attractive investments utilizing proprietary research, including regional and sector research, conducted by in-house analysts. The investment process also takes into consideration various valuation metrics to assess the attractiveness of stocks and assists portfolio management in devising allocations among investable securities.

Portfolio management uses analytical tools to actively monitor the risk profile of the portfolio as compared to appropriate benchmarks. Portfolio management will normally sell a stock when its price fully reflects portfolio management's estimate of its fundamental value, its fundamentals have deteriorated, other investments offer better opportunities or in the course of adjusting the fund's exposure to a given country or sector.

Risk/Return:

rr_RiskReturnAbstract

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Main Investments. The fund invests at least 65% of its total assets in US and foreign equities (equities issued by US and foreign-based companies). The fund can invest in companies of any size and from any country, including countries with emerging economies. The fund's equity investments may also include preferred stocks and other securities with equity characteristics, such as convertible securities and warrants.

Management process. Portfolio management aims to add value through stock selection. In choosing securities, portfolio management employs a risk-balanced bottom-up selection process to identify companies it believes are well-positioned. Portfolio management utilizes a proprietary investment process designed to identify attractive investments utilizing proprietary research, including regional and sector research, conducted by in-house analysts. The investment process also takes into consideration various valuation metrics to assess the attractiveness of stocks and assists portfolio management in devising allocations among investable securities.

Portfolio management uses analytical tools to actively monitor the risk profile of the portfolio as compared to appropriate benchmarks. Portfolio management will normally sell a stock when its price fully reflects portfolio management's estimate of its fundamental value, its fundamentals have deteriorated, other investments offer better opportunities or in the course of adjusting the fund's exposure to a given country or sector.