Nationwide Variable Insurance Trust N-CSRS 28 Aug 24 Certified semi-annual shareholder report (management investment company) Financial data

Form N-CSR Cover

Form N-CSR Cover	6 Months Ended
	Jun. 30, 2024
Shareholder Report [Line Items]
Document Type	N-CSRS
Amendment Flag	false
Registrant Name	Nationwide Variable Insurance Trust
Entity Central Index Key	0000353905
Entity Investment Company Type	N-1A
Document Period End Date	Jun. 30, 2024

Shareholder Report

Shareholder Report	6 Months Ended
	Jun. 30, 2024 USD ($) Holding
Shareholder Report [Line Items]
Document Type	N-CSRS
Amendment Flag	false
Registrant Name	Nationwide Variable Insurance Trust
Entity Central Index Key	0000353905
Entity Investment Company Type	N-1A
Document Period End Date	Jun. 30, 2024
C000059814
Shareholder Report [Line Items]
Fund Name	NVIT Allspring Discovery Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Allspring Discovery Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B18">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $43 0.82%
Expenses Paid, Amount	$ 43
Expense Ratio, Percent	0.82%
AssetsNet	$ 455,314,108
Holdings Count | Holding	79
InvestmentCompanyPortfolioTurnover	31.58%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $455,314,108 Number of Portfolio Holdings 79 Portfolio Turnover Rate 31.58%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.1% Repurchase Agreements 8.3% Other liabilities in excess of assets - Top Industries Footnote Reference Software 10.9% Commercial Services & Supplies 6.9% Biotechnology 6.8% Semiconductors & Semiconductor Equipment 5.6% Hotels, Restaurants & Leisure 5.3% Health Care Equipment & Supplies 4.7% Trading Companies & Distributors 4.3% Capital Markets 4.0% Health Care Providers & Services 3.9% Life Sciences Tools & Services 3.5% Other Industries Footnote Reference 44.1% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059815
Shareholder Report [Line Items]
Fund Name	NVIT Allspring Discovery Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Allspring Discovery Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B35">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $56 1.07%
Expenses Paid, Amount	$ 56
Expense Ratio, Percent	1.07%
AssetsNet	$ 455,314,108
Holdings Count | Holding	79
InvestmentCompanyPortfolioTurnover	31.58%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $455,314,108 Number of Portfolio Holdings 79 Portfolio Turnover Rate 31.58%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.1% Repurchase Agreements 8.3% Other liabilities in excess of assets - Top Industries Footnote Reference Software 10.9% Commercial Services & Supplies 6.9% Biotechnology 6.8% Semiconductors & Semiconductor Equipment 5.6% Hotels, Restaurants & Leisure 5.3% Health Care Equipment & Supplies 4.7% Trading Companies & Distributors 4.3% Capital Markets 4.0% Health Care Providers & Services 3.9% Life Sciences Tools & Services 3.5% Other Industries Footnote Reference 44.1% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000033348
Shareholder Report [Line Items]
Fund Name	NVIT American Funds Asset Allocation Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT American Funds Asset Allocation Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B52">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Footnote Reference Costs paid as a percentage of a $10,000 investment Footnote Reference Class II $48 0.93% Footnote Description Footnote * The table above reflects the expenses of both the Fund and its associated American Funds Master Fund.
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.93%
Expenses Represent Both Master and Feeder [Text]	The table above reflects the expenses of both the Fund and its associated American Funds Master Fund.
AssetsNet	$ 6,464,916,016
Holdings Count | Holding	1
InvestmentCompanyPortfolioTurnover	4.97%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $6,464,916,016 Number of Portfolio Holdings 1 Portfolio Turnover Rate 4.97%
Holdings [Text Block]	Top Ten Holdings Footnote Reference American Funds Asset Allocation Fund, Class 1 100.0% Footnote Description Footnote 1 Percentages indicated are based upon total investments as of June 30, 2024.
C000033350
Shareholder Report [Line Items]
Fund Name	NVIT American Funds Bond Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT American Funds Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B70">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Footnote Reference Costs paid as a percentage of a $10,000 investment Footnote Reference Class II $44 0.88% Footnote Description Footnote * The table above reflects the expenses of both the Fund and its associated American Funds Master Fund.
Expenses Paid, Amount	$ 44
Expense Ratio, Percent	0.88%
Expenses Represent Both Master and Feeder [Text]	The table above reflects the expenses of both the Fund and its associated American Funds Master Fund.
AssetsNet	$ 3,430,220,080
Holdings Count | Holding	1
InvestmentCompanyPortfolioTurnover	6.09%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $3,430,220,080 Number of Portfolio Holdings 1 Portfolio Turnover Rate 6.09%
Holdings [Text Block]	Top Ten Holdings Footnote Reference American Funds The Bond Fund of America, Class 1 100.0% Footnote Description Footnote 1 Percentages indicated are based upon total investments as of June 30, 2024.
C000033346
Shareholder Report [Line Items]
Fund Name	NVIT American Funds Global Growth Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT American Funds Global Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B88">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Footnote Reference Costs paid as a percentage of a $10,000 investment Footnote Reference Class II $56 1.05% Footnote Description Footnote * The table above reflects the expenses of both the Fund and its associated American Funds Master Fund.
Expenses Paid, Amount	$ 56
Expense Ratio, Percent	1.05%
Expenses Represent Both Master and Feeder [Text]	The table above reflects the expenses of both the Fund and its associated American Funds Master Fund.
AssetsNet	$ 580,730,746
Holdings Count | Holding	1
InvestmentCompanyPortfolioTurnover	4.95%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $580,730,746 Number of Portfolio Holdings 1 Portfolio Turnover Rate 4.95%
Holdings [Text Block]	Top Ten Holdings Footnote Reference American Funds Global Growth Fund, Class 1 100.0% Footnote Description Footnote 1 Percentages indicated are based upon total investments as of June 30, 2024.
C000033344
Shareholder Report [Line Items]
Fund Name	NVIT American Funds Growth Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT American Funds Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B106">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Footnote Reference Costs paid as a percentage of a $10,000 investment Footnote Reference Class II $52 0.97% Footnote Description Footnote * The table above reflects the expenses of both the Fund and its associated American Funds Master Fund.
Expenses Paid, Amount	$ 52
Expense Ratio, Percent	0.97%
Expenses Represent Both Master and Feeder [Text]	The table above reflects the expenses of both the Fund and its associated American Funds Master Fund.
AssetsNet	$ 1,792,986,224
Holdings Count | Holding	1
InvestmentCompanyPortfolioTurnover	4.51%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,792,986,224 Number of Portfolio Holdings 1 Portfolio Turnover Rate 4.51%
Holdings [Text Block]	Top Ten Holdings Footnote Reference American Funds Growth Fund, Class 1 100.0% Footnote Description Footnote 1 Percentages indicated are based upon total investments as of June 30, 2024.
C000046995
Shareholder Report [Line Items]
Fund Name	NVIT American Funds Growth-Income Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT American Funds Growth-Income Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B124">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Footnote Reference Costs paid as a percentage of a $10,000 investment Footnote Reference Class II $48 0.91% Footnote Description Footnote * The table above reflects the expenses of both the Fund and its associated American Funds Master Fund.
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.91%
Expenses Represent Both Master and Feeder [Text]	The table above reflects the expenses of both the Fund and its associated American Funds Master Fund.
AssetsNet	$ 4,040,954,676
Holdings Count | Holding	1
InvestmentCompanyPortfolioTurnover	4.77%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $4,040,954,676 Number of Portfolio Holdings 1 Portfolio Turnover Rate 4.77%
Holdings [Text Block]	Top Ten Holdings Footnote Reference American Funds Growth-Income Fund, Class 1 100.0% Footnote Description Footnote 1 Percentages indicated are based upon total investments as of June 30, 2024.
C000014754
Shareholder Report [Line Items]
Fund Name	NVIT Amundi Multi Sector Bond Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Amundi Multi Sector Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B142">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $41 0.81%
Expenses Paid, Amount	$ 41
Expense Ratio, Percent	0.81%
AssetsNet	$ 287,157,363
Holdings Count | Holding	316
InvestmentCompanyPortfolioTurnover	113.83%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $287,157,363 Number of Portfolio Holdings 316 Portfolio Turnover Rate 113.83%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Corporate Bonds 56.2% Collateralized Mortgage Obligations 12.1% Repurchase Agreements 11.7% Mortgage-Backed Security 9.1% Commercial Mortgage-Backed Securities 7.3% Asset-Backed Securities 7.1% Loan Participations 1.5% Foreign Government Securities 1.2% U.S. Treasury Obligation 1.2% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 10.6% Insurance 5.5% Financial Services 5.2% Oil, Gas & Consumable Fuels 4.1% Consumer Finance 3.0% Hotels, Restaurants & Leisure 2.9% Capital Markets 2.8% Passenger Airlines 1.6% Electric Utilities 1.5% Media 1.4% Other Industries Footnote Reference 61.4% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014724
Shareholder Report [Line Items]
Fund Name	NVIT AQR Large Cap Defensive Style Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT AQR Large Cap Defensive Style Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B159">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $28 0.53%
Expenses Paid, Amount	$ 28
Expense Ratio, Percent	0.53%
AssetsNet	$ 675,734,109
Holdings Count | Holding	169
InvestmentCompanyPortfolioTurnover	9.34%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $675,734,109 Number of Portfolio Holdings 169 Portfolio Turnover Rate 9.34%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.4% Repurchase Agreements 2.0% Other liabilities in excess of assets - Top Industries Footnote Reference Insurance 8.1% Health Care Providers & Services 5.7% Biotechnology 5.1% Food Products 5.1% Software 5.0% Consumer Staples Distribution & Retail 4.7% Pharmaceuticals 4.5% Household Products 4.0% Beverages 3.9% Commercial Services & Supplies 3.5% Other Industries Footnote Reference 50.4% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014725
Shareholder Report [Line Items]
Fund Name	NVIT AQR Large Cap Defensive Style Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT AQR Large Cap Defensive Style Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B176">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $76 1.47%
Expenses Paid, Amount	$ 76
Expense Ratio, Percent	1.47%
AssetsNet	$ 675,734,109
Holdings Count | Holding	169
InvestmentCompanyPortfolioTurnover	9.34%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $675,734,109 Number of Portfolio Holdings 169 Portfolio Turnover Rate 9.34%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.4% Repurchase Agreements 2.0% Other liabilities in excess of assets - Top Industries Footnote Reference Insurance 8.1% Health Care Providers & Services 5.7% Biotechnology 5.1% Food Products 5.1% Software 5.0% Consumer Staples Distribution & Retail 4.7% Pharmaceuticals 4.5% Household Products 4.0% Beverages 3.9% Commercial Services & Supplies 3.5% Other Industries Footnote Reference 50.4% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014727
Shareholder Report [Line Items]
Fund Name	NVIT AQR Large Cap Defensive Style Fund
Class Name	Class IV
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT AQR Large Cap Defensive Style Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B193">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class IV $63 1.22%
Expenses Paid, Amount	$ 63
Expense Ratio, Percent	1.22%
AssetsNet	$ 675,734,109
Holdings Count | Holding	169
InvestmentCompanyPortfolioTurnover	9.34%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $675,734,109 Number of Portfolio Holdings 169 Portfolio Turnover Rate 9.34%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.4% Repurchase Agreements 2.0% Other liabilities in excess of assets - Top Industries Footnote Reference Insurance 8.1% Health Care Providers & Services 5.7% Biotechnology 5.1% Food Products 5.1% Software 5.0% Consumer Staples Distribution & Retail 4.7% Pharmaceuticals 4.5% Household Products 4.0% Beverages 3.9% Commercial Services & Supplies 3.5% Other Industries Footnote Reference 50.4% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014751
Shareholder Report [Line Items]
Fund Name	NVIT BlackRock Equity Dividend Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BlackRock Equity Dividend Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B210">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $41 0.80%
Expenses Paid, Amount	$ 41
Expense Ratio, Percent	0.80%
AssetsNet	$ 531,494,899
Holdings Count | Holding	96
InvestmentCompanyPortfolioTurnover	23.35%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $531,494,899 Number of Portfolio Holdings 96 Portfolio Turnover Rate 23.35%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 94.8% Repurchase Agreements 2.8% Master Limited Partnership 1.0% Other assets in excess of liabilities 1.4% Top Industries Footnote Reference Banks 11.9% Health Care Providers & Services 9.1% Oil, Gas & Consumable Fuels 7.9% Insurance 5.7% Health Care Equipment & Supplies 4.7% Pharmaceuticals 4.0% Electric Utilities 3.7% Technology Hardware, Storage & Peripherals 3.7% Aerospace & Defense 3.6% Media 3.4% Other Industries Footnote Reference 42.3% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014752
Shareholder Report [Line Items]
Fund Name	NVIT BlackRock Equity Dividend Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BlackRock Equity Dividend Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B227">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $54 1.05%
Expenses Paid, Amount	$ 54
Expense Ratio, Percent	1.05%
AssetsNet	$ 531,494,899
Holdings Count | Holding	96
InvestmentCompanyPortfolioTurnover	23.35%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $531,494,899 Number of Portfolio Holdings 96 Portfolio Turnover Rate 23.35%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 94.8% Repurchase Agreements 2.8% Master Limited Partnership 1.0% Other assets in excess of liabilities 1.4% Top Industries Footnote Reference Banks 11.9% Health Care Providers & Services 9.1% Oil, Gas & Consumable Fuels 7.9% Insurance 5.7% Health Care Equipment & Supplies 4.7% Pharmaceuticals 4.0% Electric Utilities 3.7% Technology Hardware, Storage & Peripherals 3.7% Aerospace & Defense 3.6% Media 3.4% Other Industries Footnote Reference 42.3% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014753
Shareholder Report [Line Items]
Fund Name	NVIT BlackRock Equity Dividend Fund
Class Name	Class IV
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BlackRock Equity Dividend Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B244">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class IV $41 0.80%
Expenses Paid, Amount	$ 41
Expense Ratio, Percent	0.80%
AssetsNet	$ 531,494,899
Holdings Count | Holding	96
InvestmentCompanyPortfolioTurnover	23.35%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $531,494,899 Number of Portfolio Holdings 96 Portfolio Turnover Rate 23.35%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 94.8% Repurchase Agreements 2.8% Master Limited Partnership 1.0% Other assets in excess of liabilities 1.4% Top Industries Footnote Reference Banks 11.9% Health Care Providers & Services 9.1% Oil, Gas & Consumable Fuels 7.9% Insurance 5.7% Health Care Equipment & Supplies 4.7% Pharmaceuticals 4.0% Electric Utilities 3.7% Technology Hardware, Storage & Peripherals 3.7% Aerospace & Defense 3.6% Media 3.4% Other Industries Footnote Reference 42.3% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000154836
Shareholder Report [Line Items]
Fund Name	NVIT BlackRock Managed Global Allocation Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BlackRock Managed Global Allocation Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B261">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $23 0.45%
Expenses Paid, Amount	$ 23
Expense Ratio, Percent	0.45%
AssetsNet	$ 342,068,984
Holdings Count | Holding	5
InvestmentCompanyPortfolioTurnover	0.71%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $342,068,984 Number of Portfolio Holdings 5 Portfolio Turnover Rate 0.71%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Alternative Assets 93.9% Other assets in excess of liabilities 6.1% Top Ten Holdings Footnote Reference BlackRock Global Allocation VI Fund, Class I 100.0% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060396
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Aggressive Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Aggressive Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B278">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $16 0.31%
Expenses Paid, Amount	$ 16
Expense Ratio, Percent	0.31%
AssetsNet	$ 230,088,129
Holdings Count | Holding	9
InvestmentCompanyPortfolioTurnover	4.63%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $230,088,129 Number of Portfolio Holdings 9 Portfolio Turnover Rate 4.63%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 86.1% Fixed Income Fund 13.9% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 38.1% NVIT U.S. 130/30 Equity Fund, Class Y 16.3% NVIT GS International Equity Insights Fund, Class Y 13.4% NVIT Core Bond Fund, Class Y 8.0% NVIT GS Emerging Markets Equity Insights Fund, Class Y 7.2% Nationwide International Small Cap Fund, Class R6 6.2% NVIT BNY Mellon Core Plus Bond Fund, Class Y 5.0% NVIT GS Small Cap Equity Insights Fund, Class Y 4.8% Nationwide Bond Fund, Class R6 1.0% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060397
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Aggressive Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Aggressive Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B295">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $21 0.40%
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.40%
AssetsNet	$ 230,088,129
Holdings Count | Holding	9
InvestmentCompanyPortfolioTurnover	4.63%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $230,088,129 Number of Portfolio Holdings 9 Portfolio Turnover Rate 4.63%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 86.1% Fixed Income Fund 13.9% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 38.1% NVIT U.S. 130/30 Equity Fund, Class Y 16.3% NVIT GS International Equity Insights Fund, Class Y 13.4% NVIT Core Bond Fund, Class Y 8.0% NVIT GS Emerging Markets Equity Insights Fund, Class Y 7.2% Nationwide International Small Cap Fund, Class R6 6.2% NVIT BNY Mellon Core Plus Bond Fund, Class Y 5.0% NVIT GS Small Cap Equity Insights Fund, Class Y 4.8% Nationwide Bond Fund, Class R6 1.0% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000244891
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Aggressive Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Aggressive Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B312">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $8 0.16%
Expenses Paid, Amount	$ 8
Expense Ratio, Percent	0.16%
AssetsNet	$ 230,088,129
Holdings Count | Holding	9
InvestmentCompanyPortfolioTurnover	4.63%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $230,088,129 Number of Portfolio Holdings 9 Portfolio Turnover Rate 4.63%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 86.1% Fixed Income Fund 13.9% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 38.1% NVIT U.S. 130/30 Equity Fund, Class Y 16.3% NVIT GS International Equity Insights Fund, Class Y 13.4% NVIT Core Bond Fund, Class Y 8.0% NVIT GS Emerging Markets Equity Insights Fund, Class Y 7.2% Nationwide International Small Cap Fund, Class R6 6.2% NVIT BNY Mellon Core Plus Bond Fund, Class Y 5.0% NVIT GS Small Cap Equity Insights Fund, Class Y 4.8% Nationwide Bond Fund, Class R6 1.0% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060405
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Balanced Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Balanced Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B329">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $15 0.29%
Expenses Paid, Amount	$ 15
Expense Ratio, Percent	0.29%
AssetsNet	$ 1,580,404,833
Holdings Count | Holding	11
InvestmentCompanyPortfolioTurnover	0.09%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,580,404,833 Number of Portfolio Holdings 11 Portfolio Turnover Rate 0.09%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 54.1% Equity Fund 45.9% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT Core Bond Fund, Class Y 20.5% NVIT GS Large Cap Equity Fund, Class Y 20.1% NVIT BNY Mellon Core Plus Bond Fund, Class Y 18.3% NVIT Loomis Short Term Bond Fund, Class Y 10.1% NVIT U.S. 130/30 Equity Fund, Class Y 9.0% NVIT GS International Equity Insights Fund, Class Y 8.1% NVIT GS Emerging Markets Equity Insights Fund, Class Y 4.1% Nationwide Bond Fund, Class R6 3.6% Nationwide International Small Cap Fund, Class R6 2.5% NVIT GS Small Cap Equity Insights Fund, Class Y 2.1% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.6% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060404
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Balanced Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Balanced Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B346">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $19 0.38%
Expenses Paid, Amount	$ 19
Expense Ratio, Percent	0.38%
AssetsNet	$ 1,580,404,833
Holdings Count | Holding	11
InvestmentCompanyPortfolioTurnover	0.09%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,580,404,833 Number of Portfolio Holdings 11 Portfolio Turnover Rate 0.09%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 54.1% Equity Fund 45.9% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT Core Bond Fund, Class Y 20.5% NVIT GS Large Cap Equity Fund, Class Y 20.1% NVIT BNY Mellon Core Plus Bond Fund, Class Y 18.3% NVIT Loomis Short Term Bond Fund, Class Y 10.1% NVIT U.S. 130/30 Equity Fund, Class Y 9.0% NVIT GS International Equity Insights Fund, Class Y 8.1% NVIT GS Emerging Markets Equity Insights Fund, Class Y 4.1% Nationwide Bond Fund, Class R6 3.6% Nationwide International Small Cap Fund, Class R6 2.5% NVIT GS Small Cap Equity Insights Fund, Class Y 2.1% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.6% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000244895
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Balanced Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Balanced Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B363">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $7 0.14%
Expenses Paid, Amount	$ 7
Expense Ratio, Percent	0.14%
AssetsNet	$ 1,580,404,833
Holdings Count | Holding	11
InvestmentCompanyPortfolioTurnover	0.09%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,580,404,833 Number of Portfolio Holdings 11 Portfolio Turnover Rate 0.09%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 54.1% Equity Fund 45.9% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT Core Bond Fund, Class Y 20.5% NVIT GS Large Cap Equity Fund, Class Y 20.1% NVIT BNY Mellon Core Plus Bond Fund, Class Y 18.3% NVIT Loomis Short Term Bond Fund, Class Y 10.1% NVIT U.S. 130/30 Equity Fund, Class Y 9.0% NVIT GS International Equity Insights Fund, Class Y 8.1% NVIT GS Emerging Markets Equity Insights Fund, Class Y 4.1% Nationwide Bond Fund, Class R6 3.6% Nationwide International Small Cap Fund, Class R6 2.5% NVIT GS Small Cap Equity Insights Fund, Class Y 2.1% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.6% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060400
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Capital Appreciation Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Capital Appreciation Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B380">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $15 0.28%
Expenses Paid, Amount	$ 15
Expense Ratio, Percent	0.28%
AssetsNet	$ 1,930,402,048
Holdings Count | Holding	11
InvestmentCompanyPortfolioTurnover	0.07%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,930,402,048 Number of Portfolio Holdings 11 Portfolio Turnover Rate 0.07%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 67.1% Fixed Income Fund 32.9% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 31.0% NVIT Core Bond Fund, Class Y 14.9% NVIT BNY Mellon Core Plus Bond Fund, Class Y 12.1% NVIT U.S. 130/30 Equity Fund, Class Y 11.6% NVIT GS International Equity Insights Fund, Class Y 9.5% NVIT GS Emerging Markets Equity Insights Fund, Class Y 6.6% Nationwide International Small Cap Fund, Class R6 4.5% NVIT GS Small Cap Equity Insights Fund, Class Y 3.8% NVIT Loomis Short Term Bond Fund, Class Y 3.0% Nationwide Bond Fund, Class R6 2.0% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.0% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060401
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Capital Appreciation Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Capital Appreciation Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B397">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $19 0.37%
Expenses Paid, Amount	$ 19
Expense Ratio, Percent	0.37%
AssetsNet	$ 1,930,402,048
Holdings Count | Holding	11
InvestmentCompanyPortfolioTurnover	0.07%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,930,402,048 Number of Portfolio Holdings 11 Portfolio Turnover Rate 0.07%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 67.1% Fixed Income Fund 32.9% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 31.0% NVIT Core Bond Fund, Class Y 14.9% NVIT BNY Mellon Core Plus Bond Fund, Class Y 12.1% NVIT U.S. 130/30 Equity Fund, Class Y 11.6% NVIT GS International Equity Insights Fund, Class Y 9.5% NVIT GS Emerging Markets Equity Insights Fund, Class Y 6.6% Nationwide International Small Cap Fund, Class R6 4.5% NVIT GS Small Cap Equity Insights Fund, Class Y 3.8% NVIT Loomis Short Term Bond Fund, Class Y 3.0% Nationwide Bond Fund, Class R6 2.0% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.0% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000244893
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Capital Appreciation Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Capital Appreciation Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B414">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $7 0.13%
Expenses Paid, Amount	$ 7
Expense Ratio, Percent	0.13%
AssetsNet	$ 1,930,402,048
Holdings Count | Holding	11
InvestmentCompanyPortfolioTurnover	0.07%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,930,402,048 Number of Portfolio Holdings 11 Portfolio Turnover Rate 0.07%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 67.1% Fixed Income Fund 32.9% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 31.0% NVIT Core Bond Fund, Class Y 14.9% NVIT BNY Mellon Core Plus Bond Fund, Class Y 12.1% NVIT U.S. 130/30 Equity Fund, Class Y 11.6% NVIT GS International Equity Insights Fund, Class Y 9.5% NVIT GS Emerging Markets Equity Insights Fund, Class Y 6.6% Nationwide International Small Cap Fund, Class R6 4.5% NVIT GS Small Cap Equity Insights Fund, Class Y 3.8% NVIT Loomis Short Term Bond Fund, Class Y 3.0% Nationwide Bond Fund, Class R6 2.0% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.0% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060408
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Conservative Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Conservative Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B431">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $15 0.29%
Expenses Paid, Amount	$ 15
Expense Ratio, Percent	0.29%
AssetsNet	$ 495,727,294
Holdings Count | Holding	11
InvestmentCompanyPortfolioTurnover	4.02%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $495,727,294 Number of Portfolio Holdings 11 Portfolio Turnover Rate 4.02%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 83.4% Equity Fund 16.6% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT Core Bond Fund, Class Y 32.0% NVIT BNY Mellon Core Plus Bond Fund, Class Y 24.1% NVIT Loomis Short Term Bond Fund, Class Y 15.1% NVIT GS Large Cap Equity Fund, Class Y 7.9% Nationwide Bond Fund, Class R6 5.6% Nationwide Inflation-Protected Securities Fund, Class R6 4.1% NVIT U.S. 130/30 Equity Fund, Class Y 3.4% NVIT GS International Equity Insights Fund, Class Y 3.3% NVIT DoubleLine Total Return Tactical Fund, Class Y 2.6% NVIT GS Emerging Markets Equity Insights Fund, Class Y 1.4% NVIT GS Small Cap Equity Insights Fund, Class Y 0.5% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060409
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Conservative Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Conservative Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B448">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $19 0.38%
Expenses Paid, Amount	$ 19
Expense Ratio, Percent	0.38%
AssetsNet	$ 495,727,294
Holdings Count | Holding	11
InvestmentCompanyPortfolioTurnover	4.02%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $495,727,294 Number of Portfolio Holdings 11 Portfolio Turnover Rate 4.02%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 83.4% Equity Fund 16.6% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT Core Bond Fund, Class Y 32.0% NVIT BNY Mellon Core Plus Bond Fund, Class Y 24.1% NVIT Loomis Short Term Bond Fund, Class Y 15.1% NVIT GS Large Cap Equity Fund, Class Y 7.9% Nationwide Bond Fund, Class R6 5.6% Nationwide Inflation-Protected Securities Fund, Class R6 4.1% NVIT U.S. 130/30 Equity Fund, Class Y 3.4% NVIT GS International Equity Insights Fund, Class Y 3.3% NVIT DoubleLine Total Return Tactical Fund, Class Y 2.6% NVIT GS Emerging Markets Equity Insights Fund, Class Y 1.4% NVIT GS Small Cap Equity Insights Fund, Class Y 0.5% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000244897
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Conservative Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Conservative Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B465">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $7 0.14%
Expenses Paid, Amount	$ 7
Expense Ratio, Percent	0.14%
AssetsNet	$ 495,727,294
Holdings Count | Holding	11
InvestmentCompanyPortfolioTurnover	4.02%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $495,727,294 Number of Portfolio Holdings 11 Portfolio Turnover Rate 4.02%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 83.4% Equity Fund 16.6% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT Core Bond Fund, Class Y 32.0% NVIT BNY Mellon Core Plus Bond Fund, Class Y 24.1% NVIT Loomis Short Term Bond Fund, Class Y 15.1% NVIT GS Large Cap Equity Fund, Class Y 7.9% Nationwide Bond Fund, Class R6 5.6% Nationwide Inflation-Protected Securities Fund, Class R6 4.1% NVIT U.S. 130/30 Equity Fund, Class Y 3.4% NVIT GS International Equity Insights Fund, Class Y 3.3% NVIT DoubleLine Total Return Tactical Fund, Class Y 2.6% NVIT GS Emerging Markets Equity Insights Fund, Class Y 1.4% NVIT GS Small Cap Equity Insights Fund, Class Y 0.5% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000139947
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Managed Growth &amp; Income Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Managed Growth &amp; Income Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B482">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $13 0.25%
Expenses Paid, Amount	$ 13
Expense Ratio, Percent	0.25%
AssetsNet	$ 505,047,298
Holdings Count | Holding	15
InvestmentCompanyPortfolioTurnover	0.59%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $505,047,298 Number of Portfolio Holdings 15 Portfolio Turnover Rate 0.59%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 48.9% Equity Fund 43.9% Other assets in excess of liabilities 7.2% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 22.0% NVIT Core Bond Fund, Class Y 21.5% NVIT BNY Mellon Core Plus Bond Fund, Class Y 17.0% NVIT Loomis Short Term Bond Fund, Class Y 9.4% NVIT U.S. 130/30 Equity Fund, Class Y 9.2% NVIT GS International Equity Insights Fund, Class Y 8.2% NVIT GS Emerging Markets Equity Insights Fund, Class Y 4.0% Nationwide Bond Fund, Class R6 3.3% Nationwide International Small Cap Fund, Class R6 2.2% NVIT GS Small Cap Equity Insights Fund, Class Y 1.8% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.4% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000125905
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Managed Growth &amp; Income Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Managed Growth &amp; Income Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B499">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $23 0.45%
Expenses Paid, Amount	$ 23
Expense Ratio, Percent	0.45%
AssetsNet	$ 505,047,298
Holdings Count | Holding	15
InvestmentCompanyPortfolioTurnover	0.59%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $505,047,298 Number of Portfolio Holdings 15 Portfolio Turnover Rate 0.59%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 48.9% Equity Fund 43.9% Other assets in excess of liabilities 7.2% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 22.0% NVIT Core Bond Fund, Class Y 21.5% NVIT BNY Mellon Core Plus Bond Fund, Class Y 17.0% NVIT Loomis Short Term Bond Fund, Class Y 9.4% NVIT U.S. 130/30 Equity Fund, Class Y 9.2% NVIT GS International Equity Insights Fund, Class Y 8.2% NVIT GS Emerging Markets Equity Insights Fund, Class Y 4.0% Nationwide Bond Fund, Class R6 3.3% Nationwide International Small Cap Fund, Class R6 2.2% NVIT GS Small Cap Equity Insights Fund, Class Y 1.8% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.4% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000139946
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Managed Growth Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Managed Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B516">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $11 0.22%
Expenses Paid, Amount	$ 11
Expense Ratio, Percent	0.22%
AssetsNet	$ 1,165,940,057
Holdings Count | Holding	15
InvestmentCompanyPortfolioTurnover	0.07%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,165,940,057 Number of Portfolio Holdings 15 Portfolio Turnover Rate 0.07%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 52.7% Fixed Income Fund 39.2% Other assets in excess of liabilities 8.1% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 27.6% NVIT Core Bond Fund, Class Y 18.4% NVIT BNY Mellon Core Plus Bond Fund, Class Y 14.9% NVIT U.S. 130/30 Equity Fund, Class Y 11.5% NVIT GS International Equity Insights Fund, Class Y 7.9% NVIT Loomis Short Term Bond Fund, Class Y 5.6% NVIT GS Emerging Markets Equity Insights Fund, Class Y 5.4% Nationwide International Small Cap Fund, Class R6 2.7% NVIT GS Small Cap Equity Insights Fund, Class Y 2.3% Nationwide Bond Fund, Class R6 2.3% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.4% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000125904
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Managed Growth Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Managed Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B533">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $22 0.42%
Expenses Paid, Amount	$ 22
Expense Ratio, Percent	0.42%
AssetsNet	$ 1,165,940,057
Holdings Count | Holding	15
InvestmentCompanyPortfolioTurnover	0.07%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,165,940,057 Number of Portfolio Holdings 15 Portfolio Turnover Rate 0.07%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 52.7% Fixed Income Fund 39.2% Other assets in excess of liabilities 8.1% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 27.6% NVIT Core Bond Fund, Class Y 18.4% NVIT BNY Mellon Core Plus Bond Fund, Class Y 14.9% NVIT U.S. 130/30 Equity Fund, Class Y 11.5% NVIT GS International Equity Insights Fund, Class Y 7.9% NVIT Loomis Short Term Bond Fund, Class Y 5.6% NVIT GS Emerging Markets Equity Insights Fund, Class Y 5.4% Nationwide International Small Cap Fund, Class R6 2.7% NVIT GS Small Cap Equity Insights Fund, Class Y 2.3% Nationwide Bond Fund, Class R6 2.3% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.4% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060402
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Moderate Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Moderate Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B550">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $15 0.28%
Expenses Paid, Amount	$ 15
Expense Ratio, Percent	0.28%
AssetsNet	$ 1,916,386,216
Holdings Count | Holding	11
InvestmentCompanyPortfolioTurnover	0.05%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,916,386,216 Number of Portfolio Holdings 11 Portfolio Turnover Rate 0.05%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 56.7% Fixed Income Fund 43.3% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 26.1% NVIT Core Bond Fund, Class Y 17.1% NVIT BNY Mellon Core Plus Bond Fund, Class Y 16.3% NVIT U.S. 130/30 Equity Fund, Class Y 11.3% NVIT GS International Equity Insights Fund, Class Y 7.9% NVIT Loomis Short Term Bond Fund, Class Y 5.9% NVIT GS Emerging Markets Equity Insights Fund, Class Y 5.7% Nationwide International Small Cap Fund, Class R6 3.0% NVIT GS Small Cap Equity Insights Fund, Class Y 2.7% Nationwide Bond Fund, Class R6 2.5% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.5% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060403
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Moderate Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Moderate Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B567">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $19 0.37%
Expenses Paid, Amount	$ 19
Expense Ratio, Percent	0.37%
AssetsNet	$ 1,916,386,216
Holdings Count | Holding	11
InvestmentCompanyPortfolioTurnover	0.05%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,916,386,216 Number of Portfolio Holdings 11 Portfolio Turnover Rate 0.05%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 56.7% Fixed Income Fund 43.3% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 26.1% NVIT Core Bond Fund, Class Y 17.1% NVIT BNY Mellon Core Plus Bond Fund, Class Y 16.3% NVIT U.S. 130/30 Equity Fund, Class Y 11.3% NVIT GS International Equity Insights Fund, Class Y 7.9% NVIT Loomis Short Term Bond Fund, Class Y 5.9% NVIT GS Emerging Markets Equity Insights Fund, Class Y 5.7% Nationwide International Small Cap Fund, Class R6 3.0% NVIT GS Small Cap Equity Insights Fund, Class Y 2.7% Nationwide Bond Fund, Class R6 2.5% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.5% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000244894
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Moderate Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Moderate Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B584">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $7 0.13%
Expenses Paid, Amount	$ 7
Expense Ratio, Percent	0.13%
AssetsNet	$ 1,916,386,216
Holdings Count | Holding	11
InvestmentCompanyPortfolioTurnover	0.05%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,916,386,216 Number of Portfolio Holdings 11 Portfolio Turnover Rate 0.05%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 56.7% Fixed Income Fund 43.3% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 26.1% NVIT Core Bond Fund, Class Y 17.1% NVIT BNY Mellon Core Plus Bond Fund, Class Y 16.3% NVIT U.S. 130/30 Equity Fund, Class Y 11.3% NVIT GS International Equity Insights Fund, Class Y 7.9% NVIT Loomis Short Term Bond Fund, Class Y 5.9% NVIT GS Emerging Markets Equity Insights Fund, Class Y 5.7% Nationwide International Small Cap Fund, Class R6 3.0% NVIT GS Small Cap Equity Insights Fund, Class Y 2.7% Nationwide Bond Fund, Class R6 2.5% NVIT DoubleLine Total Return Tactical Fund, Class Y 1.5% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060398
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Moderately Aggressive Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Moderately Aggressive Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B601">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $15 0.30%
Expenses Paid, Amount	$ 15
Expense Ratio, Percent	0.30%
AssetsNet	$ 454,636,967
Holdings Count | Holding	9
InvestmentCompanyPortfolioTurnover	2.02%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $454,636,967 Number of Portfolio Holdings 9 Portfolio Turnover Rate 2.02%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 76.6% Fixed Income Fund 23.5% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 33.4% NVIT U.S. 130/30 Equity Fund, Class Y 14.4% NVIT Core Bond Fund, Class Y 12.2% NVIT GS International Equity Insights Fund, Class Y 11.8% NVIT BNY Mellon Core Plus Bond Fund, Class Y 9.4% NVIT GS Emerging Markets Equity Insights Fund, Class Y 6.7% Nationwide International Small Cap Fund, Class R6 5.6% NVIT GS Small Cap Equity Insights Fund, Class Y 4.6% Nationwide Bond Fund, Class R6 1.9% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060399
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Moderately Aggressive Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Moderately Aggressive Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B618">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $20 0.39%
Expenses Paid, Amount	$ 20
Expense Ratio, Percent	0.39%
AssetsNet	$ 454,636,967
Holdings Count | Holding	9
InvestmentCompanyPortfolioTurnover	2.02%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $454,636,967 Number of Portfolio Holdings 9 Portfolio Turnover Rate 2.02%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 76.6% Fixed Income Fund 23.5% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 33.4% NVIT U.S. 130/30 Equity Fund, Class Y 14.4% NVIT Core Bond Fund, Class Y 12.2% NVIT GS International Equity Insights Fund, Class Y 11.8% NVIT BNY Mellon Core Plus Bond Fund, Class Y 9.4% NVIT GS Emerging Markets Equity Insights Fund, Class Y 6.7% Nationwide International Small Cap Fund, Class R6 5.6% NVIT GS Small Cap Equity Insights Fund, Class Y 4.6% Nationwide Bond Fund, Class R6 1.9% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000244892
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Moderately Aggressive Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Moderately Aggressive Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B635">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $8 0.15%
Expenses Paid, Amount	$ 8
Expense Ratio, Percent	0.15%
AssetsNet	$ 454,636,967
Holdings Count | Holding	9
InvestmentCompanyPortfolioTurnover	2.02%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $454,636,967 Number of Portfolio Holdings 9 Portfolio Turnover Rate 2.02%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 76.6% Fixed Income Fund 23.5% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference NVIT GS Large Cap Equity Fund, Class Y 33.4% NVIT U.S. 130/30 Equity Fund, Class Y 14.4% NVIT Core Bond Fund, Class Y 12.2% NVIT GS International Equity Insights Fund, Class Y 11.8% NVIT BNY Mellon Core Plus Bond Fund, Class Y 9.4% NVIT GS Emerging Markets Equity Insights Fund, Class Y 6.7% Nationwide International Small Cap Fund, Class R6 5.6% NVIT GS Small Cap Equity Insights Fund, Class Y 4.6% Nationwide Bond Fund, Class R6 1.9% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060406
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Moderately Conservative Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Moderately Conservative Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B652">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $15 0.29%
Expenses Paid, Amount	$ 15
Expense Ratio, Percent	0.29%
AssetsNet	$ 505,268,166
Holdings Count | Holding	12
InvestmentCompanyPortfolioTurnover	0.39%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $505,268,166 Number of Portfolio Holdings 12 Portfolio Turnover Rate 0.39%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 64.4% Equity Fund 35.7% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference NVIT Core Bond Fund, Class Y 24.4% NVIT BNY Mellon Core Plus Bond Fund, Class Y 19.3% NVIT GS Large Cap Equity Fund, Class Y 16.0% NVIT Loomis Short Term Bond Fund, Class Y 12.3% NVIT U.S. 130/30 Equity Fund, Class Y 7.3% NVIT GS International Equity Insights Fund, Class Y 6.1% Nationwide Bond Fund, Class R6 4.2% NVIT GS Emerging Markets Equity Insights Fund, Class Y 3.1% NVIT DoubleLine Total Return Tactical Fund, Class Y 2.1% Nationwide Inflation-Protected Securities Fund, Class R6 2.1% Other Holdings 3.1% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000060407
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Moderately Conservative Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Moderately Conservative Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B669">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $20 0.38%
Expenses Paid, Amount	$ 20
Expense Ratio, Percent	0.38%
AssetsNet	$ 505,268,166
Holdings Count | Holding	12
InvestmentCompanyPortfolioTurnover	0.39%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $505,268,166 Number of Portfolio Holdings 12 Portfolio Turnover Rate 0.39%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 64.4% Equity Fund 35.7% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference NVIT Core Bond Fund, Class Y 24.4% NVIT BNY Mellon Core Plus Bond Fund, Class Y 19.3% NVIT GS Large Cap Equity Fund, Class Y 16.0% NVIT Loomis Short Term Bond Fund, Class Y 12.3% NVIT U.S. 130/30 Equity Fund, Class Y 7.3% NVIT GS International Equity Insights Fund, Class Y 6.1% Nationwide Bond Fund, Class R6 4.2% NVIT GS Emerging Markets Equity Insights Fund, Class Y 3.1% NVIT DoubleLine Total Return Tactical Fund, Class Y 2.1% Nationwide Inflation-Protected Securities Fund, Class R6 2.1% Other Holdings 3.1% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000244896
Shareholder Report [Line Items]
Fund Name	NVIT Blueprint℠ Moderately Conservative Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Blueprint℠ Moderately Conservative Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B686">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $7 0.14%
Expenses Paid, Amount	$ 7
Expense Ratio, Percent	0.14%
AssetsNet	$ 505,268,166
Holdings Count | Holding	12
InvestmentCompanyPortfolioTurnover	0.39%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $505,268,166 Number of Portfolio Holdings 12 Portfolio Turnover Rate 0.39%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 64.4% Equity Fund 35.7% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference NVIT Core Bond Fund, Class Y 24.4% NVIT BNY Mellon Core Plus Bond Fund, Class Y 19.3% NVIT GS Large Cap Equity Fund, Class Y 16.0% NVIT Loomis Short Term Bond Fund, Class Y 12.3% NVIT U.S. 130/30 Equity Fund, Class Y 7.3% NVIT GS International Equity Insights Fund, Class Y 6.1% Nationwide Bond Fund, Class R6 4.2% NVIT GS Emerging Markets Equity Insights Fund, Class Y 3.1% NVIT DoubleLine Total Return Tactical Fund, Class Y 2.1% Nationwide Inflation-Protected Securities Fund, Class R6 2.1% Other Holdings 3.1% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059803
Shareholder Report [Line Items]
Fund Name	NVIT BNY Mellon Core Plus Bond Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BNY Mellon Core Plus Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B703">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $31 0.63%
Expenses Paid, Amount	$ 31
Expense Ratio, Percent	0.63%
AssetsNet	$ 1,800,523,467
Holdings Count | Holding	576
InvestmentCompanyPortfolioTurnover	36.75%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,800,523,467 Number of Portfolio Holdings 576 Portfolio Turnover Rate 36.75%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Corporate Bonds 44.7% Mortgage-Backed Securities 31.3% Asset-Backed Securities 8.4% U.S. Treasury Obligations 6.9% Repurchase Agreements 5.7% Foreign Government Securities 3.0% Collateralized Mortgage Obligations 2.4% Commercial Mortgage-Backed Securities 0.8% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 6.8% Oil, Gas & Consumable Fuels 6.7% Capital Markets 2.7% Electric Utilities 2.4% Consumer Finance 2.3% Diversified Telecommunication Services 1.8% Hotels, Restaurants & Leisure 1.5% Insurance 1.4% Aerospace & Defense 1.4% Chemicals 1.0% Other Industries Footnote Reference 72.0% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059804
Shareholder Report [Line Items]
Fund Name	NVIT BNY Mellon Core Plus Bond Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BNY Mellon Core Plus Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B720">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $44 0.88%
Expenses Paid, Amount	$ 44
Expense Ratio, Percent	0.88%
AssetsNet	$ 1,800,523,467
Holdings Count | Holding	576
InvestmentCompanyPortfolioTurnover	36.75%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,800,523,467 Number of Portfolio Holdings 576 Portfolio Turnover Rate 36.75%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Corporate Bonds 44.7% Mortgage-Backed Securities 31.3% Asset-Backed Securities 8.4% U.S. Treasury Obligations 6.9% Repurchase Agreements 5.7% Foreign Government Securities 3.0% Collateralized Mortgage Obligations 2.4% Commercial Mortgage-Backed Securities 0.8% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 6.8% Oil, Gas & Consumable Fuels 6.7% Capital Markets 2.7% Electric Utilities 2.4% Consumer Finance 2.3% Diversified Telecommunication Services 1.8% Hotels, Restaurants & Leisure 1.5% Insurance 1.4% Aerospace & Defense 1.4% Chemicals 1.0% Other Industries Footnote Reference 72.0% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000112230
Shareholder Report [Line Items]
Fund Name	NVIT BNY Mellon Core Plus Bond Fund
Class Name	Class P
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BNY Mellon Core Plus Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B737">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P $36 0.73%
Expenses Paid, Amount	$ 36
Expense Ratio, Percent	0.73%
AssetsNet	$ 1,800,523,467
Holdings Count | Holding	576
InvestmentCompanyPortfolioTurnover	36.75%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,800,523,467 Number of Portfolio Holdings 576 Portfolio Turnover Rate 36.75%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Corporate Bonds 44.7% Mortgage-Backed Securities 31.3% Asset-Backed Securities 8.4% U.S. Treasury Obligations 6.9% Repurchase Agreements 5.7% Foreign Government Securities 3.0% Collateralized Mortgage Obligations 2.4% Commercial Mortgage-Backed Securities 0.8% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 6.8% Oil, Gas & Consumable Fuels 6.7% Capital Markets 2.7% Electric Utilities 2.4% Consumer Finance 2.3% Diversified Telecommunication Services 1.8% Hotels, Restaurants & Leisure 1.5% Insurance 1.4% Aerospace & Defense 1.4% Chemicals 1.0% Other Industries Footnote Reference 72.0% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059805
Shareholder Report [Line Items]
Fund Name	NVIT BNY Mellon Core Plus Bond Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BNY Mellon Core Plus Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B754">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $24 0.48%
Expenses Paid, Amount	$ 24
Expense Ratio, Percent	0.48%
AssetsNet	$ 1,800,523,467
Holdings Count | Holding	576
InvestmentCompanyPortfolioTurnover	36.75%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,800,523,467 Number of Portfolio Holdings 576 Portfolio Turnover Rate 36.75%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Corporate Bonds 44.7% Mortgage-Backed Securities 31.3% Asset-Backed Securities 8.4% U.S. Treasury Obligations 6.9% Repurchase Agreements 5.7% Foreign Government Securities 3.0% Collateralized Mortgage Obligations 2.4% Commercial Mortgage-Backed Securities 0.8% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 6.8% Oil, Gas & Consumable Fuels 6.7% Capital Markets 2.7% Electric Utilities 2.4% Consumer Finance 2.3% Diversified Telecommunication Services 1.8% Hotels, Restaurants & Leisure 1.5% Insurance 1.4% Aerospace & Defense 1.4% Chemicals 1.0% Other Industries Footnote Reference 72.0% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000074474
Shareholder Report [Line Items]
Fund Name	NVIT BNY Mellon Dynamic U.S. Core Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BNY Mellon Dynamic U.S. Core Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B771">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $33 0.61%
Expenses Paid, Amount	$ 33
Expense Ratio, Percent	0.61%
AssetsNet	$ 2,379,635,426
Holdings Count | Holding	513
InvestmentCompanyPortfolioTurnover	1.86%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $2,379,635,426 Number of Portfolio Holdings 513 Portfolio Turnover Rate 1.86%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 88.5% Short-Term Investment 7.2% Repurchase Agreements 3.5% Other assets in excess of liabilities 0.8% Top Industries Footnote Reference Semiconductors & Semiconductor Equipment 10.7% Software 9.8% Technology Hardware, Storage & Peripherals 6.2% Interactive Media & Services 6.0% Broadline Retail 3.5% Financial Services 3.4% Pharmaceuticals 3.4% Oil, Gas & Consumable Fuels 3.0% Banks 2.9% Capital Markets 2.5% Other Industries Footnote Reference 48.6% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000074472
Shareholder Report [Line Items]
Fund Name	NVIT BNY Mellon Dynamic U.S. Core Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BNY Mellon Dynamic U.S. Core Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B788">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $46 0.86%
Expenses Paid, Amount	$ 46
Expense Ratio, Percent	0.86%
AssetsNet	$ 2,379,635,426
Holdings Count | Holding	513
InvestmentCompanyPortfolioTurnover	1.86%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $2,379,635,426 Number of Portfolio Holdings 513 Portfolio Turnover Rate 1.86%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 88.5% Short-Term Investment 7.2% Repurchase Agreements 3.5% Other assets in excess of liabilities 0.8% Top Industries Footnote Reference Semiconductors & Semiconductor Equipment 10.7% Software 9.8% Technology Hardware, Storage & Peripherals 6.2% Interactive Media & Services 6.0% Broadline Retail 3.5% Financial Services 3.4% Pharmaceuticals 3.4% Oil, Gas & Consumable Fuels 3.0% Banks 2.9% Capital Markets 2.5% Other Industries Footnote Reference 48.6% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000074469
Shareholder Report [Line Items]
Fund Name	NVIT BNY Mellon Dynamic U.S. Equity Income Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BNY Mellon Dynamic U.S. Equity Income Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B805">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $45 0.88%
Expenses Paid, Amount	$ 45
Expense Ratio, Percent	0.88%
AssetsNet	$ 527,127,902
Holdings Count | Holding	79
InvestmentCompanyPortfolioTurnover	37.77%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $527,127,902 Number of Portfolio Holdings 79 Portfolio Turnover Rate 37.77%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 89.0% Repurchase Agreements 8.9% Short-Term Investment 4.4% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 9.8% Oil, Gas & Consumable Fuels 8.5% Insurance 7.9% Health Care Equipment & Supplies 6.5% Financial Services 3.8% Capital Markets 3.7% Aerospace & Defense 3.7% Pharmaceuticals 3.2% Diversified Telecommunication Services 3.2% Metals & Mining 3.1% Other Industries Footnote Reference 46.6% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000074470
Shareholder Report [Line Items]
Fund Name	NVIT BNY Mellon Dynamic U.S. Equity Income Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BNY Mellon Dynamic U.S. Equity Income Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B822">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $54 1.05%
Expenses Paid, Amount	$ 54
Expense Ratio, Percent	1.05%
AssetsNet	$ 527,127,902
Holdings Count | Holding	79
InvestmentCompanyPortfolioTurnover	37.77%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $527,127,902 Number of Portfolio Holdings 79 Portfolio Turnover Rate 37.77%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 89.0% Repurchase Agreements 8.9% Short-Term Investment 4.4% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 9.8% Oil, Gas & Consumable Fuels 8.5% Insurance 7.9% Health Care Equipment & Supplies 6.5% Financial Services 3.8% Capital Markets 3.7% Aerospace & Defense 3.7% Pharmaceuticals 3.2% Diversified Telecommunication Services 3.2% Metals & Mining 3.1% Other Industries Footnote Reference 46.6% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000220662
Shareholder Report [Line Items]
Fund Name	NVIT BNY Mellon Dynamic U.S. Equity Income Fund
Class Name	Class X
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BNY Mellon Dynamic U.S. Equity Income Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B839">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class X $39 0.75%
Expenses Paid, Amount	$ 39
Expense Ratio, Percent	0.75%
AssetsNet	$ 527,127,902
Holdings Count | Holding	79
InvestmentCompanyPortfolioTurnover	37.77%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $527,127,902 Number of Portfolio Holdings 79 Portfolio Turnover Rate 37.77%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 89.0% Repurchase Agreements 8.9% Short-Term Investment 4.4% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 9.8% Oil, Gas & Consumable Fuels 8.5% Insurance 7.9% Health Care Equipment & Supplies 6.5% Financial Services 3.8% Capital Markets 3.7% Aerospace & Defense 3.7% Pharmaceuticals 3.2% Diversified Telecommunication Services 3.2% Metals & Mining 3.1% Other Industries Footnote Reference 46.6% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000220661
Shareholder Report [Line Items]
Fund Name	NVIT BNY Mellon Dynamic U.S. Equity Income Fund
Class Name	Class Z
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT BNY Mellon Dynamic U.S. Equity Income Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B856">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Z $52 1.00%
Expenses Paid, Amount	$ 52
Expense Ratio, Percent	1%
AssetsNet	$ 527,127,902
Holdings Count | Holding	79
InvestmentCompanyPortfolioTurnover	37.77%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $527,127,902 Number of Portfolio Holdings 79 Portfolio Turnover Rate 37.77%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 89.0% Repurchase Agreements 8.9% Short-Term Investment 4.4% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 9.8% Oil, Gas & Consumable Fuels 8.5% Insurance 7.9% Health Care Equipment & Supplies 6.5% Financial Services 3.8% Capital Markets 3.7% Aerospace & Defense 3.7% Pharmaceuticals 3.2% Diversified Telecommunication Services 3.2% Metals & Mining 3.1% Other Industries Footnote Reference 46.6% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000139944
Shareholder Report [Line Items]
Fund Name	NVIT Bond Index Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Bond Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B873">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $19 0.39%
Expenses Paid, Amount	$ 19
Expense Ratio, Percent	0.39%
AssetsNet	$ 2,147,265,781
Holdings Count | Holding	5,446
InvestmentCompanyPortfolioTurnover	34.16%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $2,147,265,781 Number of Portfolio Holdings 5,446 Portfolio Turnover Rate 34.16%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value U.S. Treasury Obligations 42.7% Mortgage-Backed Securities 25.4% Corporate Bonds 24.8% Repurchase Agreements 5.5% Commercial Mortgage-Backed Securities 1.7% Foreign Government Securities 1.5% Supranational 1.2% Municipal Bonds 0.6% U.S. Government Agency Securities 0.6% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 4.4% Oil, Gas & Consumable Fuels 1.5% Capital Markets 1.5% Electric Utilities 1.5% Health Care Providers & Services 1.0% Pharmaceuticals 0.9% Consumer Finance 0.8% Diversified Telecommunication Services 0.7% Semiconductors & Semiconductor Equipment 0.6% Insurance 0.6% Other Industries Footnote Reference 86.5% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000033502
Shareholder Report [Line Items]
Fund Name	NVIT Bond Index Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Bond Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B890">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $12 0.24%
Expenses Paid, Amount	$ 12
Expense Ratio, Percent	0.24%
AssetsNet	$ 2,147,265,781
Holdings Count | Holding	5,446
InvestmentCompanyPortfolioTurnover	34.16%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $2,147,265,781 Number of Portfolio Holdings 5,446 Portfolio Turnover Rate 34.16%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value U.S. Treasury Obligations 42.7% Mortgage-Backed Securities 25.4% Corporate Bonds 24.8% Repurchase Agreements 5.5% Commercial Mortgage-Backed Securities 1.7% Foreign Government Securities 1.5% Supranational 1.2% Municipal Bonds 0.6% U.S. Government Agency Securities 0.6% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 4.4% Oil, Gas & Consumable Fuels 1.5% Capital Markets 1.5% Electric Utilities 1.5% Health Care Providers & Services 1.0% Pharmaceuticals 0.9% Consumer Finance 0.8% Diversified Telecommunication Services 0.7% Semiconductors & Semiconductor Equipment 0.6% Insurance 0.6% Other Industries Footnote Reference 86.5% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059800
Shareholder Report [Line Items]
Fund Name	NVIT Calvert Equity Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Calvert Equity Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B907">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $40 0.78%
Expenses Paid, Amount	$ 40
Expense Ratio, Percent	0.78%
AssetsNet	$ 103,513,223
Holdings Count | Holding	45
InvestmentCompanyPortfolioTurnover	3.98%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $103,513,223 Number of Portfolio Holdings 45 Portfolio Turnover Rate 3.98%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 96.5% Other assets in excess of liabilities 3.5% Top Industries Footnote Reference Financial Services 12.1% Life Sciences Tools & Services 11.0% Software 10.6% Capital Markets 8.9% Chemicals 7.5% IT Services 6.3% Interactive Media & Services 5.1% Specialty Retail 5.0% Electronic Equipment, Instruments & Components 4.4% Machinery 4.4% Other Industries 24.7% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059801
Shareholder Report [Line Items]
Fund Name	NVIT Calvert Equity Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Calvert Equity Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B924">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $44 0.87%
Expenses Paid, Amount	$ 44
Expense Ratio, Percent	0.87%
AssetsNet	$ 103,513,223
Holdings Count | Holding	45
InvestmentCompanyPortfolioTurnover	3.98%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $103,513,223 Number of Portfolio Holdings 45 Portfolio Turnover Rate 3.98%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 96.5% Other assets in excess of liabilities 3.5% Top Industries Footnote Reference Financial Services 12.1% Life Sciences Tools & Services 11.0% Software 10.6% Capital Markets 8.9% Chemicals 7.5% IT Services 6.3% Interactive Media & Services 5.1% Specialty Retail 5.0% Electronic Equipment, Instruments & Components 4.4% Machinery 4.4% Other Industries 24.7% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000074475
Shareholder Report [Line Items]
Fund Name	NVIT Columbia Overseas Value Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Columbia Overseas Value Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B941">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $50 0.99%
Expenses Paid, Amount	$ 50
Expense Ratio, Percent	0.99%
AssetsNet	$ 229,207,889
Holdings Count | Holding	101
InvestmentCompanyPortfolioTurnover	24.77%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $229,207,889 Number of Portfolio Holdings 101 Portfolio Turnover Rate 24.77%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.4% Repurchase Agreements 5.3% Other liabilities in excess of assets - Top Countries Footnote Reference Japan 23.9% United States 12.9% France 12.2% United Kingdom 10.9% Netherlands 6.3% Germany 4.1% Canada 4.0% Israel 3.3% Spain 2.4% Ireland 2.2% Other Countries Footnote Reference 17.8% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000220664
Shareholder Report [Line Items]
Fund Name	NVIT Columbia Overseas Value Fund
Class Name	Class X
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Columbia Overseas Value Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B958">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class X $43 0.85%
Expenses Paid, Amount	$ 43
Expense Ratio, Percent	0.85%
AssetsNet	$ 229,207,889
Holdings Count | Holding	101
InvestmentCompanyPortfolioTurnover	24.77%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $229,207,889 Number of Portfolio Holdings 101 Portfolio Turnover Rate 24.77%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.4% Repurchase Agreements 5.3% Other liabilities in excess of assets - Top Countries Footnote Reference Japan 23.9% United States 12.9% France 12.2% United Kingdom 10.9% Netherlands 6.3% Germany 4.1% Canada 4.0% Israel 3.3% Spain 2.4% Ireland 2.2% Other Countries Footnote Reference 17.8% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000220663
Shareholder Report [Line Items]
Fund Name	NVIT Columbia Overseas Value Fund
Class Name	Class Z
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Columbia Overseas Value Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B975">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Z $56 1.10%
Expenses Paid, Amount	$ 56
Expense Ratio, Percent	1.10%
AssetsNet	$ 229,207,889
Holdings Count | Holding	101
InvestmentCompanyPortfolioTurnover	24.77%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $229,207,889 Number of Portfolio Holdings 101 Portfolio Turnover Rate 24.77%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.4% Repurchase Agreements 5.3% Other liabilities in excess of assets - Top Countries Footnote Reference Japan 23.9% United States 12.9% France 12.2% United Kingdom 10.9% Netherlands 6.3% Germany 4.1% Canada 4.0% Israel 3.3% Spain 2.4% Ireland 2.2% Other Countries Footnote Reference 17.8% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059797
Shareholder Report [Line Items]
Fund Name	NVIT Core Bond Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Core Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B992">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $29 0.59%
Expenses Paid, Amount	$ 29
Expense Ratio, Percent	0.59%
AssetsNet	$ 1,704,986,178
Holdings Count | Holding	387
InvestmentCompanyPortfolioTurnover	13.30%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,704,986,178 Number of Portfolio Holdings 387 Portfolio Turnover Rate 13.30%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Corporate Bonds 34.8% Mortgage-Backed Securities 26.4% U.S. Treasury Obligations 25.2% Asset-Backed Securities 8.8% Repurchase Agreements 2.8% U.S. Government Agency Securities 1.6% Collateralized Mortgage Obligations 1.3% Commercial Mortgage-Backed Securities 1.1% Municipal Bonds 0.8% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 5.9% Electric Utilities 5.2% Oil, Gas & Consumable Fuels 3.3% Capital Markets 2.8% Insurance 1.5% Health Care Providers & Services 0.9% Food Products 0.9% Aerospace & Defense 0.8% Ground Transportation 0.7% Tobacco 0.6% Other Industries Footnote Reference 77.4% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059798
Shareholder Report [Line Items]
Fund Name	NVIT Core Bond Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Core Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1009">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $42 0.84%
Expenses Paid, Amount	$ 42
Expense Ratio, Percent	0.84%
AssetsNet	$ 1,704,986,178
Holdings Count | Holding	387
InvestmentCompanyPortfolioTurnover	13.30%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,704,986,178 Number of Portfolio Holdings 387 Portfolio Turnover Rate 13.30%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Corporate Bonds 34.8% Mortgage-Backed Securities 26.4% U.S. Treasury Obligations 25.2% Asset-Backed Securities 8.8% Repurchase Agreements 2.8% U.S. Government Agency Securities 1.6% Collateralized Mortgage Obligations 1.3% Commercial Mortgage-Backed Securities 1.1% Municipal Bonds 0.8% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 5.9% Electric Utilities 5.2% Oil, Gas & Consumable Fuels 3.3% Capital Markets 2.8% Insurance 1.5% Health Care Providers & Services 0.9% Food Products 0.9% Aerospace & Defense 0.8% Ground Transportation 0.7% Tobacco 0.6% Other Industries Footnote Reference 77.4% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059799
Shareholder Report [Line Items]
Fund Name	NVIT Core Bond Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Core Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1026">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $22 0.44%
Expenses Paid, Amount	$ 22
Expense Ratio, Percent	0.44%
AssetsNet	$ 1,704,986,178
Holdings Count | Holding	387
InvestmentCompanyPortfolioTurnover	13.30%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,704,986,178 Number of Portfolio Holdings 387 Portfolio Turnover Rate 13.30%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Corporate Bonds 34.8% Mortgage-Backed Securities 26.4% U.S. Treasury Obligations 25.2% Asset-Backed Securities 8.8% Repurchase Agreements 2.8% U.S. Government Agency Securities 1.6% Collateralized Mortgage Obligations 1.3% Commercial Mortgage-Backed Securities 1.1% Municipal Bonds 0.8% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 5.9% Electric Utilities 5.2% Oil, Gas & Consumable Fuels 3.3% Capital Markets 2.8% Insurance 1.5% Health Care Providers & Services 0.9% Food Products 0.9% Aerospace & Defense 0.8% Ground Transportation 0.7% Tobacco 0.6% Other Industries Footnote Reference 77.4% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000192909
Shareholder Report [Line Items]
Fund Name	NVIT DoubleLine Total Return Tactical Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT DoubleLine Total Return Tactical Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1043">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $27 0.55%
Expenses Paid, Amount	$ 27
Expense Ratio, Percent	0.55%
AssetsNet	$ 192,964,712
Holdings Count | Holding	547
InvestmentCompanyPortfolioTurnover	53.62%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $192,964,712 Number of Portfolio Holdings 547 Portfolio Turnover Rate 53.62%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value U.S. Treasury Obligations 22.1% Mortgage-Backed Securities 19.1% Collateralized Mortgage Obligations 19.1% Asset-Backed Securities 16.2% Corporate Bonds 12.4% Commercial Mortgage-Backed Securities 5.7% Investment Company 1.9% Other assets in excess of liabilities 3.5% Top Industries Footnote Reference Banks 1.4% Electric Utilities 1.2% Oil, Gas & Consumable Fuels 1.2% Hotels, Restaurants & Leisure 0.8% Health Care Providers & Services 0.6% Other Industries 94.8% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000192910
Shareholder Report [Line Items]
Fund Name	NVIT DoubleLine Total Return Tactical Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT DoubleLine Total Return Tactical Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1060">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $49 0.98%
Expenses Paid, Amount	$ 49
Expense Ratio, Percent	0.98%
AssetsNet	$ 192,964,712
Holdings Count | Holding	547
InvestmentCompanyPortfolioTurnover	53.62%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $192,964,712 Number of Portfolio Holdings 547 Portfolio Turnover Rate 53.62%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value U.S. Treasury Obligations 22.1% Mortgage-Backed Securities 19.1% Collateralized Mortgage Obligations 19.1% Asset-Backed Securities 16.2% Corporate Bonds 12.4% Commercial Mortgage-Backed Securities 5.7% Investment Company 1.9% Other assets in excess of liabilities 3.5% Top Industries Footnote Reference Banks 1.4% Electric Utilities 1.2% Oil, Gas & Consumable Fuels 1.2% Hotels, Restaurants & Leisure 0.8% Health Care Providers & Services 0.6% Other Industries 94.8% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000192911
Shareholder Report [Line Items]
Fund Name	NVIT DoubleLine Total Return Tactical Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT DoubleLine Total Return Tactical Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1077">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $29 0.58%
Expenses Paid, Amount	$ 29
Expense Ratio, Percent	0.58%
AssetsNet	$ 192,964,712
Holdings Count | Holding	547
InvestmentCompanyPortfolioTurnover	53.62%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $192,964,712 Number of Portfolio Holdings 547 Portfolio Turnover Rate 53.62%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value U.S. Treasury Obligations 22.1% Mortgage-Backed Securities 19.1% Collateralized Mortgage Obligations 19.1% Asset-Backed Securities 16.2% Corporate Bonds 12.4% Commercial Mortgage-Backed Securities 5.7% Investment Company 1.9% Other assets in excess of liabilities 3.5% Top Industries Footnote Reference Banks 1.4% Electric Utilities 1.2% Oil, Gas & Consumable Fuels 1.2% Hotels, Restaurants & Leisure 0.8% Health Care Providers & Services 0.6% Other Industries 94.8% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000168057
Shareholder Report [Line Items]
Fund Name	NVIT Emerging Markets Fund
Class Name	Class D
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Emerging Markets Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1094">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class D $77 1.48%
Expenses Paid, Amount	$ 77
Expense Ratio, Percent	1.48%
AssetsNet	$ 154,929,878
Holdings Count | Holding	75
InvestmentCompanyPortfolioTurnover	28.02%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $154,929,878 Number of Portfolio Holdings 75 Portfolio Turnover Rate 28.02%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 100.0% Other liabilities in excess of assets 0.0% Top Countries Footnote Reference China 22.7% India 20.6% Taiwan 20.3% South Korea 15.4% Hong Kong 3.9% Thailand 3.1% Indonesia 2.5% Brazil 2.3% Poland 2.1% Greece 1.8% Other Countries 5.3% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014756
Shareholder Report [Line Items]
Fund Name	NVIT Emerging Markets Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Emerging Markets Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1111">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $62 1.20%
Expenses Paid, Amount	$ 62
Expense Ratio, Percent	1.20%
AssetsNet	$ 154,929,878
Holdings Count | Holding	75
InvestmentCompanyPortfolioTurnover	28.02%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $154,929,878 Number of Portfolio Holdings 75 Portfolio Turnover Rate 28.02%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 100.0% Other liabilities in excess of assets 0.0% Top Countries Footnote Reference China 22.7% India 20.6% Taiwan 20.3% South Korea 15.4% Hong Kong 3.9% Thailand 3.1% Indonesia 2.5% Brazil 2.3% Poland 2.1% Greece 1.8% Other Countries 5.3% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014757
Shareholder Report [Line Items]
Fund Name	NVIT Emerging Markets Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Emerging Markets Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1128">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $75 1.44%
Expenses Paid, Amount	$ 75
Expense Ratio, Percent	1.44%
AssetsNet	$ 154,929,878
Holdings Count | Holding	75
InvestmentCompanyPortfolioTurnover	28.02%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $154,929,878 Number of Portfolio Holdings 75 Portfolio Turnover Rate 28.02%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 100.0% Other liabilities in excess of assets 0.0% Top Countries Footnote Reference China 22.7% India 20.6% Taiwan 20.3% South Korea 15.4% Hong Kong 3.9% Thailand 3.1% Indonesia 2.5% Brazil 2.3% Poland 2.1% Greece 1.8% Other Countries 5.3% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000075321
Shareholder Report [Line Items]
Fund Name	NVIT Emerging Markets Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Emerging Markets Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1145">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $54 1.04%
Expenses Paid, Amount	$ 54
Expense Ratio, Percent	1.04%
AssetsNet	$ 154,929,878
Holdings Count | Holding	75
InvestmentCompanyPortfolioTurnover	28.02%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $154,929,878 Number of Portfolio Holdings 75 Portfolio Turnover Rate 28.02%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 100.0% Other liabilities in excess of assets 0.0% Top Countries Footnote Reference China 22.7% India 20.6% Taiwan 20.3% South Korea 15.4% Hong Kong 3.9% Thailand 3.1% Indonesia 2.5% Brazil 2.3% Poland 2.1% Greece 1.8% Other Countries 5.3% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014749
Shareholder Report [Line Items]
Fund Name	NVIT Federated High Income Bond Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Federated High Income Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1162">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $46 0.91%
Expenses Paid, Amount	$ 46
Expense Ratio, Percent	0.91%
AssetsNet	$ 95,814,441
Holdings Count | Holding	424
InvestmentCompanyPortfolioTurnover	14.83%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $95,814,441 Number of Portfolio Holdings 424 Portfolio Turnover Rate 14.83%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Corporate Bonds 95.6% Other assets in excess of liabilities 4.4% Top Industries Footnote Reference Technology 11.6% Insurance - P&C 8.7% Automotive 6.6% Cable Satellite 6.6% Midstream 6.1% Gaming 5.3% Packaging 5.1% Healthcare 4.8% Consumer Cyclical Services 4.2% Building Materials 4.1% Other Industries 36.9% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014696
Shareholder Report [Line Items]
Fund Name	NVIT Government Bond Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Government Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1179">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $35 0.71%
Expenses Paid, Amount	$ 35
Expense Ratio, Percent	0.71%
AssetsNet	$ 307,286,857
Holdings Count | Holding	129
InvestmentCompanyPortfolioTurnover	33.40%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $307,286,857 Number of Portfolio Holdings 129 Portfolio Turnover Rate 33.40%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Mortgage-Backed Security 49.1% U.S. Government Agency Security 16.3% U.S. Treasury Obligation 13.0% Collateralized Mortgage Obligation 7.8% Asset-Backed Security 6.3% Corporate Bond 5.0% Commercial Mortgage-Backed Security 3.1% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference FFCB, 3.14%, 7/2/2026 4.2% FFCB, 2.38%, 3/16/2032 4.2% U.S. Treasury Bonds, 2.25%, 8/15/2046 3.9% Resolution Funding Corp., 1/15/2030 3.8% FNMA UMBS, 2.00%, 4/1/2052 3.2% Private Export Funding Corp., 1.75%, 11/15/2024 3.2% FNMA, 2.50%, 9/25/2042 2.5% FNMA UMBS, 3.00%, 12/1/2047 2.3% FHLMC Multifamily Structured Pass-Through Certificates, 4.20%, 5/25/2033 2.2% State of Israel AID Bond, 5.50%, 9/18/2033 2.1% Other Holdings 68.4% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014697
Shareholder Report [Line Items]
Fund Name	NVIT Government Bond Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Government Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1196">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $47 0.96%
Expenses Paid, Amount	$ 47
Expense Ratio, Percent	0.96%
AssetsNet	$ 307,286,857
Holdings Count | Holding	129
InvestmentCompanyPortfolioTurnover	33.40%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $307,286,857 Number of Portfolio Holdings 129 Portfolio Turnover Rate 33.40%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Mortgage-Backed Security 49.1% U.S. Government Agency Security 16.3% U.S. Treasury Obligation 13.0% Collateralized Mortgage Obligation 7.8% Asset-Backed Security 6.3% Corporate Bond 5.0% Commercial Mortgage-Backed Security 3.1% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference FFCB, 3.14%, 7/2/2026 4.2% FFCB, 2.38%, 3/16/2032 4.2% U.S. Treasury Bonds, 2.25%, 8/15/2046 3.9% Resolution Funding Corp., 1/15/2030 3.8% FNMA UMBS, 2.00%, 4/1/2052 3.2% Private Export Funding Corp., 1.75%, 11/15/2024 3.2% FNMA, 2.50%, 9/25/2042 2.5% FNMA UMBS, 3.00%, 12/1/2047 2.3% FHLMC Multifamily Structured Pass-Through Certificates, 4.20%, 5/25/2033 2.2% State of Israel AID Bond, 5.50%, 9/18/2033 2.1% Other Holdings 68.4% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014699
Shareholder Report [Line Items]
Fund Name	NVIT Government Bond Fund
Class Name	Class IV
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Government Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1213">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class IV $35 0.71%
Expenses Paid, Amount	$ 35
Expense Ratio, Percent	0.71%
AssetsNet	$ 307,286,857
Holdings Count | Holding	129
InvestmentCompanyPortfolioTurnover	33.40%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $307,286,857 Number of Portfolio Holdings 129 Portfolio Turnover Rate 33.40%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Mortgage-Backed Security 49.1% U.S. Government Agency Security 16.3% U.S. Treasury Obligation 13.0% Collateralized Mortgage Obligation 7.8% Asset-Backed Security 6.3% Corporate Bond 5.0% Commercial Mortgage-Backed Security 3.1% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference FFCB, 3.14%, 7/2/2026 4.2% FFCB, 2.38%, 3/16/2032 4.2% U.S. Treasury Bonds, 2.25%, 8/15/2046 3.9% Resolution Funding Corp., 1/15/2030 3.8% FNMA UMBS, 2.00%, 4/1/2052 3.2% Private Export Funding Corp., 1.75%, 11/15/2024 3.2% FNMA, 2.50%, 9/25/2042 2.5% FNMA UMBS, 3.00%, 12/1/2047 2.3% FHLMC Multifamily Structured Pass-Through Certificates, 4.20%, 5/25/2033 2.2% State of Israel AID Bond, 5.50%, 9/18/2033 2.1% Other Holdings 68.4% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000139942
Shareholder Report [Line Items]
Fund Name	NVIT Government Bond Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Government Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1230">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $28 0.56%
Expenses Paid, Amount	$ 28
Expense Ratio, Percent	0.56%
AssetsNet	$ 307,286,857
Holdings Count | Holding	129
InvestmentCompanyPortfolioTurnover	33.40%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $307,286,857 Number of Portfolio Holdings 129 Portfolio Turnover Rate 33.40%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Mortgage-Backed Security 49.1% U.S. Government Agency Security 16.3% U.S. Treasury Obligation 13.0% Collateralized Mortgage Obligation 7.8% Asset-Backed Security 6.3% Corporate Bond 5.0% Commercial Mortgage-Backed Security 3.1% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference FFCB, 3.14%, 7/2/2026 4.2% FFCB, 2.38%, 3/16/2032 4.2% U.S. Treasury Bonds, 2.25%, 8/15/2046 3.9% Resolution Funding Corp., 1/15/2030 3.8% FNMA UMBS, 2.00%, 4/1/2052 3.2% Private Export Funding Corp., 1.75%, 11/15/2024 3.2% FNMA, 2.50%, 9/25/2042 2.5% FNMA UMBS, 3.00%, 12/1/2047 2.3% FHLMC Multifamily Structured Pass-Through Certificates, 4.20%, 5/25/2033 2.2% State of Israel AID Bond, 5.50%, 9/18/2033 2.1% Other Holdings 68.4% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014718
Shareholder Report [Line Items]
Fund Name	NVIT Government Money Market Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Government Money Market Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1247">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $22 0.44%
Expenses Paid, Amount	$ 22
Expense Ratio, Percent	0.44%
AssetsNet	$ 3,016,357,834
Holdings Count | Holding	81
InvestmentCompanyPortfolioTurnover	22.08%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $3,016,357,834 Number of Portfolio Holdings 81 Portfolio Turnover Rate 22.08%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Repurchase Agreements 42.5% U.S. Treasury Obligations 37.8% U.S. Government Agency Securities 21.4% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference U.S. Treasury Bills, 5.18%, 7/5/2024 2.5% U.S. Treasury Notes, 5.46%, 4/30/2026 2.3% FHLB, 5.32%, 9/27/2024 2.0% U.S. Treasury Bills, 5.32%, 9/5/2024 1.5% U.S. Treasury Bills, 5.24%, 8/15/2024 1.5% U.S. Treasury Bills, 5.25%, 8/1/2024 1.4% U.S. Treasury Bills, 5.30%, 8/29/2024 1.3% FHLB, 5.35%, 10/8/2024 1.3% U.S. Treasury Notes, 5.34%, 7/31/2024 1.3% U.S. Treasury Notes, 5.48%, 10/31/2025 1.3% Other Holdings Footnote Reference 83.6% Footnote Description Footnote # For purposes of listing top holdings, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000079439
Shareholder Report [Line Items]
Fund Name	NVIT Government Money Market Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Government Money Market Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1264">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $35 0.69%
Expenses Paid, Amount	$ 35
Expense Ratio, Percent	0.69%
AssetsNet	$ 3,016,357,834
Holdings Count | Holding	81
InvestmentCompanyPortfolioTurnover	22.08%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $3,016,357,834 Number of Portfolio Holdings 81 Portfolio Turnover Rate 22.08%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Repurchase Agreements 42.5% U.S. Treasury Obligations 37.8% U.S. Government Agency Securities 21.4% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference U.S. Treasury Bills, 5.18%, 7/5/2024 2.5% U.S. Treasury Notes, 5.46%, 4/30/2026 2.3% FHLB, 5.32%, 9/27/2024 2.0% U.S. Treasury Bills, 5.32%, 9/5/2024 1.5% U.S. Treasury Bills, 5.24%, 8/15/2024 1.5% U.S. Treasury Bills, 5.25%, 8/1/2024 1.4% U.S. Treasury Bills, 5.30%, 8/29/2024 1.3% FHLB, 5.35%, 10/8/2024 1.3% U.S. Treasury Notes, 5.34%, 7/31/2024 1.3% U.S. Treasury Notes, 5.48%, 10/31/2025 1.3% Other Holdings Footnote Reference 83.6% Footnote Description Footnote # For purposes of listing top holdings, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014719
Shareholder Report [Line Items]
Fund Name	NVIT Government Money Market Fund
Class Name	Class IV
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Government Money Market Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1281">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class IV $22 0.44%
Expenses Paid, Amount	$ 22
Expense Ratio, Percent	0.44%
AssetsNet	$ 3,016,357,834
Holdings Count | Holding	81
InvestmentCompanyPortfolioTurnover	22.08%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $3,016,357,834 Number of Portfolio Holdings 81 Portfolio Turnover Rate 22.08%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Repurchase Agreements 42.5% U.S. Treasury Obligations 37.8% U.S. Government Agency Securities 21.4% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference U.S. Treasury Bills, 5.18%, 7/5/2024 2.5% U.S. Treasury Notes, 5.46%, 4/30/2026 2.3% FHLB, 5.32%, 9/27/2024 2.0% U.S. Treasury Bills, 5.32%, 9/5/2024 1.5% U.S. Treasury Bills, 5.24%, 8/15/2024 1.5% U.S. Treasury Bills, 5.25%, 8/1/2024 1.4% U.S. Treasury Bills, 5.30%, 8/29/2024 1.3% FHLB, 5.35%, 10/8/2024 1.3% U.S. Treasury Notes, 5.34%, 7/31/2024 1.3% U.S. Treasury Notes, 5.48%, 10/31/2025 1.3% Other Holdings Footnote Reference 83.6% Footnote Description Footnote # For purposes of listing top holdings, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014720
Shareholder Report [Line Items]
Fund Name	NVIT Government Money Market Fund
Class Name	Class V
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Government Money Market Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1298">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class V $20 0.39%
Expenses Paid, Amount	$ 20
Expense Ratio, Percent	0.39%
AssetsNet	$ 3,016,357,834
Holdings Count | Holding	81
InvestmentCompanyPortfolioTurnover	22.08%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $3,016,357,834 Number of Portfolio Holdings 81 Portfolio Turnover Rate 22.08%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Repurchase Agreements 42.5% U.S. Treasury Obligations 37.8% U.S. Government Agency Securities 21.4% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference U.S. Treasury Bills, 5.18%, 7/5/2024 2.5% U.S. Treasury Notes, 5.46%, 4/30/2026 2.3% FHLB, 5.32%, 9/27/2024 2.0% U.S. Treasury Bills, 5.32%, 9/5/2024 1.5% U.S. Treasury Bills, 5.24%, 8/15/2024 1.5% U.S. Treasury Bills, 5.25%, 8/1/2024 1.4% U.S. Treasury Bills, 5.30%, 8/29/2024 1.3% FHLB, 5.35%, 10/8/2024 1.3% U.S. Treasury Notes, 5.34%, 7/31/2024 1.3% U.S. Treasury Notes, 5.48%, 10/31/2025 1.3% Other Holdings Footnote Reference 83.6% Footnote Description Footnote # For purposes of listing top holdings, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000204950
Shareholder Report [Line Items]
Fund Name	NVIT Government Money Market Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Government Money Market Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1315">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $15 0.29%
Expenses Paid, Amount	$ 15
Expense Ratio, Percent	0.29%
AssetsNet	$ 3,016,357,834
Holdings Count | Holding	81
InvestmentCompanyPortfolioTurnover	22.08%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $3,016,357,834 Number of Portfolio Holdings 81 Portfolio Turnover Rate 22.08%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Repurchase Agreements 42.5% U.S. Treasury Obligations 37.8% U.S. Government Agency Securities 21.4% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference U.S. Treasury Bills, 5.18%, 7/5/2024 2.5% U.S. Treasury Notes, 5.46%, 4/30/2026 2.3% FHLB, 5.32%, 9/27/2024 2.0% U.S. Treasury Bills, 5.32%, 9/5/2024 1.5% U.S. Treasury Bills, 5.24%, 8/15/2024 1.5% U.S. Treasury Bills, 5.25%, 8/1/2024 1.4% U.S. Treasury Bills, 5.30%, 8/29/2024 1.3% FHLB, 5.35%, 10/8/2024 1.3% U.S. Treasury Notes, 5.34%, 7/31/2024 1.3% U.S. Treasury Notes, 5.48%, 10/31/2025 1.3% Other Holdings Footnote Reference 83.6% Footnote Description Footnote # For purposes of listing top holdings, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000214896
Shareholder Report [Line Items]
Fund Name	NVIT GS Emerging Markets Equity Insights Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT GS Emerging Markets Equity Insights Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1332">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $52 0.98%
Expenses Paid, Amount	$ 52
Expense Ratio, Percent	0.98%
AssetsNet	$ 777,910,980
Holdings Count | Holding	386
InvestmentCompanyPortfolioTurnover	74.40%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $777,910,980 Number of Portfolio Holdings 386 Portfolio Turnover Rate 74.40%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.5% Repurchase Agreements 0.6% Other liabilities in excess of assets - Top Countries Footnote Reference China 25.5% Taiwan 19.9% India 18.6% South Korea 12.8% Brazil 4.7% Saudi Arabia 3.6% South Africa 2.6% Mexico 2.4% Indonesia 1.9% Thailand 1.7% Other Countries Footnote Reference 6.3% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000214897
Shareholder Report [Line Items]
Fund Name	NVIT GS International Equity Insights Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT GS International Equity Insights Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1349">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $41 0.79%
Expenses Paid, Amount	$ 41
Expense Ratio, Percent	0.79%
AssetsNet	$ 718,648,591
Holdings Count | Holding	332
InvestmentCompanyPortfolioTurnover	73.47%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $718,648,591 Number of Portfolio Holdings 332 Portfolio Turnover Rate 73.47%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.2% Repurchase Agreements 0.8% Other assets in excess of liabilities 1.0% Top Countries Footnote Reference Japan 23.5% United States 10.3% Germany 9.7% Australia 8.4% United Kingdom 7.6% France 7.1% Netherlands 6.9% Switzerland 6.3% Denmark 5.3% Sweden 4.2% Other Countries Footnote Reference 10.7% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000214898
Shareholder Report [Line Items]
Fund Name	NVIT GS Large Cap Equity Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT GS Large Cap Equity Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1366">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $31 0.58%
Expenses Paid, Amount	$ 31
Expense Ratio, Percent	0.58%
AssetsNet	$ 2,176,188,157
Holdings Count | Holding	254
InvestmentCompanyPortfolioTurnover	60.22%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $2,176,188,157 Number of Portfolio Holdings 254 Portfolio Turnover Rate 60.22%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.6% Repurchase Agreements 2.2% Other liabilities in excess of assets - Top Industries Footnote Reference Software 10.2% Semiconductors & Semiconductor Equipment 9.9% Interactive Media & Services 6.9% Technology Hardware, Storage & Peripherals 6.8% Financial Services 4.5% Broadline Retail 3.4% Machinery 3.3% Banks 3.1% Biotechnology 3.1% Oil, Gas & Consumable Fuels 3.0% Other Industries Footnote Reference 45.8% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000214899
Shareholder Report [Line Items]
Fund Name	NVIT GS Small Cap Equity Insights Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT GS Small Cap Equity Insights Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1383">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $39 0.77%
Expenses Paid, Amount	$ 39
Expense Ratio, Percent	0.77%
AssetsNet	$ 234,641,443
Holdings Count | Holding	562
InvestmentCompanyPortfolioTurnover	83.45%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $234,641,443 Number of Portfolio Holdings 562 Portfolio Turnover Rate 83.45%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.3% Repurchase Agreements 15.7% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 8.0% Biotechnology 7.3% Software 6.0% Machinery 3.5% Health Care Providers & Services 3.5% Hotels, Restaurants & Leisure 3.3% Oil, Gas & Consumable Fuels 3.2% Electronic Equipment, Instruments & Components 3.1% Specialty Retail 2.9% Financial Services 2.7% Other Industries Footnote Reference 56.5% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014702
Shareholder Report [Line Items]
Fund Name	NVIT International Equity Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT International Equity Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1400">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $51 0.98%
Expenses Paid, Amount	$ 51
Expense Ratio, Percent	0.98%
AssetsNet	$ 101,011,120
Holdings Count | Holding	249
InvestmentCompanyPortfolioTurnover	43.69%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $101,011,120 Number of Portfolio Holdings 249 Portfolio Turnover Rate 43.69%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.0% Repurchase Agreement 0.8% Other assets in excess of liabilities 0.2% Top Countries Footnote Reference Japan 13.9% China 8.5% United Kingdom 7.2% Canada 7.0% Taiwan 6.4% France 5.6% Switzerland 5.4% India 5.1% United States 4.6% Germany 4.5% Other Countries Footnote Reference 31.8% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreement is included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000033125
Shareholder Report [Line Items]
Fund Name	NVIT International Equity Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT International Equity Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1417">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $64 1.23%
Expenses Paid, Amount	$ 64
Expense Ratio, Percent	1.23%
AssetsNet	$ 101,011,120
Holdings Count | Holding	249
InvestmentCompanyPortfolioTurnover	43.69%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $101,011,120 Number of Portfolio Holdings 249 Portfolio Turnover Rate 43.69%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.0% Repurchase Agreement 0.8% Other assets in excess of liabilities 0.2% Top Countries Footnote Reference Japan 13.9% China 8.5% United Kingdom 7.2% Canada 7.0% Taiwan 6.4% France 5.6% Switzerland 5.4% India 5.1% United States 4.6% Germany 4.5% Other Countries Footnote Reference 31.8% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreement is included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000139945
Shareholder Report [Line Items]
Fund Name	NVIT International Index Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT International Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1434">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $23 0.45%
Expenses Paid, Amount	$ 23
Expense Ratio, Percent	0.45%
AssetsNet	$ 1,381,627,078
Holdings Count | Holding	766
InvestmentCompanyPortfolioTurnover	2.25%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,381,627,078 Number of Portfolio Holdings 766 Portfolio Turnover Rate 2.25%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.6% Repurchase Agreements 1.8% Other liabilities in excess of assets - Top Countries Footnote Reference Japan 22.4% United Kingdom 10.5% France 9.3% United States 8.9% Germany 8.4% Australia 7.4% Switzerland 6.3% Netherlands 4.8% Denmark 3.9% Sweden 3.2% Other Countries Footnote Reference 14.9% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000033506
Shareholder Report [Line Items]
Fund Name	NVIT International Index Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT International Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1451">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $35 0.68%
Expenses Paid, Amount	$ 35
Expense Ratio, Percent	0.68%
AssetsNet	$ 1,381,627,078
Holdings Count | Holding	766
InvestmentCompanyPortfolioTurnover	2.25%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,381,627,078 Number of Portfolio Holdings 766 Portfolio Turnover Rate 2.25%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.6% Repurchase Agreements 1.8% Other liabilities in excess of assets - Top Countries Footnote Reference Japan 22.4% United Kingdom 10.5% France 9.3% United States 8.9% Germany 8.4% Australia 7.4% Switzerland 6.3% Netherlands 4.8% Denmark 3.9% Sweden 3.2% Other Countries Footnote Reference 14.9% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000033509
Shareholder Report [Line Items]
Fund Name	NVIT International Index Fund
Class Name	Class VIII
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT International Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1468">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class VIII $41 0.80%
Expenses Paid, Amount	$ 41
Expense Ratio, Percent	0.80%
AssetsNet	$ 1,381,627,078
Holdings Count | Holding	766
InvestmentCompanyPortfolioTurnover	2.25%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,381,627,078 Number of Portfolio Holdings 766 Portfolio Turnover Rate 2.25%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.6% Repurchase Agreements 1.8% Other liabilities in excess of assets - Top Countries Footnote Reference Japan 22.4% United Kingdom 10.5% France 9.3% United States 8.9% Germany 8.4% Australia 7.4% Switzerland 6.3% Netherlands 4.8% Denmark 3.9% Sweden 3.2% Other Countries Footnote Reference 14.9% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000033505
Shareholder Report [Line Items]
Fund Name	NVIT International Index Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT International Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1485">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $16 0.30%
Expenses Paid, Amount	$ 16
Expense Ratio, Percent	0.30%
AssetsNet	$ 1,381,627,078
Holdings Count | Holding	766
InvestmentCompanyPortfolioTurnover	2.25%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,381,627,078 Number of Portfolio Holdings 766 Portfolio Turnover Rate 2.25%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.6% Repurchase Agreements 1.8% Other liabilities in excess of assets - Top Countries Footnote Reference Japan 22.4% United Kingdom 10.5% France 9.3% United States 8.9% Germany 8.4% Australia 7.4% Switzerland 6.3% Netherlands 4.8% Denmark 3.9% Sweden 3.2% Other Countries Footnote Reference 14.9% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014736
Shareholder Report [Line Items]
Fund Name	NVIT Invesco Small Cap Growth Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Invesco Small Cap Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1502">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $57 1.08%
Expenses Paid, Amount	$ 57
Expense Ratio, Percent	1.08%
AssetsNet	$ 145,748,534
Holdings Count | Holding	111
InvestmentCompanyPortfolioTurnover	69.76%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $145,748,534 Number of Portfolio Holdings 111 Portfolio Turnover Rate 69.76%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.6% Repurchase Agreements 11.0% Other liabilities in excess of assets - Top Industries Footnote Reference Software 9.1% Semiconductors & Semiconductor Equipment 8.0% Hotels, Restaurants & Leisure 5.6% Health Care Providers & Services 5.2% Electronic Equipment, Instruments & Components 5.2% Health Care Equipment & Supplies 5.1% Biotechnology 4.7% Capital Markets 4.4% Machinery 4.1% Commercial Services & Supplies 3.6% Other Industries Footnote Reference 45.0% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014737
Shareholder Report [Line Items]
Fund Name	NVIT Invesco Small Cap Growth Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Invesco Small Cap Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1519">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $70 1.33%
Expenses Paid, Amount	$ 70
Expense Ratio, Percent	1.33%
AssetsNet	$ 145,748,534
Holdings Count | Holding	111
InvestmentCompanyPortfolioTurnover	69.76%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $145,748,534 Number of Portfolio Holdings 111 Portfolio Turnover Rate 69.76%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.6% Repurchase Agreements 11.0% Other liabilities in excess of assets - Top Industries Footnote Reference Software 9.1% Semiconductors & Semiconductor Equipment 8.0% Hotels, Restaurants & Leisure 5.6% Health Care Providers & Services 5.2% Electronic Equipment, Instruments & Components 5.2% Health Care Equipment & Supplies 5.1% Biotechnology 4.7% Capital Markets 4.4% Machinery 4.1% Commercial Services & Supplies 3.6% Other Industries Footnote Reference 45.0% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014704
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Aggressive Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Aggressive Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1536">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $30 0.58%
Expenses Paid, Amount	$ 30
Expense Ratio, Percent	0.58%
AssetsNet	$ 393,432,999
Holdings Count | Holding	13
InvestmentCompanyPortfolioTurnover	44.63%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 86.5% Fixed Income Fund 12.9% Money Market Fund 0.7% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference Nationwide Fundamental All Cap Equity Portfolio, Class R6 37.6% NVIT International Index Fund, Class Y 19.8% NVIT J.P. Morgan U.S. Equity Fund, Class Y 13.1% NVIT Bond Index Fund, Class Y 7.7% NVIT Mid Cap Index Fund, Class Y 7.4% NVIT GS Emerging Markets Equity Insights Fund, Class Y 6.8% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 3.9% iShares 7-10 Year Treasury Bond ETF 1.1% iShares Core S&P Small-Cap ETF 1.0% Fidelity Investments Money Market Government Portfolio - Institutional Class 0.7% Other Holdings 0.9% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000112221
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Aggressive Fund
Class Name	Class P
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Aggressive Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1552">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P $22 0.43%
Expenses Paid, Amount	$ 22
Expense Ratio, Percent	0.43%
AssetsNet	$ 393,432,999
Holdings Count | Holding	13
InvestmentCompanyPortfolioTurnover	44.63%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 86.5% Fixed Income Fund 12.9% Money Market Fund 0.7% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference Nationwide Fundamental All Cap Equity Portfolio, Class R6 37.6% NVIT International Index Fund, Class Y 19.8% NVIT J.P. Morgan U.S. Equity Fund, Class Y 13.1% NVIT Bond Index Fund, Class Y 7.7% NVIT Mid Cap Index Fund, Class Y 7.4% NVIT GS Emerging Markets Equity Insights Fund, Class Y 6.8% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 3.9% iShares 7-10 Year Treasury Bond ETF 1.1% iShares Core S&P Small-Cap ETF 1.0% Fidelity Investments Money Market Government Portfolio - Institutional Class 0.7% Other Holdings 0.9% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000074482
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Balanced Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Balanced Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1568">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $29 0.57%
Expenses Paid, Amount	$ 29
Expense Ratio, Percent	0.57%
AssetsNet	$ 1,156,849,763
Holdings Count | Holding	15
InvestmentCompanyPortfolioTurnover	26.63%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 47.7% Equity Fund 45.8% Money Market Fund 6.5% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT Bond Index Fund, Class Y 28.6% Nationwide Fundamental All Cap Equity Portfolio, Class R6 22.0% NVIT International Index Fund, Class Y 8.8% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 8.4% NVIT J.P. Morgan U.S. Equity Fund, Class Y 7.9% Fidelity Investments Money Market Government Portfolio - Institutional Class 6.5% NVIT Loomis Short Term Bond Fund, Class Y 4.2% iShares 7-10 Year Treasury Bond ETF 3.8% NVIT GS Emerging Markets Equity Insights Fund, Class Y 3.5% NVIT Mid Cap Index Fund, Class Y 1.9% Other Holdings 4.4% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000112234
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Balanced Fund
Class Name	Class P
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Balanced Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1584">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P $21 0.42%
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.42%
AssetsNet	$ 1,156,849,763
Holdings Count | Holding	15
InvestmentCompanyPortfolioTurnover	26.63%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 47.7% Equity Fund 45.8% Money Market Fund 6.5% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT Bond Index Fund, Class Y 28.6% Nationwide Fundamental All Cap Equity Portfolio, Class R6 22.0% NVIT International Index Fund, Class Y 8.8% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 8.4% NVIT J.P. Morgan U.S. Equity Fund, Class Y 7.9% Fidelity Investments Money Market Government Portfolio - Institutional Class 6.5% NVIT Loomis Short Term Bond Fund, Class Y 4.2% iShares 7-10 Year Treasury Bond ETF 3.8% NVIT GS Emerging Markets Equity Insights Fund, Class Y 3.5% NVIT Mid Cap Index Fund, Class Y 1.9% Other Holdings 4.4% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000074480
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Capital Appreciation Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Capital Appreciation Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1600">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $29 0.57%
Expenses Paid, Amount	$ 29
Expense Ratio, Percent	0.57%
AssetsNet	$ 1,102,710,489
Holdings Count | Holding	14
InvestmentCompanyPortfolioTurnover	35.85%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 67.3% Fixed Income Fund 30.2% Money Market Fund 2.5% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference Nationwide Fundamental All Cap Equity Portfolio, Class R6 32.7% NVIT Bond Index Fund, Class Y 19.0% NVIT International Index Fund, Class Y 13.1% NVIT J.P. Morgan U.S. Equity Fund, Class Y 11.5% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 5.1% NVIT GS Emerging Markets Equity Insights Fund, Class Y 4.8% NVIT Mid Cap Index Fund, Class Y 2.9% Fidelity Investments Money Market Government Portfolio - Institutional Class 2.5% NVIT Loomis Short Term Bond Fund, Class Y 2.0% iShares 20+ Year Treasury Bond ETF 1.7% Other Holdings 4.7% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000112233
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Capital Appreciation Fund
Class Name	Class P
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Capital Appreciation Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1616">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P $21 0.42%
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.42%
AssetsNet	$ 1,102,710,489
Holdings Count | Holding	14
InvestmentCompanyPortfolioTurnover	35.85%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 67.3% Fixed Income Fund 30.2% Money Market Fund 2.5% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference Nationwide Fundamental All Cap Equity Portfolio, Class R6 32.7% NVIT Bond Index Fund, Class Y 19.0% NVIT International Index Fund, Class Y 13.1% NVIT J.P. Morgan U.S. Equity Fund, Class Y 11.5% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 5.1% NVIT GS Emerging Markets Equity Insights Fund, Class Y 4.8% NVIT Mid Cap Index Fund, Class Y 2.9% Fidelity Investments Money Market Government Portfolio - Institutional Class 2.5% NVIT Loomis Short Term Bond Fund, Class Y 2.0% iShares 20+ Year Treasury Bond ETF 1.7% Other Holdings 4.7% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014706
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Conservative Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Conservative Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1632">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $29 0.58%
Expenses Paid, Amount	$ 29
Expense Ratio, Percent	0.58%
AssetsNet	$ 467,935,854
Holdings Count | Holding	17
InvestmentCompanyPortfolioTurnover	13.70%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 75.5% Equity Fund 16.1% Money Market Fund 8.5% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference NVIT Bond Index Fund, Class Y 38.4% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 11.0% NVIT Loomis Short Term Bond Fund, Class Y 9.9% Fidelity Investments Money Market Government Portfolio - Institutional Class 8.5% Nationwide Fundamental All Cap Equity Portfolio, Class R6 8.3% iShares 7-10 Year Treasury Bond ETF 5.7% Nationwide Inflation-Protected Securities Fund, Class R6 5.0% iShares U.S. Treasury Bond ETF 3.2% NVIT J.P. Morgan U.S. Equity Fund, Class Y 3.0% NVIT International Index Fund, Class Y 2.9% Other Holdings Footnote Reference 4.1% Footnote Description Footnote # For purposes of listing top holdings, the repurchase agreement is included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000112222
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Conservative Fund
Class Name	Class P
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Conservative Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1648">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P $21 0.43%
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.43%
AssetsNet	$ 467,935,854
Holdings Count | Holding	17
InvestmentCompanyPortfolioTurnover	13.70%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 75.5% Equity Fund 16.1% Money Market Fund 8.5% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference NVIT Bond Index Fund, Class Y 38.4% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 11.0% NVIT Loomis Short Term Bond Fund, Class Y 9.9% Fidelity Investments Money Market Government Portfolio - Institutional Class 8.5% Nationwide Fundamental All Cap Equity Portfolio, Class R6 8.3% iShares 7-10 Year Treasury Bond ETF 5.7% Nationwide Inflation-Protected Securities Fund, Class R6 5.0% iShares U.S. Treasury Bond ETF 3.2% NVIT J.P. Morgan U.S. Equity Fund, Class Y 3.0% NVIT International Index Fund, Class Y 2.9% Other Holdings Footnote Reference 4.1% Footnote Description Footnote # For purposes of listing top holdings, the repurchase agreement is included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000139949
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Managed Growth &amp; Income Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Managed Growth &amp; Income Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1664">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $15 0.30%
Expenses Paid, Amount	$ 15
Expense Ratio, Percent	0.30%
AssetsNet	$ 418,830,024
Holdings Count | Holding	19
InvestmentCompanyPortfolioTurnover	29.76%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 43.7% Fixed Income Fund 43.4% Money Market Fund 5.6% Other assets in excess of liabilities 7.3% Top Ten Holdings Footnote Reference NVIT Bond Index Fund, Class Y 28.6% Nationwide Fundamental All Cap Equity Portfolio, Class R6 23.6% NVIT International Index Fund, Class Y 9.2% NVIT J.P. Morgan U.S. Equity Fund, Class Y 8.0% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 7.6% Fidelity Investments Money Market Government Portfolio - Institutional Class 6.0% iShares 7-10 Year Treasury Bond ETF 4.4% NVIT Loomis Short Term Bond Fund, Class Y 3.8% NVIT GS Emerging Markets Equity Insights Fund, Class Y 3.3% iShares U.S. Treasury Bond ETF 1.7% Other Holdings 3.8% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000125907
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Managed Growth &amp; Income Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Managed Growth &amp; Income Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1680">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $28 0.55%
Expenses Paid, Amount	$ 28
Expense Ratio, Percent	0.55%
AssetsNet	$ 418,830,024
Holdings Count | Holding	19
InvestmentCompanyPortfolioTurnover	29.76%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 43.7% Fixed Income Fund 43.4% Money Market Fund 5.6% Other assets in excess of liabilities 7.3% Top Ten Holdings Footnote Reference NVIT Bond Index Fund, Class Y 28.6% Nationwide Fundamental All Cap Equity Portfolio, Class R6 23.6% NVIT International Index Fund, Class Y 9.2% NVIT J.P. Morgan U.S. Equity Fund, Class Y 8.0% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 7.6% Fidelity Investments Money Market Government Portfolio - Institutional Class 6.0% iShares 7-10 Year Treasury Bond ETF 4.4% NVIT Loomis Short Term Bond Fund, Class Y 3.8% NVIT GS Emerging Markets Equity Insights Fund, Class Y 3.3% iShares U.S. Treasury Bond ETF 1.7% Other Holdings 3.8% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000139948
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Managed Growth Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Managed Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1696">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $16 0.31%
Expenses Paid, Amount	$ 16
Expense Ratio, Percent	0.31%
AssetsNet	$ 1,041,947,484
Holdings Count | Holding	18
InvestmentCompanyPortfolioTurnover	33.25%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 52.6% Fixed Income Fund 35.0% Money Market Fund 4.5% Other assets in excess of liabilities 7.9% Top Ten Holdings Footnote Reference Nationwide Fundamental All Cap Equity Portfolio, Class R6 29.4% NVIT Bond Index Fund, Class Y 24.0% NVIT International Index Fund, Class Y 10.8% NVIT J.P. Morgan U.S. Equity Fund, Class Y 10.0% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 6.5% Fidelity Investments Money Market Government Portfolio - Institutional Class 4.9% NVIT GS Emerging Markets Equity Insights Fund, Class Y 4.3% iShares 7-10 Year Treasury Bond ETF 3.0% NVIT Loomis Short Term Bond Fund, Class Y 1.9% NVIT Mid Cap Index Fund, Class Y 1.7% Other Holdings 3.5% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000125906
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Managed Growth Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Managed Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1712">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $29 0.56%
Expenses Paid, Amount	$ 29
Expense Ratio, Percent	0.56%
AssetsNet	$ 1,041,947,484
Holdings Count | Holding	18
InvestmentCompanyPortfolioTurnover	33.25%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 52.6% Fixed Income Fund 35.0% Money Market Fund 4.5% Other assets in excess of liabilities 7.9% Top Ten Holdings Footnote Reference Nationwide Fundamental All Cap Equity Portfolio, Class R6 29.4% NVIT Bond Index Fund, Class Y 24.0% NVIT International Index Fund, Class Y 10.8% NVIT J.P. Morgan U.S. Equity Fund, Class Y 10.0% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 6.5% Fidelity Investments Money Market Government Portfolio - Institutional Class 4.9% NVIT GS Emerging Markets Equity Insights Fund, Class Y 4.3% iShares 7-10 Year Treasury Bond ETF 3.0% NVIT Loomis Short Term Bond Fund, Class Y 1.9% NVIT Mid Cap Index Fund, Class Y 1.7% Other Holdings 3.5% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014708
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Moderate Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Moderate Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1728">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $29 0.57%
Expenses Paid, Amount	$ 29
Expense Ratio, Percent	0.57%
AssetsNet	$ 1,829,388,343
Holdings Count | Holding	14
InvestmentCompanyPortfolioTurnover	31.80%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 56.8% Fixed Income Fund 38.1% Money Market Fund 5.1% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference Nationwide Fundamental All Cap Equity Portfolio, Class R6 27.9% NVIT Bond Index Fund, Class Y 23.1% NVIT International Index Fund, Class Y 11.1% NVIT J.P. Morgan U.S. Equity Fund, Class Y 10.0% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 7.2% Fidelity Investments Money Market Government Portfolio - Institutional Class 5.1% NVIT GS Emerging Markets Equity Insights Fund, Class Y 4.7% iShares 7-10 Year Treasury Bond ETF 3.0% NVIT Mid Cap Index Fund, Class Y 2.1% NVIT Loomis Short Term Bond Fund, Class Y 2.0% Other Holdings 3.8% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000112223
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Moderate Fund
Class Name	Class P
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Moderate Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1744">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P $21 0.42%
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.42%
AssetsNet	$ 1,829,388,343
Holdings Count | Holding	14
InvestmentCompanyPortfolioTurnover	31.80%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 56.8% Fixed Income Fund 38.1% Money Market Fund 5.1% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference Nationwide Fundamental All Cap Equity Portfolio, Class R6 27.9% NVIT Bond Index Fund, Class Y 23.1% NVIT International Index Fund, Class Y 11.1% NVIT J.P. Morgan U.S. Equity Fund, Class Y 10.0% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 7.2% Fidelity Investments Money Market Government Portfolio - Institutional Class 5.1% NVIT GS Emerging Markets Equity Insights Fund, Class Y 4.7% iShares 7-10 Year Treasury Bond ETF 3.0% NVIT Mid Cap Index Fund, Class Y 2.1% NVIT Loomis Short Term Bond Fund, Class Y 2.0% Other Holdings 3.8% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014710
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Moderately Aggressive Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Moderately Aggressive Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1760">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $29 0.57%
Expenses Paid, Amount	$ 29
Expense Ratio, Percent	0.57%
AssetsNet	$ 1,005,869,321
Holdings Count | Holding	13
InvestmentCompanyPortfolioTurnover	39.07%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 77.0% Fixed Income Fund 21.8% Money Market Fund 1.2% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference Nationwide Fundamental All Cap Equity Portfolio, Class R6 34.6% NVIT International Index Fund, Class Y 17.0% NVIT Bond Index Fund, Class Y 15.0% NVIT J.P. Morgan U.S. Equity Fund, Class Y 12.2% NVIT GS Emerging Markets Equity Insights Fund, Class Y 5.7% NVIT Mid Cap Index Fund, Class Y 5.1% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 4.9% iShares 7-10 Year Treasury Bond ETF 1.6% iShares Core S&P Small-Cap ETF 1.2% Fidelity Investments Money Market Government Portfolio - Institutional Class 1.2% Other Holdings 1.5% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000112224
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Moderately Aggressive Fund
Class Name	Class P
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Moderately Aggressive Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1776">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P $22 0.42%
Expenses Paid, Amount	$ 22
Expense Ratio, Percent	0.42%
AssetsNet	$ 1,005,869,321
Holdings Count | Holding	13
InvestmentCompanyPortfolioTurnover	39.07%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 77.0% Fixed Income Fund 21.8% Money Market Fund 1.2% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference Nationwide Fundamental All Cap Equity Portfolio, Class R6 34.6% NVIT International Index Fund, Class Y 17.0% NVIT Bond Index Fund, Class Y 15.0% NVIT J.P. Morgan U.S. Equity Fund, Class Y 12.2% NVIT GS Emerging Markets Equity Insights Fund, Class Y 5.7% NVIT Mid Cap Index Fund, Class Y 5.1% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 4.9% iShares 7-10 Year Treasury Bond ETF 1.6% iShares Core S&P Small-Cap ETF 1.2% Fidelity Investments Money Market Government Portfolio - Institutional Class 1.2% Other Holdings 1.5% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014712
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Moderately Conservative Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Moderately Conservative Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1792">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $29 0.57%
Expenses Paid, Amount	$ 29
Expense Ratio, Percent	0.57%
AssetsNet	$ 531,624,085
Holdings Count | Holding	16
InvestmentCompanyPortfolioTurnover	20.98%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 56.9% Equity Fund 34.9% Money Market Fund 8.2% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT Bond Index Fund, Class Y 31.0% Nationwide Fundamental All Cap Equity Portfolio, Class R6 16.7% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 9.2% Fidelity Investments Money Market Government Portfolio - Institutional Class 8.2% NVIT International Index Fund, Class Y 6.6% NVIT J.P. Morgan U.S. Equity Fund, Class Y 6.0% NVIT Loomis Short Term Bond Fund, Class Y 5.7% iShares 7-10 Year Treasury Bond ETF 4.0% Nationwide Inflation-Protected Securities Fund, Class R6 3.1% iShares U.S. Treasury Bond ETF 2.3% Other Holdings 7.2% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000112225
Shareholder Report [Line Items]
Fund Name	NVIT Investor Destinations Moderately Conservative Fund
Class Name	Class P
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Investor Destinations Moderately Conservative Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1808">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class P $21 0.42%
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.42%
AssetsNet	$ 531,624,085
Holdings Count | Holding	16
InvestmentCompanyPortfolioTurnover	20.98%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 56.9% Equity Fund 34.9% Money Market Fund 8.2% Other liabilities in excess of assets 0.0% Top Ten Holdings Footnote Reference NVIT Bond Index Fund, Class Y 31.0% Nationwide Fundamental All Cap Equity Portfolio, Class R6 16.7% Nationwide BNY Mellon Core Plus Bond ESG Fund, Class R6 9.2% Fidelity Investments Money Market Government Portfolio - Institutional Class 8.2% NVIT International Index Fund, Class Y 6.6% NVIT J.P. Morgan U.S. Equity Fund, Class Y 6.0% NVIT Loomis Short Term Bond Fund, Class Y 5.7% iShares 7-10 Year Treasury Bond ETF 4.0% Nationwide Inflation-Protected Securities Fund, Class R6 3.1% iShares U.S. Treasury Bond ETF 2.3% Other Holdings 7.2% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000203213
Shareholder Report [Line Items]
Fund Name	®</sup> Fixed Income ETF Fund" id="sjs-B1818">NVIT iShares&lt;sup style="box-sizing: border-box; color: rgb(22, 87, 165); display: inline; flex-wrap: nowrap; font-size: 19px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: left;">®&lt;/sup> Fixed Income ETF Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT iShares ®
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1824">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $33 0.67%
Expenses Paid, Amount	$ 33
Expense Ratio, Percent	0.67%
AssetsNet	$ 63,150,189
Holdings Count | Holding	7
InvestmentCompanyPortfolioTurnover	1.02%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $63,150,189 Number of Portfolio Holdings 7 Portfolio Turnover Rate 1.02%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 99.9% Repurchase Agreement 16.7% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference iShares Core U.S. Aggregate Bond ETF 42.8% iShares Core 1-5 Year USD Bond ETF 12.9% iShares Core Total USD Bond Market ETF 8.6% iShares MBS ETF 8.6% iShares Core 10+ Year USD Bond ETF 8.5% iShares U.S. Treasury Bond ETF 4.3% Cantor Fitzgerald & Co. 14.3% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000203214
Shareholder Report [Line Items]
Fund Name	®</sup> Fixed Income ETF Fund" id="sjs-B1835">NVIT iShares&lt;sup style="box-sizing: border-box; color: rgb(22, 87, 165); display: inline; flex-wrap: nowrap; font-size: 19px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: left;">®&lt;/sup> Fixed Income ETF Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT iShares ®
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1841">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $8 0.17%
Expenses Paid, Amount	$ 8
Expense Ratio, Percent	0.17%
AssetsNet	$ 63,150,189
Holdings Count | Holding	7
InvestmentCompanyPortfolioTurnover	1.02%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $63,150,189 Number of Portfolio Holdings 7 Portfolio Turnover Rate 1.02%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Fixed Income Fund 99.9% Repurchase Agreement 16.7% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference iShares Core U.S. Aggregate Bond ETF 42.8% iShares Core 1-5 Year USD Bond ETF 12.9% iShares Core Total USD Bond Market ETF 8.6% iShares MBS ETF 8.6% iShares Core 10+ Year USD Bond ETF 8.5% iShares U.S. Treasury Bond ETF 4.3% Cantor Fitzgerald & Co. 14.3% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000203211
Shareholder Report [Line Items]
Fund Name	®</sup> Global Equity ETF Fund" id="sjs-B1852">NVIT iShares&lt;sup style="box-sizing: border-box; color: rgb(22, 87, 165); display: inline; flex-wrap: nowrap; font-size: 19px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: left;">®&lt;/sup> Global Equity ETF Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT iShares ®
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1858">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $35 0.67%
Expenses Paid, Amount	$ 35
Expense Ratio, Percent	0.67%
AssetsNet	$ 81,860,744
Holdings Count | Holding	17
InvestmentCompanyPortfolioTurnover	5.54%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $81,860,744 Number of Portfolio Holdings 17 Portfolio Turnover Rate 5.54%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 99.8% Repurchase Agreement 16.0% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference iShares Core S&P Total U.S. Stock Market ETF 24.2% iShares Core S&P Mid-Cap ETF 15.4% iShares Core MSCI International Developed Markets ETF 11.4% iShares Core MSCI EAFE ETF 9.7% iShares U.S. Equity Factor ETF 7.9% iShares Core S&P 500 ETF 6.3% iShares Core S&P Small-Cap ETF 2.4% iShares MSCI USA Momentum Factor ETF 1.9% iShares MSCI USA Quality Factor ETF 1.9% iShares U.S. Small-Cap Equity Factor ETF 1.7% Other Holdings Footnote Reference 17.2% Footnote Description Footnote # For purposes of listing top holdings, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000203212
Shareholder Report [Line Items]
Fund Name	®</sup> Global Equity ETF Fund" id="sjs-B1869">NVIT iShares&lt;sup style="box-sizing: border-box; color: rgb(22, 87, 165); display: inline; flex-wrap: nowrap; font-size: 19px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: left;">®&lt;/sup> Global Equity ETF Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT iShares ®
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1875">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $9 0.17%
Expenses Paid, Amount	$ 9
Expense Ratio, Percent	0.17%
AssetsNet	$ 81,860,744
Holdings Count | Holding	17
InvestmentCompanyPortfolioTurnover	5.54%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $81,860,744 Number of Portfolio Holdings 17 Portfolio Turnover Rate 5.54%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 99.8% Repurchase Agreement 16.0% Other liabilities in excess of assets - Top Ten Holdings Footnote Reference iShares Core S&P Total U.S. Stock Market ETF 24.2% iShares Core S&P Mid-Cap ETF 15.4% iShares Core MSCI International Developed Markets ETF 11.4% iShares Core MSCI EAFE ETF 9.7% iShares U.S. Equity Factor ETF 7.9% iShares Core S&P 500 ETF 6.3% iShares Core S&P Small-Cap ETF 2.4% iShares MSCI USA Momentum Factor ETF 1.9% iShares MSCI USA Quality Factor ETF 1.9% iShares U.S. Small-Cap Equity Factor ETF 1.7% Other Holdings Footnote Reference 17.2% Footnote Description Footnote # For purposes of listing top holdings, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000234864
Shareholder Report [Line Items]
Fund Name	NVIT J.P. Morgan Digital Evolution Strategy Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT J.P. Morgan Digital Evolution Strategy Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1892">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $35 0.62%
Expenses Paid, Amount	$ 35
Expense Ratio, Percent	0.62%
AssetsNet	$ 9,869,335
Holdings Count | Holding	34
InvestmentCompanyPortfolioTurnover	34.59%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $9,869,335 Number of Portfolio Holdings 34 Portfolio Turnover Rate 34.59%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.2% Other assets in excess of liabilities 2.8% Top Industries Footnote Reference Semiconductors & Semiconductor Equipment 31.6% Software 22.8% Interactive Media & Services 18.4% Technology Hardware, Storage & Peripherals 14.1% IT Services 4.1% Communications Equipment 2.9% Broadline Retail 2.0% Financial Services 1.4% Entertainment 1.1% Electronic Equipment, Instruments & Components 1.1% Other Industries 0.5% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000234865
Shareholder Report [Line Items]
Fund Name	NVIT J.P. Morgan Innovators Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT J.P. Morgan Innovators Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1909">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $33 0.62%
Expenses Paid, Amount	$ 33
Expense Ratio, Percent	0.62%
AssetsNet	$ 6,188,814
Holdings Count | Holding	51
InvestmentCompanyPortfolioTurnover	48.55%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $6,188,814 Number of Portfolio Holdings 51 Portfolio Turnover Rate 48.55%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.1% Other assets in excess of liabilities 2.9% Top Industries Footnote Reference Software 13.3% Semiconductors & Semiconductor Equipment 13.1% Technology Hardware, Storage & Peripherals 8.9% Financial Services 8.2% Health Care Equipment & Supplies 7.0% Broadline Retail 6.8% Interactive Media & Services 5.6% Capital Markets 4.0% Specialty Retail 3.6% Pharmaceuticals 2.7% Other Industries 26.8% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000234866
Shareholder Report [Line Items]
Fund Name	NVIT J.P. Morgan Large Cap Growth Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT J.P. Morgan Large Cap Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1926">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $34 0.62%
Expenses Paid, Amount	$ 34
Expense Ratio, Percent	0.62%
AssetsNet	$ 14,192,995
Holdings Count | Holding	60
InvestmentCompanyPortfolioTurnover	27.51%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $14,192,995 Number of Portfolio Holdings 60 Portfolio Turnover Rate 27.51%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 96.1% Other assets in excess of liabilities 3.9% Top Industries Footnote Reference Semiconductors & Semiconductor Equipment 18.8% Software 17.7% Interactive Media & Services 10.5% Broadline Retail 7.1% Pharmaceuticals 5.7% Technology Hardware, Storage & Peripherals 5.4% Entertainment 4.2% Hotels, Restaurants & Leisure 4.1% Financial Services 2.4% Electrical Equipment 2.3% Other Industries 21.8% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000210766
Shareholder Report [Line Items]
Fund Name	NVIT J.P. Morgan U.S. Equity Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT J.P. Morgan U.S. Equity Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1943">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $50 0.94%
Expenses Paid, Amount	$ 50
Expense Ratio, Percent	0.94%
AssetsNet	$ 836,229,959
Holdings Count | Holding	51
InvestmentCompanyPortfolioTurnover	22.81%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $836,229,959 Number of Portfolio Holdings 51 Portfolio Turnover Rate 22.81%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.5% Other assets in excess of liabilities 0.5% Top Industries Footnote Reference Semiconductors & Semiconductor Equipment 13.0% Software 12.8% Technology Hardware, Storage & Peripherals 8.5% Interactive Media & Services 6.5% Biotechnology 6.2% Broadline Retail 4.4% Specialty Retail 4.3% Banks 3.8% Financial Services 3.2% Electric Utilities 3.0% Other Industries 34.3% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000210767
Shareholder Report [Line Items]
Fund Name	NVIT J.P. Morgan U.S. Equity Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT J.P. Morgan U.S. Equity Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1960">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $21 0.40%
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.40%
AssetsNet	$ 836,229,959
Holdings Count | Holding	51
InvestmentCompanyPortfolioTurnover	22.81%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $836,229,959 Number of Portfolio Holdings 51 Portfolio Turnover Rate 22.81%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.5% Other assets in excess of liabilities 0.5% Top Industries Footnote Reference Semiconductors & Semiconductor Equipment 13.0% Software 12.8% Technology Hardware, Storage & Peripherals 8.5% Interactive Media & Services 6.5% Biotechnology 6.2% Broadline Retail 4.4% Specialty Retail 4.3% Banks 3.8% Financial Services 3.2% Electric Utilities 3.0% Other Industries 34.3% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000234867
Shareholder Report [Line Items]
Fund Name	NVIT J.P. Morgan US Technology Leaders Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT J.P. Morgan US Technology Leaders Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1977">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $34 0.62%
Expenses Paid, Amount	$ 34
Expense Ratio, Percent	0.62%
AssetsNet	$ 13,499,770
Holdings Count | Holding	57
InvestmentCompanyPortfolioTurnover	25.83%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $13,499,770 Number of Portfolio Holdings 57 Portfolio Turnover Rate 25.83%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.9% Other assets in excess of liabilities 1.1% Top Industries Footnote Reference Semiconductors & Semiconductor Equipment 35.3% Software 26.1% Interactive Media & Services 9.4% IT Services 4.8% Entertainment 4.8% Broadline Retail 4.4% Automobiles 2.6% Communications Equipment 1.9% Ground Transportation 1.9% Media 1.9% Other Industries Footnote Reference 6.9% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreement is included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059820
Shareholder Report [Line Items]
Fund Name	NVIT Jacobs Levy Large Cap Core Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Jacobs Levy Large Cap Core Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B1994">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $41 0.77%
Expenses Paid, Amount	$ 41
Expense Ratio, Percent	0.77%
AssetsNet	$ 244,482,134
Holdings Count | Holding	142
InvestmentCompanyPortfolioTurnover	34.04%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $244,482,134 Number of Portfolio Holdings 142 Portfolio Turnover Rate 34.04%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.5% Other assets in excess of liabilities 0.5% Top Industries Footnote Reference Software 14.1% Semiconductors & Semiconductor Equipment 8.2% Technology Hardware, Storage & Peripherals 7.1% Health Care Providers & Services 5.1% Insurance 5.1% Interactive Media & Services 4.9% Ground Transportation 4.6% Oil, Gas & Consumable Fuels 4.3% Hotels, Restaurants & Leisure 4.2% Professional Services 3.6% Other Industries 38.8% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059821
Shareholder Report [Line Items]
Fund Name	NVIT Jacobs Levy Large Cap Core Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Jacobs Levy Large Cap Core Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2011">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $46 0.87%
Expenses Paid, Amount	$ 46
Expense Ratio, Percent	0.87%
AssetsNet	$ 244,482,134
Holdings Count | Holding	142
InvestmentCompanyPortfolioTurnover	34.04%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $244,482,134 Number of Portfolio Holdings 142 Portfolio Turnover Rate 34.04%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.5% Other assets in excess of liabilities 0.5% Top Industries Footnote Reference Software 14.1% Semiconductors & Semiconductor Equipment 8.2% Technology Hardware, Storage & Peripherals 7.1% Health Care Providers & Services 5.1% Insurance 5.1% Interactive Media & Services 4.9% Ground Transportation 4.6% Oil, Gas & Consumable Fuels 4.3% Hotels, Restaurants & Leisure 4.2% Professional Services 3.6% Other Industries 38.8% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059811
Shareholder Report [Line Items]
Fund Name	NVIT Jacobs Levy Large Cap Growth Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Jacobs Levy Large Cap Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2028">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $76 1.41%
Expenses Paid, Amount	$ 76
Expense Ratio, Percent	1.41%
AssetsNet	$ 401,149,516
Holdings Count | Holding	305
InvestmentCompanyPortfolioTurnover	48.48%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $401,149,516 Number of Portfolio Holdings 305 Portfolio Turnover Rate 48.48%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.1% Repurchase Agreements 4.9% Other liabilities in excess of assets - Top Industries Footnote Reference Software 23.7% Technology Hardware, Storage & Peripherals 6.7% Hotels, Restaurants & Leisure 5.9% Semiconductors & Semiconductor Equipment 5.6% Interactive Media & Services 5.0% Broadline Retail 4.8% Professional Services 4.7% Health Care Providers & Services 3.7% Insurance 3.6% Ground Transportation 3.5% Other Industries Footnote Reference 32.8% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059812
Shareholder Report [Line Items]
Fund Name	NVIT Jacobs Levy Large Cap Growth Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Jacobs Levy Large Cap Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2045">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $33 0.61%
Expenses Paid, Amount	$ 33
Expense Ratio, Percent	0.61%
AssetsNet	$ 401,149,516
Holdings Count | Holding	305
InvestmentCompanyPortfolioTurnover	48.48%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $401,149,516 Number of Portfolio Holdings 305 Portfolio Turnover Rate 48.48%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.1% Repurchase Agreements 4.9% Other liabilities in excess of assets - Top Industries Footnote Reference Software 23.7% Technology Hardware, Storage & Peripherals 6.7% Hotels, Restaurants & Leisure 5.9% Semiconductors & Semiconductor Equipment 5.6% Interactive Media & Services 5.0% Broadline Retail 4.8% Professional Services 4.7% Health Care Providers & Services 3.7% Insurance 3.6% Ground Transportation 3.5% Other Industries Footnote Reference 32.8% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059825
Shareholder Report [Line Items]
Fund Name	NVIT Loomis Short Term Bond Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Loomis Short Term Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2062">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $27 0.54%
Expenses Paid, Amount	$ 27
Expense Ratio, Percent	0.54%
AssetsNet	$ 1,227,009,923
Holdings Count | Holding	423
InvestmentCompanyPortfolioTurnover	141.70%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,227,009,923 Number of Portfolio Holdings 423 Portfolio Turnover Rate 141.70%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Corporate Bond 46.8% Asset-Backed Security 30.1% U.S. Treasury Obligation 18.8% Repurchase Agreement 5.0% Commercial Mortgage-Backed Security 1.7% Mortgage-Backed Security 1.6% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 7.4% Insurance 5.1% Capital Markets 4.5% Electric Utilities 3.0% Financial Services 2.8% Consumer Finance 2.5% Multi-Utilities 1.9% Oil, Gas & Consumable Fuels 1.4% Specialty Retail 1.3% Chemicals 1.1% Other Industries Footnote Reference 69.0% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059826
Shareholder Report [Line Items]
Fund Name	NVIT Loomis Short Term Bond Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Loomis Short Term Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2079">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $40 0.79%
Expenses Paid, Amount	$ 40
Expense Ratio, Percent	0.79%
AssetsNet	$ 1,227,009,923
Holdings Count | Holding	423
InvestmentCompanyPortfolioTurnover	141.70%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,227,009,923 Number of Portfolio Holdings 423 Portfolio Turnover Rate 141.70%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Corporate Bond 46.8% Asset-Backed Security 30.1% U.S. Treasury Obligation 18.8% Repurchase Agreement 5.0% Commercial Mortgage-Backed Security 1.7% Mortgage-Backed Security 1.6% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 7.4% Insurance 5.1% Capital Markets 4.5% Electric Utilities 3.0% Financial Services 2.8% Consumer Finance 2.5% Multi-Utilities 1.9% Oil, Gas & Consumable Fuels 1.4% Specialty Retail 1.3% Chemicals 1.1% Other Industries Footnote Reference 69.0% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059827
Shareholder Report [Line Items]
Fund Name	NVIT Loomis Short Term Bond Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Loomis Short Term Bond Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2096">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $20 0.39%
Expenses Paid, Amount	$ 20
Expense Ratio, Percent	0.39%
AssetsNet	$ 1,227,009,923
Holdings Count | Holding	423
InvestmentCompanyPortfolioTurnover	141.70%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,227,009,923 Number of Portfolio Holdings 423 Portfolio Turnover Rate 141.70%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Corporate Bond 46.8% Asset-Backed Security 30.1% U.S. Treasury Obligation 18.8% Repurchase Agreement 5.0% Commercial Mortgage-Backed Security 1.7% Mortgage-Backed Security 1.6% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 7.4% Insurance 5.1% Capital Markets 4.5% Electric Utilities 3.0% Financial Services 2.8% Consumer Finance 2.5% Multi-Utilities 1.9% Oil, Gas & Consumable Fuels 1.4% Specialty Retail 1.3% Chemicals 1.1% Other Industries Footnote Reference 69.0% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000138646
Shareholder Report [Line Items]
Fund Name	NVIT Managed American Funds Asset Allocation Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Managed American Funds Asset Allocation Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2113">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $36 0.68%
Expenses Paid, Amount	$ 36
Expense Ratio, Percent	0.68%
AssetsNet	$ 2,873,117,431
Holdings Count | Holding	9
InvestmentCompanyPortfolioTurnover	4.14%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $2,873,117,431 Number of Portfolio Holdings 9 Portfolio Turnover Rate 4.14%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 46.0% Balanced Fund 27.4% Fixed Income Fund 18.2% Other assets in excess of liabilities 8.4% Top Ten Holdings Footnote Reference American Funds Growth Fund, Class 1 30.2% American Balanced Fund, Class R6 29.9% American Funds Washington Mutual Investors Fund, Class 1 20.0% Bond Fund of America (The), Class R6 14.9% American Funds U.S. Government Securities Fund, Class 1 5.0% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000138647
Shareholder Report [Line Items]
Fund Name	NVIT Managed American Funds Growth-Income Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Managed American Funds Growth-Income Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2130">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $36 0.69%
Expenses Paid, Amount	$ 36
Expense Ratio, Percent	0.69%
AssetsNet	$ 745,124,221
Holdings Count | Holding	5
InvestmentCompanyPortfolioTurnover	5.65%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $745,124,221 Number of Portfolio Holdings 5 Portfolio Turnover Rate 5.65%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Equity Fund 94.4% Other assets in excess of liabilities 5.6% Top Ten Holdings Footnote Reference American Funds Growth-Income Fund, Class 1 100.0% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014721
Shareholder Report [Line Items]
Fund Name	NVIT Mid Cap Index Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Mid Cap Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2147">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $21 0.40%
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.40%
AssetsNet	$ 1,186,068,808
Holdings Count | Holding	410
InvestmentCompanyPortfolioTurnover	9.74%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,186,068,808 Number of Portfolio Holdings 410 Portfolio Turnover Rate 9.74%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.0% Repurchase Agreements 11.6% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 4.7% Oil, Gas & Consumable Fuels 4.4% Insurance 4.2% Machinery 4.0% Specialty Retail 3.6% Building Products 3.3% Hotels, Restaurants & Leisure 3.2% Biotechnology 2.9% Capital Markets 2.8% Semiconductors & Semiconductor Equipment 2.5% Other Industries Footnote Reference 64.4% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014722
Shareholder Report [Line Items]
Fund Name	NVIT Mid Cap Index Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Mid Cap Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2164">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $31 0.60%
Expenses Paid, Amount	$ 31
Expense Ratio, Percent	0.60%
AssetsNet	$ 1,186,068,808
Holdings Count | Holding	410
InvestmentCompanyPortfolioTurnover	9.74%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,186,068,808 Number of Portfolio Holdings 410 Portfolio Turnover Rate 9.74%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.0% Repurchase Agreements 11.6% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 4.7% Oil, Gas & Consumable Fuels 4.4% Insurance 4.2% Machinery 4.0% Specialty Retail 3.6% Building Products 3.3% Hotels, Restaurants & Leisure 3.2% Biotechnology 2.9% Capital Markets 2.8% Semiconductors & Semiconductor Equipment 2.5% Other Industries Footnote Reference 64.4% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000034093
Shareholder Report [Line Items]
Fund Name	NVIT Mid Cap Index Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Mid Cap Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2181">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $13 0.25%
Expenses Paid, Amount	$ 13
Expense Ratio, Percent	0.25%
AssetsNet	$ 1,186,068,808
Holdings Count | Holding	410
InvestmentCompanyPortfolioTurnover	9.74%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $1,186,068,808 Number of Portfolio Holdings 410 Portfolio Turnover Rate 9.74%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.0% Repurchase Agreements 11.6% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 4.7% Oil, Gas & Consumable Fuels 4.4% Insurance 4.2% Machinery 4.0% Specialty Retail 3.6% Building Products 3.3% Hotels, Restaurants & Leisure 3.2% Biotechnology 2.9% Capital Markets 2.8% Semiconductors & Semiconductor Equipment 2.5% Other Industries Footnote Reference 64.4% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014739
Shareholder Report [Line Items]
Fund Name	NVIT Multi-Manager Small Cap Value Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Multi-Manager Small Cap Value Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2198">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $53 1.06%
Expenses Paid, Amount	$ 53
Expense Ratio, Percent	1.06%
AssetsNet	$ 204,991,435
Holdings Count | Holding	401
InvestmentCompanyPortfolioTurnover	16.48%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $204,991,435 Number of Portfolio Holdings 401 Portfolio Turnover Rate 16.48%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.5% Repurchase Agreements 10.3% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 7.5% Health Care Providers & Services 5.8% Insurance 5.4% Oil, Gas & Consumable Fuels 5.2% Chemicals 4.1% Building Products 3.8% Professional Services 3.6% Software 3.1% Biotechnology 3.0% Household Durables 2.9% Other Industries Footnote Reference 55.6% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014740
Shareholder Report [Line Items]
Fund Name	NVIT Multi-Manager Small Cap Value Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Multi-Manager Small Cap Value Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2215">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $65 1.31%
Expenses Paid, Amount	$ 65
Expense Ratio, Percent	1.31%
AssetsNet	$ 204,991,435
Holdings Count | Holding	401
InvestmentCompanyPortfolioTurnover	16.48%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $204,991,435 Number of Portfolio Holdings 401 Portfolio Turnover Rate 16.48%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.5% Repurchase Agreements 10.3% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 7.5% Health Care Providers & Services 5.8% Insurance 5.4% Oil, Gas & Consumable Fuels 5.2% Chemicals 4.1% Building Products 3.8% Professional Services 3.6% Software 3.1% Biotechnology 3.0% Household Durables 2.9% Other Industries Footnote Reference 55.6% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014742
Shareholder Report [Line Items]
Fund Name	NVIT Multi-Manager Small Cap Value Fund
Class Name	Class IV
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Multi-Manager Small Cap Value Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2232">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class IV $53 1.06%
Expenses Paid, Amount	$ 53
Expense Ratio, Percent	1.06%
AssetsNet	$ 204,991,435
Holdings Count | Holding	401
InvestmentCompanyPortfolioTurnover	16.48%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $204,991,435 Number of Portfolio Holdings 401 Portfolio Turnover Rate 16.48%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.5% Repurchase Agreements 10.3% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 7.5% Health Care Providers & Services 5.8% Insurance 5.4% Oil, Gas & Consumable Fuels 5.2% Chemicals 4.1% Building Products 3.8% Professional Services 3.6% Software 3.1% Biotechnology 3.0% Household Durables 2.9% Other Industries Footnote Reference 55.6% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014743
Shareholder Report [Line Items]
Fund Name	NVIT Multi-Manager Small Company Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Multi-Manager Small Company Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2249">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $53 1.04%
Expenses Paid, Amount	$ 53
Expense Ratio, Percent	1.04%
AssetsNet	$ 344,970,844
Holdings Count | Holding	467
InvestmentCompanyPortfolioTurnover	27.20%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $344,970,844 Number of Portfolio Holdings 467 Portfolio Turnover Rate 27.20%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.0% Repurchase Agreements 11.5% Other liabilities in excess of assets - Top Countries Footnote Reference United States 83.6% Puerto Rico 1.4% Canada 1.3% Israel 0.8% Monaco 0.8% United Kingdom 0.7% Thailand 0.3% Japan 0.3% Norway 0.3% Netherlands 0.1% Other Countries Footnote Reference 10.4% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014744
Shareholder Report [Line Items]
Fund Name	NVIT Multi-Manager Small Company Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Multi-Manager Small Company Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2266">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $65 1.29%
Expenses Paid, Amount	$ 65
Expense Ratio, Percent	1.29%
AssetsNet	$ 344,970,844
Holdings Count | Holding	467
InvestmentCompanyPortfolioTurnover	27.20%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $344,970,844 Number of Portfolio Holdings 467 Portfolio Turnover Rate 27.20%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.0% Repurchase Agreements 11.5% Other liabilities in excess of assets - Top Countries Footnote Reference United States 83.6% Puerto Rico 1.4% Canada 1.3% Israel 0.8% Monaco 0.8% United Kingdom 0.7% Thailand 0.3% Japan 0.3% Norway 0.3% Netherlands 0.1% Other Countries Footnote Reference 10.4% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014746
Shareholder Report [Line Items]
Fund Name	NVIT Multi-Manager Small Company Fund
Class Name	Class IV
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Multi-Manager Small Company Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2283">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class IV $53 1.04%
Expenses Paid, Amount	$ 53
Expense Ratio, Percent	1.04%
AssetsNet	$ 344,970,844
Holdings Count | Holding	467
InvestmentCompanyPortfolioTurnover	27.20%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $344,970,844 Number of Portfolio Holdings 467 Portfolio Turnover Rate 27.20%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.0% Repurchase Agreements 11.5% Other liabilities in excess of assets - Top Countries Footnote Reference United States 83.6% Puerto Rico 1.4% Canada 1.3% Israel 0.8% Monaco 0.8% United Kingdom 0.7% Thailand 0.3% Japan 0.3% Norway 0.3% Netherlands 0.1% Other Countries Footnote Reference 10.4% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059808
Shareholder Report [Line Items]
Fund Name	NVIT NS Partners International Focused Growth Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT NS Partners International Focused Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2300">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $50 0.97%
Expenses Paid, Amount	$ 50
Expense Ratio, Percent	0.97%
AssetsNet	$ 215,217,941
Holdings Count | Holding	50
InvestmentCompanyPortfolioTurnover	19.16%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $215,217,941 Number of Portfolio Holdings 50 Portfolio Turnover Rate 19.16%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.5% Repurchase Agreement 1.6% Other liabilities in excess of assets - Top Countries Footnote Reference Japan 19.6% Netherlands 12.7% United States 10.8% France 10.5% Germany 8.9% Denmark 7.1% Switzerland 5.6% Australia 5.4% Hong Kong 4.5% Spain 4.0% Other Countries Footnote Reference 10.9% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreement is included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059809
Shareholder Report [Line Items]
Fund Name	NVIT NS Partners International Focused Growth Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT NS Partners International Focused Growth Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2317">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $62 1.22%
Expenses Paid, Amount	$ 62
Expense Ratio, Percent	1.22%
AssetsNet	$ 215,217,941
Holdings Count | Holding	50
InvestmentCompanyPortfolioTurnover	19.16%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $215,217,941 Number of Portfolio Holdings 50 Portfolio Turnover Rate 19.16%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.5% Repurchase Agreement 1.6% Other liabilities in excess of assets - Top Countries Footnote Reference Japan 19.6% Netherlands 12.7% United States 10.8% France 10.5% Germany 8.9% Denmark 7.1% Switzerland 5.6% Australia 5.4% Hong Kong 4.5% Spain 4.0% Other Countries Footnote Reference 10.9% Footnote Description Footnote # For purposes of listing top countries, the repurchase agreement is included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059822
Shareholder Report [Line Items]
Fund Name	NVIT Real Estate Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Real Estate Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2334">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $42 0.84%
Expenses Paid, Amount	$ 42
Expense Ratio, Percent	0.84%
AssetsNet	$ 207,300,172
Holdings Count | Holding	36
InvestmentCompanyPortfolioTurnover	31.60%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $207,300,172 Number of Portfolio Holdings 36 Portfolio Turnover Rate 31.60%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.2% Other assets in excess of liabilities 1.8% Top Industries Footnote Reference Specialized REITs 26.3% Residential REITs 18.6% Retail REITs 13.9% Industrial REITs 13.0% Health Care REITs 11.6% Diversified REITs 5.8% Office REITs 3.2% Real Estate Management & Development 2.2% Hotels, Restaurants & Leisure 2.2% Hotel & Resort REITs 2.0% Other Industries 1.2% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059823
Shareholder Report [Line Items]
Fund Name	NVIT Real Estate Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Real Estate Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2351">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $54 1.09%
Expenses Paid, Amount	$ 54
Expense Ratio, Percent	1.09%
AssetsNet	$ 207,300,172
Holdings Count | Holding	36
InvestmentCompanyPortfolioTurnover	31.60%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $207,300,172 Number of Portfolio Holdings 36 Portfolio Turnover Rate 31.60%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.2% Other assets in excess of liabilities 1.8% Top Industries Footnote Reference Specialized REITs 26.3% Residential REITs 18.6% Retail REITs 13.9% Industrial REITs 13.0% Health Care REITs 11.6% Diversified REITs 5.8% Office REITs 3.2% Real Estate Management & Development 2.2% Hotels, Restaurants & Leisure 2.2% Hotel & Resort REITs 2.0% Other Industries 1.2% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000033129
Shareholder Report [Line Items]
Fund Name	NVIT S&amp;P 500 Index Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT S&amp;P 500 Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2368">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $13 0.24%
Expenses Paid, Amount	$ 13
Expense Ratio, Percent	0.24%
AssetsNet	$ 3,835,430,600
Holdings Count | Holding	512
InvestmentCompanyPortfolioTurnover	0.48%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $3,835,430,600 Number of Portfolio Holdings 512 Portfolio Turnover Rate 0.48%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.7% Repurchase Agreements 4.2% Other liabilities in excess of assets - Top Industries Footnote Reference Semiconductors & Semiconductor Equipment 11.5% Software 10.5% Technology Hardware, Storage & Peripherals 6.7% Interactive Media & Services 6.4% Broadline Retail 3.8% Financial Services 3.7% Pharmaceuticals 3.6% Oil, Gas & Consumable Fuels 3.2% Banks 3.1% Capital Markets 2.7% Other Industries Footnote Reference 44.8% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000033130
Shareholder Report [Line Items]
Fund Name	NVIT S&amp;P 500 Index Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT S&amp;P 500 Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2385">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $26 0.49%
Expenses Paid, Amount	$ 26
Expense Ratio, Percent	0.49%
AssetsNet	$ 3,835,430,600
Holdings Count | Holding	512
InvestmentCompanyPortfolioTurnover	0.48%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $3,835,430,600 Number of Portfolio Holdings 512 Portfolio Turnover Rate 0.48%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.7% Repurchase Agreements 4.2% Other liabilities in excess of assets - Top Industries Footnote Reference Semiconductors & Semiconductor Equipment 11.5% Software 10.5% Technology Hardware, Storage & Peripherals 6.7% Interactive Media & Services 6.4% Broadline Retail 3.8% Financial Services 3.7% Pharmaceuticals 3.6% Oil, Gas & Consumable Fuels 3.2% Banks 3.1% Capital Markets 2.7% Other Industries Footnote Reference 44.8% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000014735
Shareholder Report [Line Items]
Fund Name	NVIT S&amp;P 500 Index Fund
Class Name	Class IV
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT S&amp;P 500 Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2402">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class IV $14 0.26%
Expenses Paid, Amount	$ 14
Expense Ratio, Percent	0.26%
AssetsNet	$ 3,835,430,600
Holdings Count | Holding	512
InvestmentCompanyPortfolioTurnover	0.48%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $3,835,430,600 Number of Portfolio Holdings 512 Portfolio Turnover Rate 0.48%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.7% Repurchase Agreements 4.2% Other liabilities in excess of assets - Top Industries Footnote Reference Semiconductors & Semiconductor Equipment 11.5% Software 10.5% Technology Hardware, Storage & Peripherals 6.7% Interactive Media & Services 6.4% Broadline Retail 3.8% Financial Services 3.7% Pharmaceuticals 3.6% Oil, Gas & Consumable Fuels 3.2% Banks 3.1% Capital Markets 2.7% Other Industries Footnote Reference 44.8% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000034094
Shareholder Report [Line Items]
Fund Name	NVIT S&amp;P 500 Index Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT S&amp;P 500 Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2419">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $9 0.16%
Expenses Paid, Amount	$ 9
Expense Ratio, Percent	0.16%
AssetsNet	$ 3,835,430,600
Holdings Count | Holding	512
InvestmentCompanyPortfolioTurnover	0.48%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $3,835,430,600 Number of Portfolio Holdings 512 Portfolio Turnover Rate 0.48%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 98.7% Repurchase Agreements 4.2% Other liabilities in excess of assets - Top Industries Footnote Reference Semiconductors & Semiconductor Equipment 11.5% Software 10.5% Technology Hardware, Storage & Peripherals 6.7% Interactive Media & Services 6.4% Broadline Retail 3.8% Financial Services 3.7% Pharmaceuticals 3.6% Oil, Gas & Consumable Fuels 3.2% Banks 3.1% Capital Markets 2.7% Other Industries Footnote Reference 44.8% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000033510
Shareholder Report [Line Items]
Fund Name	NVIT Small Cap Index Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Small Cap Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2436">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $29 0.58%
Expenses Paid, Amount	$ 29
Expense Ratio, Percent	0.58%
AssetsNet	$ 413,375,576
Holdings Count | Holding	2,027
InvestmentCompanyPortfolioTurnover	15.15%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $413,375,576 Number of Portfolio Holdings 2,027 Portfolio Turnover Rate 15.15%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.4% Repurchase Agreements 11.1% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 8.3% Biotechnology 7.9% Software 5.5% Oil, Gas & Consumable Fuels 3.5% Machinery 3.4% Health Care Equipment & Supplies 3.1% Electronic Equipment, Instruments & Components 2.8% Health Care Providers & Services 2.6% Financial Services 2.5% Energy Equipment & Services 2.5% Other Industries Footnote Reference 57.9% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000033512
Shareholder Report [Line Items]
Fund Name	NVIT Small Cap Index Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Small Cap Index Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2453">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $13 0.25%
Expenses Paid, Amount	$ 13
Expense Ratio, Percent	0.25%
AssetsNet	$ 413,375,576
Holdings Count | Holding	2,027
InvestmentCompanyPortfolioTurnover	15.15%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $413,375,576 Number of Portfolio Holdings 2,027 Portfolio Turnover Rate 15.15%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 99.4% Repurchase Agreements 11.1% Other liabilities in excess of assets - Top Industries Footnote Reference Banks 8.3% Biotechnology 7.9% Software 5.5% Oil, Gas & Consumable Fuels 3.5% Machinery 3.4% Health Care Equipment & Supplies 3.1% Electronic Equipment, Instruments & Components 2.8% Health Care Providers & Services 2.6% Financial Services 2.5% Energy Equipment & Services 2.5% Other Industries Footnote Reference 57.9% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000216457
Shareholder Report [Line Items]
Fund Name	NVIT U.S. 130/30 Equity Fund
Class Name	Class Y
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT U.S. 130/30 Equity Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2470">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $42 0.80%
Expenses Paid, Amount	$ 42
Expense Ratio, Percent	0.80%
AssetsNet	$ 906,286,849
Holdings Count | Holding	302
InvestmentCompanyPortfolioTurnover	32.50%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $906,286,849 Number of Portfolio Holdings 302 Portfolio Turnover Rate 32.50%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 97.9% Other assets in excess of liabilities 2.1% Top Industries Footnote Reference Software 12.3% Semiconductors & Semiconductor Equipment 9.5% Technology Hardware, Storage & Peripherals 7.8% Insurance 5.7% Ground Transportation 5.3% Professional Services 4.5% Chemicals 4.4% Financial Services 4.3% Hotels, Restaurants & Leisure 4.3% Oil, Gas & Consumable Fuels 3.9% Other Industries 38.0% Footnote Description Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059817
Shareholder Report [Line Items]
Fund Name	NVIT Victory Mid Cap Value Fund
Class Name	Class I
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Victory Mid Cap Value Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2487">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I $47 0.93%
Expenses Paid, Amount	$ 47
Expense Ratio, Percent	0.93%
AssetsNet	$ 325,943,968
Holdings Count | Holding	79
InvestmentCompanyPortfolioTurnover	70.41%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $325,943,968 Number of Portfolio Holdings 79 Portfolio Turnover Rate 70.41%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 96.6% Repurchase Agreements 11.8% Other liabilities in excess of assets - Top Industries Footnote Reference Insurance 8.6% Professional Services 6.3% Consumer Staples Distribution & Retail 5.2% Containers & Packaging 4.8% Machinery 4.6% Chemicals 4.4% Oil, Gas & Consumable Fuels 3.8% Health Care Equipment & Supplies 3.7% Ground Transportation 3.6% Hotels, Restaurants & Leisure 3.2% Other Industries Footnote Reference 51.8% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.
C000059818
Shareholder Report [Line Items]
Fund Name	NVIT Victory Mid Cap Value Fund
Class Name	Class II
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about the NVIT Victory Mid Cap Value Fund (the "Fund") for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-Annual Shareholder Report
Additional Information [Text Block]	You can find additional information about the Fund at https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html
Additional Information Phone Number	1-800-848-6331
Additional Information Website	https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html</span>" id="sjs-B2504">&lt;span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">https://nationwidefunds.onlineprospectus.net/nationwidefunds/nvitfunds/index.html&lt;/span>
Expenses [Text Block]	What were the Fund costs for the past six months? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II $51 1.02%
Expenses Paid, Amount	$ 51
Expense Ratio, Percent	1.02%
AssetsNet	$ 325,943,968
Holdings Count | Holding	79
InvestmentCompanyPortfolioTurnover	70.41%
Additional Fund Statistics [Text Block]	Key Fund Statistics Net Assets $325,943,968 Number of Portfolio Holdings 79 Portfolio Turnover Rate 70.41%
Holdings [Text Block]	Asset Class Weightings Footnote Reference Value Value Common Stocks 96.6% Repurchase Agreements 11.8% Other liabilities in excess of assets - Top Industries Footnote Reference Insurance 8.6% Professional Services 6.3% Consumer Staples Distribution & Retail 5.2% Containers & Packaging 4.8% Machinery 4.6% Chemicals 4.4% Oil, Gas & Consumable Fuels 3.8% Health Care Equipment & Supplies 3.7% Ground Transportation 3.6% Hotels, Restaurants & Leisure 3.2% Other Industries Footnote Reference 51.8% Footnote Description Footnote # For purposes of listing top industries, the repurchase agreements are included as part of Other. Footnote 1 Percentages indicated are based upon net assets as of June 30, 2024. Footnote 2 Percentages indicated are based upon total investments as of June 30, 2024.

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Jun. 30, 2024
C000059814 | Software
Holdings [Line Items]
Percent of Net Asset Value	10.90%
C000059814 | Commercial Services & Supplies
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000059814 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000059814 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000059814 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000059814 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000059814 | Trading Companies & Distributors
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000059814 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	4%
C000059814 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000059814 | Life Sciences Tools & Services
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000059814 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	44.10%
C000059814 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.10%
C000059814 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	8.30%
C000059814 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(6.40%)
C000059815 | Software
Holdings [Line Items]
Percent of Net Asset Value	10.90%
C000059815 | Commercial Services & Supplies
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000059815 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000059815 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000059815 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000059815 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000059815 | Trading Companies & Distributors
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000059815 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	4%
C000059815 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000059815 | Life Sciences Tools & Services
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000059815 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	44.10%
C000059815 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.10%
C000059815 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	8.30%
C000059815 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(6.40%)
C000033348 | American Funds Asset Allocation Fund, 1, , 0
Holdings [Line Items]
Percent of Net Asset Value	100%
C000033350 | American Funds The Bond Fund of America, 1, , 0
Holdings [Line Items]
Percent of Net Asset Value	100%
C000033346 | American Funds Global Growth Fund, 1, , 0
Holdings [Line Items]
Percent of Net Asset Value	100%
C000033344 | American Funds Growth Fund, 1, , 0
Holdings [Line Items]
Percent of Net Asset Value	100%
C000046995 | American Funds Growth-Income Fund, 1, , 0
Holdings [Line Items]
Percent of Net Asset Value	100%
C000014754 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000014754 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000014754 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	61.40%
C000014754 | Banks
Holdings [Line Items]
Percent of Net Asset Value	10.60%
C000014754 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000014754 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000014754 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000014754 | Consumer Finance
Holdings [Line Items]
Percent of Net Asset Value	3%
C000014754 | Passenger Airlines
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000014754 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000014754 | Media
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000014754 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11.70%
C000014754 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(7.40%)
C000014754 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	56.20%
C000014754 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000014754 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	9.10%
C000014754 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	7.30%
C000014754 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	7.10%
C000014754 | Loan Participation
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000014754 | Foreign Government Security
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000014754 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000014724 | Software
Holdings [Line Items]
Percent of Net Asset Value	5%
C000014724 | Commercial Services & Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000014724 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014724 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000014724 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	50.40%
C000014724 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	8.10%
C000014724 | Food Products
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014724 | Consumer Staples Distribution & Retail
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000014724 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000014724 | Household Products
Holdings [Line Items]
Percent of Net Asset Value	4%
C000014724 | Beverages
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000014724 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.40%
C000014724 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	2%
C000014724 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.40%)
C000014725 | Software
Holdings [Line Items]
Percent of Net Asset Value	5%
C000014725 | Commercial Services & Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000014725 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014725 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000014725 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	50.40%
C000014725 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	8.10%
C000014725 | Food Products
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014725 | Consumer Staples Distribution & Retail
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000014725 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000014725 | Household Products
Holdings [Line Items]
Percent of Net Asset Value	4%
C000014725 | Beverages
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000014725 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.40%
C000014725 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	2%
C000014725 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.40%)
C000014727 | Software
Holdings [Line Items]
Percent of Net Asset Value	5%
C000014727 | Commercial Services & Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000014727 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014727 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000014727 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	50.40%
C000014727 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	8.10%
C000014727 | Food Products
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014727 | Consumer Staples Distribution & Retail
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000014727 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000014727 | Household Products
Holdings [Line Items]
Percent of Net Asset Value	4%
C000014727 | Beverages
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000014727 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.40%
C000014727 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	2%
C000014727 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.40%)
C000014751 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000014751 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	9.10%
C000014751 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	42.30%
C000014751 | Banks
Holdings [Line Items]
Percent of Net Asset Value	11.90%
C000014751 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000014751 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000014751 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000014751 | Media
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000014751 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4%
C000014751 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000014751 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000014751 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	94.80%
C000014751 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000014751 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000014751 | Master Limited Partnership
Holdings [Line Items]
Percent of Net Asset Value	1%
C000014752 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000014752 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	9.10%
C000014752 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	42.30%
C000014752 | Banks
Holdings [Line Items]
Percent of Net Asset Value	11.90%
C000014752 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000014752 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000014752 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000014752 | Media
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000014752 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4%
C000014752 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000014752 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000014752 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	94.80%
C000014752 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000014752 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000014752 | Master Limited Partnership
Holdings [Line Items]
Percent of Net Asset Value	1%
C000014753 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000014753 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	9.10%
C000014753 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	42.30%
C000014753 | Banks
Holdings [Line Items]
Percent of Net Asset Value	11.90%
C000014753 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000014753 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000014753 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000014753 | Media
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000014753 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4%
C000014753 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000014753 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000014753 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	94.80%
C000014753 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000014753 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000014753 | Master Limited Partnership
Holdings [Line Items]
Percent of Net Asset Value	1%
C000154836 | BlackRock Global Allocation VI Fund, I, , 0
Holdings [Line Items]
Percent of Net Asset Value	100%
C000154836 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	6.10%
C000154836 | Alternative Assets
Holdings [Line Items]
Percent of Net Asset Value	93.90%
C000060396 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	38.10%
C000060396 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	16.30%
C000060396 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	13.40%
C000060396 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	8%
C000060396 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000060396 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000060396 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5%
C000060396 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000060396 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	1%
C000060396 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000060396 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	86.10%
C000060396 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	13.90%
C000060397 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	38.10%
C000060397 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	16.30%
C000060397 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	13.40%
C000060397 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	8%
C000060397 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000060397 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000060397 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5%
C000060397 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000060397 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	1%
C000060397 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000060397 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	86.10%
C000060397 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	13.90%
C000244891 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	38.10%
C000244891 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	16.30%
C000244891 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	13.40%
C000244891 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	8%
C000244891 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000244891 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000244891 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5%
C000244891 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000244891 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	1%
C000244891 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000244891 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	86.10%
C000244891 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	13.90%
C000060405 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	20.10%
C000060405 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9%
C000060405 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	8.10%
C000060405 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	20.50%
C000060405 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000060405 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000060405 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	18.30%
C000060405 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000060405 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000060405 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	10.10%
C000060405 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000060405 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000060405 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	45.90%
C000060405 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	54.10%
C000060404 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	20.10%
C000060404 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9%
C000060404 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	8.10%
C000060404 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	20.50%
C000060404 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000060404 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000060404 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	18.30%
C000060404 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000060404 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000060404 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	10.10%
C000060404 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000060404 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000060404 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	45.90%
C000060404 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	54.10%
C000244895 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	20.10%
C000244895 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9%
C000244895 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	8.10%
C000244895 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	20.50%
C000244895 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000244895 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000244895 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	18.30%
C000244895 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000244895 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000244895 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	10.10%
C000244895 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000244895 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000244895 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	45.90%
C000244895 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	54.10%
C000060400 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	31%
C000060400 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.60%
C000060400 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000060400 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	14.90%
C000060400 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000060400 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000060400 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000060400 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000060400 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2%
C000060400 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3%
C000060400 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1%
C000060400 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000060400 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	67.10%
C000060400 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	32.90%
C000060401 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	31%
C000060401 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.60%
C000060401 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000060401 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	14.90%
C000060401 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000060401 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000060401 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000060401 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000060401 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2%
C000060401 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3%
C000060401 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1%
C000060401 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000060401 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	67.10%
C000060401 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	32.90%
C000244893 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	31%
C000244893 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.60%
C000244893 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000244893 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	14.90%
C000244893 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000244893 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000244893 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000244893 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000244893 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2%
C000244893 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3%
C000244893 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1%
C000244893 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000244893 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	67.10%
C000244893 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	32.90%
C000060408 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000060408 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000060408 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000060408 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	32%
C000060408 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000060408 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	24.10%
C000060408 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000060408 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000060408 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	15.10%
C000060408 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000060408 | Nationwide Inflation-Protected Securities Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000060408 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000060408 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	16.60%
C000060408 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	83.40%
C000060409 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000060409 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000060409 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000060409 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	32%
C000060409 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000060409 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	24.10%
C000060409 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000060409 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000060409 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	15.10%
C000060409 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000060409 | Nationwide Inflation-Protected Securities Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000060409 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000060409 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	16.60%
C000060409 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	83.40%
C000244897 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000244897 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000244897 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000244897 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	32%
C000244897 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000244897 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	24.10%
C000244897 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000244897 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000244897 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	15.10%
C000244897 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000244897 | Nationwide Inflation-Protected Securities Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000244897 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000244897 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	16.60%
C000244897 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	83.40%
C000139947 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	22%
C000139947 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000139947 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000139947 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	21.50%
C000139947 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4%
C000139947 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000139947 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	17%
C000139947 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000139947 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000139947 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000139947 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000139947 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000139947 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	43.90%
C000139947 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	48.90%
C000125905 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	22%
C000125905 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000125905 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000125905 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	21.50%
C000125905 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4%
C000125905 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000125905 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	17%
C000125905 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000125905 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000125905 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000125905 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000125905 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000125905 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	43.90%
C000125905 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	48.90%
C000139946 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	27.60%
C000139946 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.50%
C000139946 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000139946 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	18.40%
C000139946 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000139946 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000139946 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	14.90%
C000139946 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000139946 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000139946 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000139946 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000139946 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	8.10%
C000139946 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	52.70%
C000139946 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	39.20%
C000125904 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	27.60%
C000125904 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.50%
C000125904 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000125904 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	18.40%
C000125904 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000125904 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000125904 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	14.90%
C000125904 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000125904 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000125904 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000125904 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000125904 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	8.10%
C000125904 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	52.70%
C000125904 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	39.20%
C000060402 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	26.10%
C000060402 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.30%
C000060402 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000060402 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	17.10%
C000060402 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000060402 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	3%
C000060402 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	16.30%
C000060402 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000060402 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000060402 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000060402 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000060402 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000060402 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	56.70%
C000060402 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	43.30%
C000060403 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	26.10%
C000060403 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.30%
C000060403 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000060403 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	17.10%
C000060403 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000060403 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	3%
C000060403 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	16.30%
C000060403 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000060403 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000060403 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000060403 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000060403 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000060403 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	56.70%
C000060403 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	43.30%
C000244894 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	26.10%
C000244894 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.30%
C000244894 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000244894 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	17.10%
C000244894 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000244894 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	3%
C000244894 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	16.30%
C000244894 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000244894 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000244894 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000244894 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000244894 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000244894 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	56.70%
C000244894 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	43.30%
C000060398 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	33.40%
C000060398 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	14.40%
C000060398 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000060398 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	12.20%
C000060398 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000060398 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000060398 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000060398 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000060398 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000060398 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.10%)
C000060398 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	76.60%
C000060398 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	23.50%
C000060399 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	33.40%
C000060399 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	14.40%
C000060399 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000060399 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	12.20%
C000060399 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000060399 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000060399 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000060399 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000060399 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000060399 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.10%)
C000060399 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	76.60%
C000060399 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	23.50%
C000244892 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	33.40%
C000244892 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	14.40%
C000244892 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000244892 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	12.20%
C000244892 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000244892 | Nationwide International Small Cap Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000244892 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000244892 | NVIT GS Small Cap Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000244892 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000244892 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.10%)
C000244892 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	76.60%
C000244892 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	23.50%
C000060406 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	16%
C000060406 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.30%
C000060406 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.10%
C000060406 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	24.40%
C000060406 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000060406 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	19.30%
C000060406 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000060406 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	12.30%
C000060406 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000060406 | Nationwide Inflation-Protected Securities Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000060406 | Other
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000060406 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.10%)
C000060406 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	35.70%
C000060406 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	64.40%
C000060407 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	16%
C000060407 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.30%
C000060407 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.10%
C000060407 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	24.40%
C000060407 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000060407 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	19.30%
C000060407 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000060407 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	12.30%
C000060407 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000060407 | Nationwide Inflation-Protected Securities Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000060407 | Other
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000060407 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.10%)
C000060407 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	35.70%
C000060407 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	64.40%
C000244896 | NVIT GS Large Cap Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	16%
C000244896 | NVIT U.S. 130/30 Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.30%
C000244896 | NVIT GS International Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.10%
C000244896 | NVIT Core Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	24.40%
C000244896 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000244896 | NVIT BNY Mellon Core Plus Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	19.30%
C000244896 | Nationwide Bond Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000244896 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	12.30%
C000244896 | NVIT DoubleLine Total Return Tactical Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000244896 | Nationwide Inflation-Protected Securities Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000244896 | Other
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000244896 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.10%)
C000244896 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	35.70%
C000244896 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	64.40%
C000059803 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000059803 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000059803 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	72%
C000059803 | Banks
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000059803 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000059803 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000059803 | Consumer Finance
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000059803 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000059803 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000059803 | Diversified Telecommunication Services
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000059803 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	1%
C000059803 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000059803 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(3.20%)
C000059803 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	44.70%
C000059803 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000059803 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	31.30%
C000059803 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000059803 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	8.40%
C000059803 | Foreign Government Security
Holdings [Line Items]
Percent of Net Asset Value	3%
C000059803 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000059804 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000059804 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000059804 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	72%
C000059804 | Banks
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000059804 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000059804 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000059804 | Consumer Finance
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000059804 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000059804 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000059804 | Diversified Telecommunication Services
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000059804 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	1%
C000059804 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000059804 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(3.20%)
C000059804 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	44.70%
C000059804 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000059804 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	31.30%
C000059804 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000059804 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	8.40%
C000059804 | Foreign Government Security
Holdings [Line Items]
Percent of Net Asset Value	3%
C000059804 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000112230 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000112230 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000112230 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	72%
C000112230 | Banks
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000112230 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000112230 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000112230 | Consumer Finance
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000112230 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000112230 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000112230 | Diversified Telecommunication Services
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000112230 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	1%
C000112230 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000112230 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(3.20%)
C000112230 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	44.70%
C000112230 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000112230 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	31.30%
C000112230 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000112230 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	8.40%
C000112230 | Foreign Government Security
Holdings [Line Items]
Percent of Net Asset Value	3%
C000112230 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000059805 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000059805 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000059805 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	72%
C000059805 | Banks
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000059805 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000059805 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000059805 | Consumer Finance
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000059805 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000059805 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000059805 | Diversified Telecommunication Services
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000059805 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	1%
C000059805 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000059805 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(3.20%)
C000059805 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	44.70%
C000059805 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000059805 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	31.30%
C000059805 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000059805 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	8.40%
C000059805 | Foreign Government Security
Holdings [Line Items]
Percent of Net Asset Value	3%
C000059805 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000074474 | Software
Holdings [Line Items]
Percent of Net Asset Value	9.80%
C000074474 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	10.70%
C000074474 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000074474 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	48.60%
C000074474 | Banks
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000074474 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000074474 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3%
C000074474 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000074474 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000074474 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	6%
C000074474 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000074474 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	88.50%
C000074474 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000074474 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000074474 | Short-Term Investment
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000074472 | Software
Holdings [Line Items]
Percent of Net Asset Value	9.80%
C000074472 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	10.70%
C000074472 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000074472 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	48.60%
C000074472 | Banks
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000074472 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000074472 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3%
C000074472 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000074472 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000074472 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	6%
C000074472 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000074472 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	88.50%
C000074472 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000074472 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000074472 | Short-Term Investment
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000074469 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000074469 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000074469 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	46.60%
C000074469 | Banks
Holdings [Line Items]
Percent of Net Asset Value	9.80%
C000074469 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000074469 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000074469 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000074469 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000074469 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000074469 | Diversified Telecommunication Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000074469 | Metals & Mining
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000074469 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	89%
C000074469 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000074469 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.30%)
C000074469 | Short-Term Investment
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000074470 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000074470 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000074470 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	46.60%
C000074470 | Banks
Holdings [Line Items]
Percent of Net Asset Value	9.80%
C000074470 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000074470 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000074470 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000074470 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000074470 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000074470 | Diversified Telecommunication Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000074470 | Metals & Mining
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000074470 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	89%
C000074470 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000074470 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.30%)
C000074470 | Short-Term Investment
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000220662 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000220662 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000220662 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	46.60%
C000220662 | Banks
Holdings [Line Items]
Percent of Net Asset Value	9.80%
C000220662 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000220662 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000220662 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000220662 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000220662 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000220662 | Diversified Telecommunication Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000220662 | Metals & Mining
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000220662 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	89%
C000220662 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000220662 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.30%)
C000220662 | Short-Term Investment
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000220661 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000220661 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000220661 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	46.60%
C000220661 | Banks
Holdings [Line Items]
Percent of Net Asset Value	9.80%
C000220661 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000220661 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000220661 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000220661 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000220661 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000220661 | Diversified Telecommunication Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000220661 | Metals & Mining
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000220661 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	89%
C000220661 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000220661 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.30%)
C000220661 | Short-Term Investment
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000139944 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000139944 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000139944 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	1%
C000139944 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	86.50%
C000139944 | Banks
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000139944 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000139944 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000139944 | Consumer Finance
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000139944 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000139944 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000139944 | Diversified Telecommunication Services
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000139944 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000139944 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(4.00%)
C000139944 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	24.80%
C000139944 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	25.40%
C000139944 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000139944 | Foreign Government Security
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000139944 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	42.70%
C000139944 | Supranational
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000139944 | Municipal Bond
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000139944 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000033502 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000033502 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000033502 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	1%
C000033502 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	86.50%
C000033502 | Banks
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000033502 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000033502 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000033502 | Consumer Finance
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000033502 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000033502 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000033502 | Diversified Telecommunication Services
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000033502 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000033502 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(4.00%)
C000033502 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	24.80%
C000033502 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	25.40%
C000033502 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000033502 | Foreign Government Security
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000033502 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	42.70%
C000033502 | Supranational
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000033502 | Municipal Bond
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000033502 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000059800 | Software
Holdings [Line Items]
Percent of Net Asset Value	10.60%
C000059800 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000059800 | Life Sciences Tools & Services
Holdings [Line Items]
Percent of Net Asset Value	11%
C000059800 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	24.70%
C000059800 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000059800 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	7.50%
C000059800 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000059800 | IT Services
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000059800 | Specialty Retail
Holdings [Line Items]
Percent of Net Asset Value	5%
C000059800 | Electronic Equipment, Instruments & Components
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000059800 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000059800 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	96.50%
C000059800 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000059801 | Software
Holdings [Line Items]
Percent of Net Asset Value	10.60%
C000059801 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000059801 | Life Sciences Tools & Services
Holdings [Line Items]
Percent of Net Asset Value	11%
C000059801 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	24.70%
C000059801 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000059801 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	7.50%
C000059801 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000059801 | IT Services
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000059801 | Specialty Retail
Holdings [Line Items]
Percent of Net Asset Value	5%
C000059801 | Electronic Equipment, Instruments & Components
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000059801 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000059801 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	96.50%
C000059801 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000074475 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	17.80%
C000074475 | Japan
Holdings [Line Items]
Percent of Net Asset Value	23.90%
C000074475 | United States
Holdings [Line Items]
Percent of Net Asset Value	12.90%
C000074475 | France
Holdings [Line Items]
Percent of Net Asset Value	12.20%
C000074475 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	10.90%
C000074475 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000074475 | Germany
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000074475 | Canada
Holdings [Line Items]
Percent of Net Asset Value	4%
C000074475 | Israel
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000074475 | Spain
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000074475 | Ireland
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000074475 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.40%
C000074475 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000074475 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.70%)
C000220664 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	17.80%
C000220664 | Japan
Holdings [Line Items]
Percent of Net Asset Value	23.90%
C000220664 | United States
Holdings [Line Items]
Percent of Net Asset Value	12.90%
C000220664 | France
Holdings [Line Items]
Percent of Net Asset Value	12.20%
C000220664 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	10.90%
C000220664 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000220664 | Germany
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000220664 | Canada
Holdings [Line Items]
Percent of Net Asset Value	4%
C000220664 | Israel
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000220664 | Spain
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000220664 | Ireland
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000220664 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.40%
C000220664 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000220664 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.70%)
C000220663 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	17.80%
C000220663 | Japan
Holdings [Line Items]
Percent of Net Asset Value	23.90%
C000220663 | United States
Holdings [Line Items]
Percent of Net Asset Value	12.90%
C000220663 | France
Holdings [Line Items]
Percent of Net Asset Value	12.20%
C000220663 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	10.90%
C000220663 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000220663 | Germany
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000220663 | Canada
Holdings [Line Items]
Percent of Net Asset Value	4%
C000220663 | Israel
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000220663 | Spain
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000220663 | Ireland
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000220663 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.40%
C000220663 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000220663 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.70%)
C000059797 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000059797 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000059797 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	77.40%
C000059797 | Banks
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000059797 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000059797 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000059797 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000059797 | Food Products
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000059797 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000059797 | Ground Transportation
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000059797 | Tobacco
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000059797 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000059797 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.80%)
C000059797 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	34.80%
C000059797 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000059797 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	26.40%
C000059797 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000059797 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	8.80%
C000059797 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	25.20%
C000059797 | Municipal Bond
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000059797 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000059798 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000059798 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000059798 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	77.40%
C000059798 | Banks
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000059798 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000059798 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000059798 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000059798 | Food Products
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000059798 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000059798 | Ground Transportation
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000059798 | Tobacco
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000059798 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000059798 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.80%)
C000059798 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	34.80%
C000059798 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000059798 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	26.40%
C000059798 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000059798 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	8.80%
C000059798 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	25.20%
C000059798 | Municipal Bond
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000059798 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000059799 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000059799 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000059799 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	77.40%
C000059799 | Banks
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000059799 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000059799 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000059799 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000059799 | Food Products
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000059799 | Aerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000059799 | Ground Transportation
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000059799 | Tobacco
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000059799 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000059799 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.80%)
C000059799 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	34.80%
C000059799 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000059799 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	26.40%
C000059799 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000059799 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	8.80%
C000059799 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	25.20%
C000059799 | Municipal Bond
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000059799 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000192909 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000192909 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000192909 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	94.80%
C000192909 | Banks
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000192909 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000192909 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000192909 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000192909 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	12.40%
C000192909 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	19.10%
C000192909 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	19.10%
C000192909 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000192909 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	16.20%
C000192909 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	22.10%
C000192909 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000192910 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000192910 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000192910 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	94.80%
C000192910 | Banks
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000192910 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000192910 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000192910 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000192910 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	12.40%
C000192910 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	19.10%
C000192910 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	19.10%
C000192910 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000192910 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	16.20%
C000192910 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	22.10%
C000192910 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000192911 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000192911 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000192911 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	94.80%
C000192911 | Banks
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000192911 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000192911 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000192911 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000192911 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	12.40%
C000192911 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	19.10%
C000192911 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	19.10%
C000192911 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000192911 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	16.20%
C000192911 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	22.10%
C000192911 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000168057 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000168057 | China
Holdings [Line Items]
Percent of Net Asset Value	22.70%
C000168057 | India
Holdings [Line Items]
Percent of Net Asset Value	20.60%
C000168057 | Taiwan
Holdings [Line Items]
Percent of Net Asset Value	20.30%
C000168057 | South Korea
Holdings [Line Items]
Percent of Net Asset Value	15.40%
C000168057 | Hong Kong
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000168057 | Thailand
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000168057 | Indonesia
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000168057 | Brazil
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000168057 | Poland
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000168057 | Greece
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000168057 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	100%
C000168057 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000014756 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000014756 | China
Holdings [Line Items]
Percent of Net Asset Value	22.70%
C000014756 | India
Holdings [Line Items]
Percent of Net Asset Value	20.60%
C000014756 | Taiwan
Holdings [Line Items]
Percent of Net Asset Value	20.30%
C000014756 | South Korea
Holdings [Line Items]
Percent of Net Asset Value	15.40%
C000014756 | Hong Kong
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000014756 | Thailand
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000014756 | Indonesia
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000014756 | Brazil
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000014756 | Poland
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000014756 | Greece
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000014756 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	100%
C000014756 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000014757 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000014757 | China
Holdings [Line Items]
Percent of Net Asset Value	22.70%
C000014757 | India
Holdings [Line Items]
Percent of Net Asset Value	20.60%
C000014757 | Taiwan
Holdings [Line Items]
Percent of Net Asset Value	20.30%
C000014757 | South Korea
Holdings [Line Items]
Percent of Net Asset Value	15.40%
C000014757 | Hong Kong
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000014757 | Thailand
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000014757 | Indonesia
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000014757 | Brazil
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000014757 | Poland
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000014757 | Greece
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000014757 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	100%
C000014757 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000075321 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000075321 | China
Holdings [Line Items]
Percent of Net Asset Value	22.70%
C000075321 | India
Holdings [Line Items]
Percent of Net Asset Value	20.60%
C000075321 | Taiwan
Holdings [Line Items]
Percent of Net Asset Value	20.30%
C000075321 | South Korea
Holdings [Line Items]
Percent of Net Asset Value	15.40%
C000075321 | Hong Kong
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000075321 | Thailand
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000075321 | Indonesia
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000075321 | Brazil
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000075321 | Poland
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000075321 | Greece
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000075321 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	100%
C000075321 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000014749 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	36.90%
C000014749 | Technology
Holdings [Line Items]
Percent of Net Asset Value	11.60%
C000014749 | Insurance - P&C
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000014749 | Automotive
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000014749 | Cable Satellite
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000014749 | Midstream
Holdings [Line Items]
Percent of Net Asset Value	6.10%
C000014749 | Gaming
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000014749 | Packaging
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014749 | Healthcare
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000014749 | Consumer Cyclical Services
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000014749 | Building Materials
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000014749 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000014749 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	95.60%
C000014696 | Other
Holdings [Line Items]
Percent of Net Asset Value	68.40%
C000014696 | FFCB, , 07/02/2026, 3.14
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000014696 | FFCB, , 03/16/2032, 2.38
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000014696 | U.S. Treasury Bonds, , 08/15/2046, 2.25
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000014696 | Resolution Funding Corp., , 01/15/2030, 0
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000014696 | FNMA UMBS, , 04/01/2052, 2
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000014696 | Private Export Funding Corp., , 11/15/2024, 1.75
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000014696 | FNMA, MX, 09/25/2042, 2.5
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000014696 | FNMA UMBS, , 12/01/2047, 3
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000014696 | FHLMC Multifamily Structured Pass-Through Certificates, A2, 05/25/2033, 4.2
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000014696 | State of Israel AID Bond, , 09/18/2033, 5.5
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000014696 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.60%)
C000014696 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	5%
C000014696 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	7.80%
C000014696 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	49.10%
C000014696 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000014696 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000014696 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	13%
C000014696 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	16.30%
C000014697 | Other
Holdings [Line Items]
Percent of Net Asset Value	68.40%
C000014697 | FFCB, , 07/02/2026, 3.14
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000014697 | FFCB, , 03/16/2032, 2.38
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000014697 | U.S. Treasury Bonds, , 08/15/2046, 2.25
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000014697 | Resolution Funding Corp., , 01/15/2030, 0
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000014697 | FNMA UMBS, , 04/01/2052, 2
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000014697 | Private Export Funding Corp., , 11/15/2024, 1.75
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000014697 | FNMA, MX, 09/25/2042, 2.5
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000014697 | FNMA UMBS, , 12/01/2047, 3
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000014697 | FHLMC Multifamily Structured Pass-Through Certificates, A2, 05/25/2033, 4.2
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000014697 | State of Israel AID Bond, , 09/18/2033, 5.5
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000014697 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.60%)
C000014697 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	5%
C000014697 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	7.80%
C000014697 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	49.10%
C000014697 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000014697 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000014697 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	13%
C000014697 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	16.30%
C000014699 | Other
Holdings [Line Items]
Percent of Net Asset Value	68.40%
C000014699 | FFCB, , 07/02/2026, 3.14
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000014699 | FFCB, , 03/16/2032, 2.38
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000014699 | U.S. Treasury Bonds, , 08/15/2046, 2.25
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000014699 | Resolution Funding Corp., , 01/15/2030, 0
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000014699 | FNMA UMBS, , 04/01/2052, 2
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000014699 | Private Export Funding Corp., , 11/15/2024, 1.75
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000014699 | FNMA, MX, 09/25/2042, 2.5
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000014699 | FNMA UMBS, , 12/01/2047, 3
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000014699 | FHLMC Multifamily Structured Pass-Through Certificates, A2, 05/25/2033, 4.2
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000014699 | State of Israel AID Bond, , 09/18/2033, 5.5
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000014699 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.60%)
C000014699 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	5%
C000014699 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	7.80%
C000014699 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	49.10%
C000014699 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000014699 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000014699 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	13%
C000014699 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	16.30%
C000139942 | Other
Holdings [Line Items]
Percent of Net Asset Value	68.40%
C000139942 | FFCB, , 07/02/2026, 3.14
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000139942 | FFCB, , 03/16/2032, 2.38
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000139942 | U.S. Treasury Bonds, , 08/15/2046, 2.25
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000139942 | Resolution Funding Corp., , 01/15/2030, 0
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000139942 | FNMA UMBS, , 04/01/2052, 2
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000139942 | Private Export Funding Corp., , 11/15/2024, 1.75
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000139942 | FNMA, MX, 09/25/2042, 2.5
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000139942 | FNMA UMBS, , 12/01/2047, 3
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000139942 | FHLMC Multifamily Structured Pass-Through Certificates, A2, 05/25/2033, 4.2
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000139942 | State of Israel AID Bond, , 09/18/2033, 5.5
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000139942 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.60%)
C000139942 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	5%
C000139942 | Collateralized Mortgage Obligation
Holdings [Line Items]
Percent of Net Asset Value	7.80%
C000139942 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	49.10%
C000139942 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000139942 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000139942 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	13%
C000139942 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	16.30%
C000014718 | Other
Holdings [Line Items]
Percent of Net Asset Value	83.60%
C000014718 | U.S. Treasury Bills, , 07/05/2024, 5.18
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000014718 | U.S. Treasury Notes, , 04/30/2026, 5.4552024
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000014718 | FHLB, , 09/27/2024, 5.32
Holdings [Line Items]
Percent of Net Asset Value	2%
C000014718 | U.S. Treasury Bills, , 09/05/2024, 5.32
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000014718 | U.S. Treasury Bills, , 08/15/2024, 5.24
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000014718 | U.S. Treasury Bills, , 08/01/2024, 5.25
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000014718 | U.S. Treasury Bills, , 08/29/2024, 5.3
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014718 | FHLB, , 10/08/2024, 5.35
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014718 | U.S. Treasury Notes, , 07/31/2024, 5.342202
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014718 | U.S. Treasury Notes, , 10/31/2025, 5.475204
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014718 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	42.50%
C000014718 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(1.70%)
C000014718 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	37.80%
C000014718 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	21.40%
C000079439 | Other
Holdings [Line Items]
Percent of Net Asset Value	83.60%
C000079439 | U.S. Treasury Bills, , 07/05/2024, 5.18
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000079439 | U.S. Treasury Notes, , 04/30/2026, 5.4552024
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000079439 | FHLB, , 09/27/2024, 5.32
Holdings [Line Items]
Percent of Net Asset Value	2%
C000079439 | U.S. Treasury Bills, , 09/05/2024, 5.32
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000079439 | U.S. Treasury Bills, , 08/15/2024, 5.24
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000079439 | U.S. Treasury Bills, , 08/01/2024, 5.25
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000079439 | U.S. Treasury Bills, , 08/29/2024, 5.3
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000079439 | FHLB, , 10/08/2024, 5.35
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000079439 | U.S. Treasury Notes, , 07/31/2024, 5.342202
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000079439 | U.S. Treasury Notes, , 10/31/2025, 5.475204
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000079439 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	42.50%
C000079439 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(1.70%)
C000079439 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	37.80%
C000079439 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	21.40%
C000014719 | Other
Holdings [Line Items]
Percent of Net Asset Value	83.60%
C000014719 | U.S. Treasury Bills, , 07/05/2024, 5.18
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000014719 | U.S. Treasury Notes, , 04/30/2026, 5.4552024
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000014719 | FHLB, , 09/27/2024, 5.32
Holdings [Line Items]
Percent of Net Asset Value	2%
C000014719 | U.S. Treasury Bills, , 09/05/2024, 5.32
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000014719 | U.S. Treasury Bills, , 08/15/2024, 5.24
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000014719 | U.S. Treasury Bills, , 08/01/2024, 5.25
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000014719 | U.S. Treasury Bills, , 08/29/2024, 5.3
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014719 | FHLB, , 10/08/2024, 5.35
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014719 | U.S. Treasury Notes, , 07/31/2024, 5.342202
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014719 | U.S. Treasury Notes, , 10/31/2025, 5.475204
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014719 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	42.50%
C000014719 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(1.70%)
C000014719 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	37.80%
C000014719 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	21.40%
C000014720 | Other
Holdings [Line Items]
Percent of Net Asset Value	83.60%
C000014720 | U.S. Treasury Bills, , 07/05/2024, 5.18
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000014720 | U.S. Treasury Notes, , 04/30/2026, 5.4552024
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000014720 | FHLB, , 09/27/2024, 5.32
Holdings [Line Items]
Percent of Net Asset Value	2%
C000014720 | U.S. Treasury Bills, , 09/05/2024, 5.32
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000014720 | U.S. Treasury Bills, , 08/15/2024, 5.24
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000014720 | U.S. Treasury Bills, , 08/01/2024, 5.25
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000014720 | U.S. Treasury Bills, , 08/29/2024, 5.3
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014720 | FHLB, , 10/08/2024, 5.35
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014720 | U.S. Treasury Notes, , 07/31/2024, 5.342202
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014720 | U.S. Treasury Notes, , 10/31/2025, 5.475204
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014720 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	42.50%
C000014720 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(1.70%)
C000014720 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	37.80%
C000014720 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	21.40%
C000204950 | Other
Holdings [Line Items]
Percent of Net Asset Value	83.60%
C000204950 | U.S. Treasury Bills, , 07/05/2024, 5.18
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000204950 | U.S. Treasury Notes, , 04/30/2026, 5.4552024
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000204950 | FHLB, , 09/27/2024, 5.32
Holdings [Line Items]
Percent of Net Asset Value	2%
C000204950 | U.S. Treasury Bills, , 09/05/2024, 5.32
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000204950 | U.S. Treasury Bills, , 08/15/2024, 5.24
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000204950 | U.S. Treasury Bills, , 08/01/2024, 5.25
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000204950 | U.S. Treasury Bills, , 08/29/2024, 5.3
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000204950 | FHLB, , 10/08/2024, 5.35
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000204950 | U.S. Treasury Notes, , 07/31/2024, 5.342202
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000204950 | U.S. Treasury Notes, , 10/31/2025, 5.475204
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000204950 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	42.50%
C000204950 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(1.70%)
C000204950 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	37.80%
C000204950 | U.S. Government Agency Security
Holdings [Line Items]
Percent of Net Asset Value	21.40%
C000214896 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000214896 | China
Holdings [Line Items]
Percent of Net Asset Value	25.50%
C000214896 | India
Holdings [Line Items]
Percent of Net Asset Value	18.60%
C000214896 | Taiwan
Holdings [Line Items]
Percent of Net Asset Value	19.90%
C000214896 | South Korea
Holdings [Line Items]
Percent of Net Asset Value	12.80%
C000214896 | Thailand
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000214896 | Indonesia
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000214896 | Brazil
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000214896 | Saudi Arabia
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000214896 | South Africa
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000214896 | Mexico
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000214896 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000214896 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000214896 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.10%)
C000214897 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	10.70%
C000214897 | Japan
Holdings [Line Items]
Percent of Net Asset Value	23.50%
C000214897 | United States
Holdings [Line Items]
Percent of Net Asset Value	10.30%
C000214897 | France
Holdings [Line Items]
Percent of Net Asset Value	7.10%
C000214897 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	7.60%
C000214897 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000214897 | Germany
Holdings [Line Items]
Percent of Net Asset Value	9.70%
C000214897 | Australia
Holdings [Line Items]
Percent of Net Asset Value	8.40%
C000214897 | Switzerland
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000214897 | Denmark
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000214897 | Sweden
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000214897 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.20%
C000214897 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000214897 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	1%
C000214898 | Software
Holdings [Line Items]
Percent of Net Asset Value	10.20%
C000214898 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000214898 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	9.90%
C000214898 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	45.80%
C000214898 | Banks
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000214898 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000214898 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3%
C000214898 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000214898 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000214898 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000214898 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000214898 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99.60%
C000214898 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000214898 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(1.80%)
C000214899 | Software
Holdings [Line Items]
Percent of Net Asset Value	6%
C000214899 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	7.30%
C000214899 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000214899 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000214899 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	56.50%
C000214899 | Banks
Holdings [Line Items]
Percent of Net Asset Value	8%
C000214899 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000214899 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000214899 | Specialty Retail
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000214899 | Electronic Equipment, Instruments & Components
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000214899 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000214899 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99.30%
C000214899 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	15.70%
C000214899 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(15.00%)
C000014702 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	31.80%
C000014702 | Japan
Holdings [Line Items]
Percent of Net Asset Value	13.90%
C000014702 | United States
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000014702 | France
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000014702 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000014702 | Germany
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000014702 | Canada
Holdings [Line Items]
Percent of Net Asset Value	7%
C000014702 | China
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000014702 | India
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014702 | Taiwan
Holdings [Line Items]
Percent of Net Asset Value	6.40%
C000014702 | Switzerland
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000014702 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99%
C000014702 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000014702 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000033125 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	31.80%
C000033125 | Japan
Holdings [Line Items]
Percent of Net Asset Value	13.90%
C000033125 | United States
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000033125 | France
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000033125 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000033125 | Germany
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000033125 | Canada
Holdings [Line Items]
Percent of Net Asset Value	7%
C000033125 | China
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000033125 | India
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000033125 | Taiwan
Holdings [Line Items]
Percent of Net Asset Value	6.40%
C000033125 | Switzerland
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000033125 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99%
C000033125 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000033125 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000139945 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	14.90%
C000139945 | Japan
Holdings [Line Items]
Percent of Net Asset Value	22.40%
C000139945 | United States
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000139945 | France
Holdings [Line Items]
Percent of Net Asset Value	9.30%
C000139945 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000139945 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000139945 | Germany
Holdings [Line Items]
Percent of Net Asset Value	8.40%
C000139945 | Australia
Holdings [Line Items]
Percent of Net Asset Value	7.40%
C000139945 | Switzerland
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000139945 | Denmark
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000139945 | Sweden
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000139945 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.60%
C000139945 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000139945 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.40%)
C000033506 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	14.90%
C000033506 | Japan
Holdings [Line Items]
Percent of Net Asset Value	22.40%
C000033506 | United States
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000033506 | France
Holdings [Line Items]
Percent of Net Asset Value	9.30%
C000033506 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000033506 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000033506 | Germany
Holdings [Line Items]
Percent of Net Asset Value	8.40%
C000033506 | Australia
Holdings [Line Items]
Percent of Net Asset Value	7.40%
C000033506 | Switzerland
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000033506 | Denmark
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000033506 | Sweden
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000033506 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.60%
C000033506 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000033506 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.40%)
C000033509 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	14.90%
C000033509 | Japan
Holdings [Line Items]
Percent of Net Asset Value	22.40%
C000033509 | United States
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000033509 | France
Holdings [Line Items]
Percent of Net Asset Value	9.30%
C000033509 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000033509 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000033509 | Germany
Holdings [Line Items]
Percent of Net Asset Value	8.40%
C000033509 | Australia
Holdings [Line Items]
Percent of Net Asset Value	7.40%
C000033509 | Switzerland
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000033509 | Denmark
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000033509 | Sweden
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000033509 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.60%
C000033509 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000033509 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.40%)
C000033505 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	14.90%
C000033505 | Japan
Holdings [Line Items]
Percent of Net Asset Value	22.40%
C000033505 | United States
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000033505 | France
Holdings [Line Items]
Percent of Net Asset Value	9.30%
C000033505 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000033505 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000033505 | Germany
Holdings [Line Items]
Percent of Net Asset Value	8.40%
C000033505 | Australia
Holdings [Line Items]
Percent of Net Asset Value	7.40%
C000033505 | Switzerland
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000033505 | Denmark
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000033505 | Sweden
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000033505 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.60%
C000033505 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000033505 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.40%)
C000014736 | Software
Holdings [Line Items]
Percent of Net Asset Value	9.10%
C000014736 | Commercial Services & Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000014736 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000014736 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	8%
C000014736 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000014736 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014736 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000014736 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000014736 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	45%
C000014736 | Electronic Equipment, Instruments & Components
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000014736 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000014736 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.60%
C000014736 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11%
C000014736 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(8.60%)
C000014737 | Software
Holdings [Line Items]
Percent of Net Asset Value	9.10%
C000014737 | Commercial Services & Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000014737 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000014737 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	8%
C000014737 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000014737 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014737 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000014737 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000014737 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	45%
C000014737 | Electronic Equipment, Instruments & Components
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000014737 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000014737 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.60%
C000014737 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11%
C000014737 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(8.60%)
C000014704 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000014704 | Other
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000014704 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	37.60%
C000014704 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	19.80%
C000014704 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	13.10%
C000014704 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000014704 | NVIT Mid Cap Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.40%
C000014704 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000014704 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000014704 | iShares Core S&P Small-Cap ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1%
C000014704 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000014704 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.10%)
C000014704 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	86.50%
C000014704 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	12.90%
C000014704 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000112221 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000112221 | Other
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000112221 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	37.60%
C000112221 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	19.80%
C000112221 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	13.10%
C000112221 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.70%
C000112221 | NVIT Mid Cap Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.40%
C000112221 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000112221 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000112221 | iShares Core S&P Small-Cap ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1%
C000112221 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000112221 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.10%)
C000112221 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	86.50%
C000112221 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	12.90%
C000112221 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000074482 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000074482 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000074482 | Other
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000074482 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	22%
C000074482 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	8.80%
C000074482 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000074482 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	28.60%
C000074482 | NVIT Mid Cap Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000074482 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	8.40%
C000074482 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000074482 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000074482 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000074482 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	45.80%
C000074482 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	47.70%
C000074482 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000112234 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000112234 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000112234 | Other
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000112234 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	22%
C000112234 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	8.80%
C000112234 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000112234 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	28.60%
C000112234 | NVIT Mid Cap Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000112234 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	8.40%
C000112234 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000112234 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000112234 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000112234 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	45.80%
C000112234 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	47.70%
C000112234 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000074480 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000074480 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2%
C000074480 | Other
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000074480 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	32.70%
C000074480 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	13.10%
C000074480 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.50%
C000074480 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	19%
C000074480 | NVIT Mid Cap Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000074480 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000074480 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000074480 | iShares 20+ Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000074480 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000074480 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	67.30%
C000074480 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	30.20%
C000074480 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000112233 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000112233 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2%
C000112233 | Other
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000112233 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	32.70%
C000112233 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	13.10%
C000112233 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.50%
C000112233 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	19%
C000112233 | NVIT Mid Cap Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000112233 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000112233 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000112233 | iShares 20+ Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000112233 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000112233 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	67.30%
C000112233 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	30.20%
C000112233 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000014706 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.90%
C000014706 | Nationwide Inflation-Protected Securities Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	5%
C000014706 | Other
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000014706 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	8.30%
C000014706 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000014706 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3%
C000014706 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	38.40%
C000014706 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	11%
C000014706 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000014706 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000014706 | iShares U.S. Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000014706 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.10%)
C000014706 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	16.10%
C000014706 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	75.50%
C000014706 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000112222 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.90%
C000112222 | Nationwide Inflation-Protected Securities Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	5%
C000112222 | Other
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000112222 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	8.30%
C000112222 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000112222 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3%
C000112222 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	38.40%
C000112222 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	11%
C000112222 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000112222 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000112222 | iShares U.S. Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000112222 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(0.10%)
C000112222 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	16.10%
C000112222 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	75.50%
C000112222 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000139949 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000139949 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000139949 | Other
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000139949 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	23.60%
C000139949 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000139949 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	8%
C000139949 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	28.60%
C000139949 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.60%
C000139949 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000139949 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	6%
C000139949 | iShares U.S. Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000139949 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	7.30%
C000139949 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	43.70%
C000139949 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	43.40%
C000139949 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000125907 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000125907 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000125907 | Other
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000125907 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	23.60%
C000125907 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000125907 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	8%
C000125907 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	28.60%
C000125907 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.60%
C000125907 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000125907 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	6%
C000125907 | iShares U.S. Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000125907 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	7.30%
C000125907 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	43.70%
C000125907 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	43.40%
C000125907 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000139948 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000139948 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000139948 | Other
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000139948 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	29.40%
C000139948 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	10.80%
C000139948 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	10%
C000139948 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	24%
C000139948 | NVIT Mid Cap Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000139948 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000139948 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	3%
C000139948 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000139948 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000139948 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	52.60%
C000139948 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	35%
C000139948 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000125906 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000125906 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000125906 | Other
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000125906 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	29.40%
C000125906 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	10.80%
C000125906 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	10%
C000125906 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	24%
C000125906 | NVIT Mid Cap Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000125906 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000125906 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	3%
C000125906 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000125906 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000125906 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	52.60%
C000125906 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	35%
C000125906 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000014708 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000014708 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2%
C000014708 | Other
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000014708 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	27.90%
C000014708 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.10%
C000014708 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	10%
C000014708 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	23.10%
C000014708 | NVIT Mid Cap Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000014708 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000014708 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	3%
C000014708 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014708 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000014708 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	56.80%
C000014708 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	38.10%
C000014708 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000112223 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000112223 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2%
C000112223 | Other
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000112223 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	27.90%
C000112223 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	11.10%
C000112223 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	10%
C000112223 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	23.10%
C000112223 | NVIT Mid Cap Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000112223 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000112223 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	3%
C000112223 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000112223 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000112223 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	56.80%
C000112223 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	38.10%
C000112223 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014710 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000014710 | Other
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000014710 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	34.60%
C000014710 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	17%
C000014710 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	12.20%
C000014710 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	15%
C000014710 | NVIT Mid Cap Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000014710 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000014710 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000014710 | iShares Core S&P Small-Cap ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000014710 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000014710 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000014710 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	77%
C000014710 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	21.80%
C000014710 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000112224 | NVIT GS Emerging Markets Equity Insights Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000112224 | Other
Holdings [Line Items]
Percent of Net Asset Value	1.50%
C000112224 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	34.60%
C000112224 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	17%
C000112224 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	12.20%
C000112224 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	15%
C000112224 | NVIT Mid Cap Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000112224 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000112224 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000112224 | iShares Core S&P Small-Cap ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000112224 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000112224 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000112224 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	77%
C000112224 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	21.80%
C000112224 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000014712 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000014712 | Nationwide Inflation-Protected Securities Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000014712 | Other
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000014712 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	16.70%
C000014712 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000014712 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6%
C000014712 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	31%
C000014712 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000014712 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	4%
C000014712 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000014712 | iShares U.S. Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000014712 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000014712 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	34.90%
C000014712 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	56.90%
C000014712 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000112225 | NVIT Loomis Short Term Bond Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000112225 | Nationwide Inflation-Protected Securities Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000112225 | Other
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000112225 | Nationwide Fundamental All Cap Equity Portfolio, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	16.70%
C000112225 | NVIT International Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000112225 | NVIT J.P. Morgan U.S. Equity Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	6%
C000112225 | NVIT Bond Index Fund, Y, , 0
Holdings [Line Items]
Percent of Net Asset Value	31%
C000112225 | Nationwide BNY Mellon Core Plus Bond ESG Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000112225 | iShares 7-10 Year Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	4%
C000112225 | Fidelity Investments Money Market Government Portfolio - Institutional Class, , , 5.25
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000112225 | iShares U.S. Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000112225 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0%
C000112225 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	34.90%
C000112225 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	56.90%
C000112225 | Money Market Fund
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000203213 | iShares U.S. Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000203213 | iShares Core U.S. Aggregate Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	42.80%
C000203213 | iShares Core 1-5 Year USD Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	12.90%
C000203213 | iShares Core Total USD Bond Market ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	8.60%
C000203213 | iShares MBS ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	8.60%
C000203213 | iShares Core 10+ Year USD Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000203213 | Cantor Fitzgerald & Co., , 7/1/2024, 5.38
Holdings [Line Items]
Percent of Net Asset Value	14.30%
C000203213 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	16.70%
C000203213 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(16.60%)
C000203213 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	99.90%
C000203214 | iShares U.S. Treasury Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000203214 | iShares Core U.S. Aggregate Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	42.80%
C000203214 | iShares Core 1-5 Year USD Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	12.90%
C000203214 | iShares Core Total USD Bond Market ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	8.60%
C000203214 | iShares MBS ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	8.60%
C000203214 | iShares Core 10+ Year USD Bond ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000203214 | Cantor Fitzgerald & Co., , 7/1/2024, 5.38
Holdings [Line Items]
Percent of Net Asset Value	14.30%
C000203214 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	16.70%
C000203214 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(16.60%)
C000203214 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	99.90%
C000203211 | Other
Holdings [Line Items]
Percent of Net Asset Value	17.20%
C000203211 | iShares Core S&P Small-Cap ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000203211 | iShares Core S&P Total U.S. Stock Market ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	24.20%
C000203211 | iShares Core S&P Mid-Cap ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	15.40%
C000203211 | iShares Core MSCI International Developed Markets ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	11.40%
C000203211 | iShares Core MSCI EAFE ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	9.70%
C000203211 | iShares U.S. Equity Factor ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000203211 | iShares Core S&P 500 ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000203211 | iShares MSCI USA Momentum Factor ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000203211 | iShares MSCI USA Quality Factor ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000203211 | iShares U.S. Small-Cap Equity Factor ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000203211 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	16%
C000203211 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(15.80%)
C000203211 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	99.80%
C000203212 | Other
Holdings [Line Items]
Percent of Net Asset Value	17.20%
C000203212 | iShares Core S&P Small-Cap ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000203212 | iShares Core S&P Total U.S. Stock Market ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	24.20%
C000203212 | iShares Core S&P Mid-Cap ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	15.40%
C000203212 | iShares Core MSCI International Developed Markets ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	11.40%
C000203212 | iShares Core MSCI EAFE ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	9.70%
C000203212 | iShares U.S. Equity Factor ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000203212 | iShares Core S&P 500 ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000203212 | iShares MSCI USA Momentum Factor ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000203212 | iShares MSCI USA Quality Factor ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000203212 | iShares U.S. Small-Cap Equity Factor ETF, , , 0
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000203212 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	16%
C000203212 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(15.80%)
C000203212 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	99.80%
C000234864 | Software
Holdings [Line Items]
Percent of Net Asset Value	22.80%
C000234864 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	31.60%
C000234864 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000234864 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000234864 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	14.10%
C000234864 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	18.40%
C000234864 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	2%
C000234864 | IT Services
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000234864 | Electronic Equipment, Instruments & Components
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000234864 | Communications Equipment
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000234864 | Entertainment
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000234864 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.20%
C000234864 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000234865 | Software
Holdings [Line Items]
Percent of Net Asset Value	13.30%
C000234865 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	13.10%
C000234865 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	7%
C000234865 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	4%
C000234865 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	26.80%
C000234865 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000234865 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000234865 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000234865 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000234865 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	6.80%
C000234865 | Specialty Retail
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000234865 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.10%
C000234865 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000234866 | Software
Holdings [Line Items]
Percent of Net Asset Value	17.70%
C000234866 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	18.80%
C000234866 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000234866 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	21.80%
C000234866 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000234866 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000234866 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000234866 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000234866 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	7.10%
C000234866 | Entertainment
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000234866 | Electrical Equipment
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000234866 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	96.10%
C000234866 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000210766 | Software
Holdings [Line Items]
Percent of Net Asset Value	12.80%
C000210766 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000210766 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	13%
C000210766 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	34.30%
C000210766 | Banks
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000210766 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000210766 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	3%
C000210766 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000210766 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000210766 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000210766 | Specialty Retail
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000210766 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000210766 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000210767 | Software
Holdings [Line Items]
Percent of Net Asset Value	12.80%
C000210767 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000210767 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	13%
C000210767 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	34.30%
C000210767 | Banks
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000210767 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000210767 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	3%
C000210767 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000210767 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000210767 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000210767 | Specialty Retail
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000210767 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000210767 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000234867 | Software
Holdings [Line Items]
Percent of Net Asset Value	26.10%
C000234867 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	35.30%
C000234867 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	6.90%
C000234867 | Media
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000234867 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000234867 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000234867 | IT Services
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000234867 | Ground Transportation
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000234867 | Communications Equipment
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000234867 | Entertainment
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000234867 | Automobiles
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000234867 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.90%
C000234867 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000059820 | Software
Holdings [Line Items]
Percent of Net Asset Value	14.10%
C000059820 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000059820 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000059820 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000059820 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	38.80%
C000059820 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000059820 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000059820 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	7.10%
C000059820 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000059820 | Ground Transportation
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000059820 | Professional Services
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000059820 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000059820 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000059821 | Software
Holdings [Line Items]
Percent of Net Asset Value	14.10%
C000059821 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000059821 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000059821 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000059821 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	38.80%
C000059821 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000059821 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000059821 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	7.10%
C000059821 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000059821 | Ground Transportation
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000059821 | Professional Services
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000059821 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000059821 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000059811 | Software
Holdings [Line Items]
Percent of Net Asset Value	23.70%
C000059811 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000059811 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000059811 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000059811 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	32.80%
C000059811 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000059811 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000059811 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	5%
C000059811 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000059811 | Ground Transportation
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000059811 | Professional Services
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000059811 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.10%
C000059811 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000059811 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.00%)
C000059812 | Software
Holdings [Line Items]
Percent of Net Asset Value	23.70%
C000059812 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000059812 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	5.90%
C000059812 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000059812 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	32.80%
C000059812 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000059812 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000059812 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	5%
C000059812 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000059812 | Ground Transportation
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000059812 | Professional Services
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000059812 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.10%
C000059812 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000059812 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.00%)
C000059825 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000059825 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	69%
C000059825 | Banks
Holdings [Line Items]
Percent of Net Asset Value	7.40%
C000059825 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000059825 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000059825 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000059825 | Consumer Finance
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000059825 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	3%
C000059825 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000059825 | Specialty Retail
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000059825 | Multi-Utilities
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000059825 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	5%
C000059825 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(4.00%)
C000059825 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	46.80%
C000059825 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000059825 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000059825 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	30.10%
C000059825 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	18.80%
C000059826 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000059826 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	69%
C000059826 | Banks
Holdings [Line Items]
Percent of Net Asset Value	7.40%
C000059826 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000059826 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000059826 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000059826 | Consumer Finance
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000059826 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	3%
C000059826 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000059826 | Specialty Retail
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000059826 | Multi-Utilities
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000059826 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	5%
C000059826 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(4.00%)
C000059826 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	46.80%
C000059826 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000059826 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000059826 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	30.10%
C000059826 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	18.80%
C000059827 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000059827 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	69%
C000059827 | Banks
Holdings [Line Items]
Percent of Net Asset Value	7.40%
C000059827 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000059827 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000059827 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000059827 | Consumer Finance
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000059827 | Electric Utilities
Holdings [Line Items]
Percent of Net Asset Value	3%
C000059827 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000059827 | Specialty Retail
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000059827 | Multi-Utilities
Holdings [Line Items]
Percent of Net Asset Value	1.90%
C000059827 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	5%
C000059827 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(4.00%)
C000059827 | Corporate Bond
Holdings [Line Items]
Percent of Net Asset Value	46.80%
C000059827 | Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000059827 | Commercial Mortgage-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	1.70%
C000059827 | Asset-Backed Security
Holdings [Line Items]
Percent of Net Asset Value	30.10%
C000059827 | U.S. Treasury Obligation
Holdings [Line Items]
Percent of Net Asset Value	18.80%
C000138646 | American Funds Growth Fund, 1, , 0
Holdings [Line Items]
Percent of Net Asset Value	30.20%
C000138646 | American Balanced Fund, R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	29.90%
C000138646 | American Funds Washington Mutual Investors Fund, 1, , 0
Holdings [Line Items]
Percent of Net Asset Value	20%
C000138646 | Bond Fund of America (The), R6, , 0
Holdings [Line Items]
Percent of Net Asset Value	14.90%
C000138646 | American Funds U.S. Government Securities Fund, 1, , 0
Holdings [Line Items]
Percent of Net Asset Value	5%
C000138646 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	8.40%
C000138646 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	46%
C000138646 | Fixed Income Fund
Holdings [Line Items]
Percent of Net Asset Value	18.20%
C000138646 | Balanced Fund
Holdings [Line Items]
Percent of Net Asset Value	27.40%
C000138647 | American Funds Growth-Income Fund, 1, , 0
Holdings [Line Items]
Percent of Net Asset Value	100%
C000138647 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000138647 | Equity Fund
Holdings [Line Items]
Percent of Net Asset Value	94.40%
C000014721 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000014721 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000014721 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000014721 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000014721 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	64.40%
C000014721 | Banks
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000014721 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000014721 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000014721 | Specialty Retail
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000014721 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4%
C000014721 | Building Products
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000014721 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99%
C000014721 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11.60%
C000014721 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(10.60%)
C000014722 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000014722 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000014722 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000014722 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000014722 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	64.40%
C000014722 | Banks
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000014722 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000014722 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000014722 | Specialty Retail
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000014722 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4%
C000014722 | Building Products
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000014722 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99%
C000014722 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11.60%
C000014722 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(10.60%)
C000034093 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000034093 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000034093 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000034093 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000034093 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	64.40%
C000034093 | Banks
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000034093 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000034093 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000034093 | Specialty Retail
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000034093 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4%
C000034093 | Building Products
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000034093 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99%
C000034093 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11.60%
C000034093 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(10.60%)
C000014739 | Software
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000014739 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	3%
C000014739 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000014739 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	55.60%
C000014739 | Banks
Holdings [Line Items]
Percent of Net Asset Value	7.50%
C000014739 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000014739 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000014739 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000014739 | Professional Services
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000014739 | Building Products
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000014739 | Household Durables
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000014739 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.50%
C000014739 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	10.30%
C000014739 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(7.80%)
C000014740 | Software
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000014740 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	3%
C000014740 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000014740 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	55.60%
C000014740 | Banks
Holdings [Line Items]
Percent of Net Asset Value	7.50%
C000014740 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000014740 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000014740 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000014740 | Professional Services
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000014740 | Building Products
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000014740 | Household Durables
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000014740 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.50%
C000014740 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	10.30%
C000014740 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(7.80%)
C000014742 | Software
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000014742 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	3%
C000014742 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000014742 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	55.60%
C000014742 | Banks
Holdings [Line Items]
Percent of Net Asset Value	7.50%
C000014742 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000014742 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000014742 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000014742 | Professional Services
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000014742 | Building Products
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000014742 | Household Durables
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000014742 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.50%
C000014742 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	10.30%
C000014742 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(7.80%)
C000014743 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	10.40%
C000014743 | Japan
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000014743 | United States
Holdings [Line Items]
Percent of Net Asset Value	83.60%
C000014743 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000014743 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	0.10%
C000014743 | Canada
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014743 | Israel
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000014743 | Thailand
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000014743 | Puerto Rico
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000014743 | Monaco
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000014743 | Norway
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000014743 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99%
C000014743 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11.50%
C000014743 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(10.50%)
C000014744 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	10.40%
C000014744 | Japan
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000014744 | United States
Holdings [Line Items]
Percent of Net Asset Value	83.60%
C000014744 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000014744 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	0.10%
C000014744 | Canada
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014744 | Israel
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000014744 | Thailand
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000014744 | Puerto Rico
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000014744 | Monaco
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000014744 | Norway
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000014744 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99%
C000014744 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11.50%
C000014744 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(10.50%)
C000014746 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	10.40%
C000014746 | Japan
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000014746 | United States
Holdings [Line Items]
Percent of Net Asset Value	83.60%
C000014746 | United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000014746 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	0.10%
C000014746 | Canada
Holdings [Line Items]
Percent of Net Asset Value	1.30%
C000014746 | Israel
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000014746 | Thailand
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000014746 | Puerto Rico
Holdings [Line Items]
Percent of Net Asset Value	1.40%
C000014746 | Monaco
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000014746 | Norway
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000014746 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99%
C000014746 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11.50%
C000014746 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(10.50%)
C000059808 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	10.90%
C000059808 | Japan
Holdings [Line Items]
Percent of Net Asset Value	19.60%
C000059808 | United States
Holdings [Line Items]
Percent of Net Asset Value	10.80%
C000059808 | France
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000059808 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	12.70%
C000059808 | Germany
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000059808 | Spain
Holdings [Line Items]
Percent of Net Asset Value	4%
C000059808 | Hong Kong
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000059808 | Australia
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000059808 | Switzerland
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000059808 | Denmark
Holdings [Line Items]
Percent of Net Asset Value	7.10%
C000059808 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000059808 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000059808 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(1.10%)
C000059809 | Other Countries
Holdings [Line Items]
Percent of Net Asset Value	10.90%
C000059809 | Japan
Holdings [Line Items]
Percent of Net Asset Value	19.60%
C000059809 | United States
Holdings [Line Items]
Percent of Net Asset Value	10.80%
C000059809 | France
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000059809 | Netherlands
Holdings [Line Items]
Percent of Net Asset Value	12.70%
C000059809 | Germany
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000059809 | Spain
Holdings [Line Items]
Percent of Net Asset Value	4%
C000059809 | Hong Kong
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000059809 | Australia
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000059809 | Switzerland
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000059809 | Denmark
Holdings [Line Items]
Percent of Net Asset Value	7.10%
C000059809 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000059809 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	1.60%
C000059809 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(1.10%)
C000059822 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000059822 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000059822 | Specialized REITs
Holdings [Line Items]
Percent of Net Asset Value	26.30%
C000059822 | Residential REITs
Holdings [Line Items]
Percent of Net Asset Value	18.60%
C000059822 | Retail REITs
Holdings [Line Items]
Percent of Net Asset Value	13.90%
C000059822 | Industrial REITs
Holdings [Line Items]
Percent of Net Asset Value	13%
C000059822 | Health Care REITs
Holdings [Line Items]
Percent of Net Asset Value	11.60%
C000059822 | Diversified REITs
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000059822 | Office REITs
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000059822 | Real Estate Management & Development
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000059822 | Hotel & Resort REITs
Holdings [Line Items]
Percent of Net Asset Value	2%
C000059822 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.20%
C000059822 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000059823 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000059823 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000059823 | Specialized REITs
Holdings [Line Items]
Percent of Net Asset Value	26.30%
C000059823 | Residential REITs
Holdings [Line Items]
Percent of Net Asset Value	18.60%
C000059823 | Retail REITs
Holdings [Line Items]
Percent of Net Asset Value	13.90%
C000059823 | Industrial REITs
Holdings [Line Items]
Percent of Net Asset Value	13%
C000059823 | Health Care REITs
Holdings [Line Items]
Percent of Net Asset Value	11.60%
C000059823 | Diversified REITs
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000059823 | Office REITs
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000059823 | Real Estate Management & Development
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000059823 | Hotel & Resort REITs
Holdings [Line Items]
Percent of Net Asset Value	2%
C000059823 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.20%
C000059823 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	1.80%
C000033129 | Software
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000033129 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	11.50%
C000033129 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000033129 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	44.80%
C000033129 | Banks
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000033129 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000033129 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000033129 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000033129 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000033129 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	6.40%
C000033129 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000033129 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.70%
C000033129 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000033129 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.90%)
C000033130 | Software
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000033130 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	11.50%
C000033130 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000033130 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	44.80%
C000033130 | Banks
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000033130 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000033130 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000033130 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000033130 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000033130 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	6.40%
C000033130 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000033130 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.70%
C000033130 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000033130 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.90%)
C000014735 | Software
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000014735 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	11.50%
C000014735 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000014735 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	44.80%
C000014735 | Banks
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000014735 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000014735 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000014735 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000014735 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000014735 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	6.40%
C000014735 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000014735 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.70%
C000014735 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000014735 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.90%)
C000034094 | Software
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000034094 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	11.50%
C000034094 | Capital Markets
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000034094 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	44.80%
C000034094 | Banks
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000034094 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000034094 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000034094 | Pharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000034094 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000034094 | Interactive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	6.40%
C000034094 | Broadline Retail
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000034094 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	98.70%
C000034094 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000034094 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(2.90%)
C000033510 | Software
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000033510 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000033510 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000033510 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000033510 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	57.90%
C000033510 | Banks
Holdings [Line Items]
Percent of Net Asset Value	8.30%
C000033510 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000033510 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000033510 | Electronic Equipment, Instruments & Components
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000033510 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000033510 | Energy Equipment & Services
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000033510 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99.40%
C000033510 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11.10%
C000033510 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(10.50%)
C000033512 | Software
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000033512 | Biotechnology
Holdings [Line Items]
Percent of Net Asset Value	7.90%
C000033512 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000033512 | Health Care Providers & Services
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000033512 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	57.90%
C000033512 | Banks
Holdings [Line Items]
Percent of Net Asset Value	8.30%
C000033512 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000033512 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.50%
C000033512 | Electronic Equipment, Instruments & Components
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000033512 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000033512 | Energy Equipment & Services
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000033512 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	99.40%
C000033512 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11.10%
C000033512 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(10.50%)
C000216457 | Software
Holdings [Line Items]
Percent of Net Asset Value	12.30%
C000216457 | Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000216457 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000216457 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	38%
C000216457 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.70%
C000216457 | Financial Services
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000216457 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000216457 | Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Net Asset Value	7.80%
C000216457 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000216457 | Ground Transportation
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000216457 | Professional Services
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000216457 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	97.90%
C000216457 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000059817 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000059817 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000059817 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	51.80%
C000059817 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	8.60%
C000059817 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000059817 | Consumer Staples Distribution & Retail
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000059817 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000059817 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000059817 | Ground Transportation
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000059817 | Professional Services
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000059817 | Containers & Packaging
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000059817 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	96.60%
C000059817 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000059817 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(8.40%)
C000059818 | Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000059818 | Health Care Equipment & Supplies
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000059818 | Other Industries
Holdings [Line Items]
Percent of Net Asset Value	51.80%
C000059818 | Insurance
Holdings [Line Items]
Percent of Net Asset Value	8.60%
C000059818 | Oil, Gas & Consumable Fuels
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000059818 | Consumer Staples Distribution & Retail
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000059818 | Chemicals
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000059818 | Machinery
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000059818 | Ground Transportation
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000059818 | Professional Services
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000059818 | Containers & Packaging
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000059818 | Common Stock
Holdings [Line Items]
Percent of Net Asset Value	96.60%
C000059818 | Repurchase Agreement
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000059818 | Other Asset
Holdings [Line Items]
Percent of Net Asset Value	(8.40%)