| Shareholder Report | 6 Months Ended |
| Jun. 30, 2024 USD ($) $ / shares |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | MML Series Investment Fund II |
| Entity Central Index Key | 0001317146 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jun. 30, 2024 |
| Initial Class | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Blend Fund |
| Class Name | Initial Class |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Blend 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Initial Class
$23
0.44% |
| Expenses Paid, Amount | $ 23 |
| Expense Ratio, Percent | 0.44% |
| Net Assets | $ 687,900,000 |
| Holdings Count | $ / shares | 11 |
| Investment Company Portfolio Turnover | 4% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$687.9
Total Number of Portfolio Holdings (includes derivative positions, if any)
11
Portfolio Turnover Rate
4% |
| Holdings [Text Block] | Sectors (% of Total Investments)
Equity Funds
58.7%
Fixed Income Funds
37.9% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Service Class | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Blend Fund |
| Class Name | Service Class |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Blend 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Service Class
$36
0.69% |
| Expenses Paid, Amount | $ 36 |
| Expense Ratio, Percent | 0.69% |
| Net Assets | $ 687,900,000 |
| Holdings Count | $ / shares | 11 |
| Investment Company Portfolio Turnover | 4% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$687.9
Total Number of Portfolio Holdings (includes derivative positions, if any)
11
Portfolio Turnover Rate
4% |
| Holdings [Text Block] | Sectors (% of Total Investments)
Equity Funds
58.7%
Fixed Income Funds
37.9% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Class II | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Dynamic Bond Fund |
| Class Name | Class II |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Dynamic 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class II
$28
0.57% |
| Expenses Paid, Amount | $ 28 |
| Expense Ratio, Percent | 0.57% |
| Net Assets | $ 207,100,000 |
| Holdings Count | $ / shares | 1,036 |
| Investment Company Portfolio Turnover | 84% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$207.1
Total Number of Portfolio Holdings (includes derivative positions, if any)
1,036
Portfolio Turnover Rate
84% |
| Holdings [Text Block] | Portfolio Characteristics (% of Total Investments)
Corporate Debt
35.8%
U.S. Government Agency Obligations and Instrumentalities
34.2%
Non-U.S. Government Agency Obligations
13.8%
Sovereign Debt Obligations
5.7%
U.S. Treasury Obligations
5.2%
Bank Loans
2.7%
Repurchase Agreement
1.1%
Investment of Cash Collateral from Securities Loaned
1.0%
U.S. Treasury Bill
0.4%
Purchased Options
0.1% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Service Class I | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Dynamic Bond Fund |
| Class Name | Service Class I |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Dynamic 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Service Class I
$40
0.82% |
| Expenses Paid, Amount | $ 40 |
| Expense Ratio, Percent | 0.82% |
| Net Assets | $ 207,100,000 |
| Holdings Count | $ / shares | 1,036 |
| Investment Company Portfolio Turnover | 84% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$207.1
Total Number of Portfolio Holdings (includes derivative positions, if any)
1,036
Portfolio Turnover Rate
84% |
| Holdings [Text Block] | Portfolio Characteristics (% of Total Investments)
Corporate Debt
35.8%
U.S. Government Agency Obligations and Instrumentalities
34.2%
Non-U.S. Government Agency Obligations
13.8%
Sovereign Debt Obligations
5.7%
U.S. Treasury Obligations
5.2%
Bank Loans
2.7%
Repurchase Agreement
1.1%
Investment of Cash Collateral from Securities Loaned
1.0%
U.S. Treasury Bill
0.4%
Purchased Options
0.1% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Initial Class | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Equity Fund |
| Class Name | Initial Class |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Initial Class
$22
0.43% |
| Expenses Paid, Amount | $ 22 |
| Expense Ratio, Percent | 0.43% |
| Net Assets | $ 831,300,000 |
| Holdings Count | $ / shares | 247 |
| Investment Company Portfolio Turnover | 55% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$831.3
Total Number of Portfolio Holdings (includes derivative positions, if any)
247
Portfolio Turnover Rate
55% |
| Holdings [Text Block] | Largest Holdings (% of Total Investments)
JP Morgan Chase & Co.
5.1%
Bank of America Corp.
2.9%
AbbVie, Inc.
2.9%
Johnson & Johnson
2.7%
Chevron Corp.
2.6%
Wells Fargo & Co.
2.0%
Lowe’s Cos., Inc.
1.9%
Verizon Communications, Inc.
1.8%
Caterpillar, Inc.
1.7%
Philip Morris International, Inc.
1.6%
Sectors (% of Total Investments)
Financials
29.8%
Health Care
15.5%
Industrials
11.7%
Energy
9.5%
Consumer Discretionary
8.2%
Consumer Staples
6.4%
Communication Services
5.3%
Information Technology
5.1%
Utilities
3.7%
Materials
3.1%
Domestic Equity
1.1%
Real Estate
0.1% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Service Class | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Equity Fund |
| Class Name | Service Class |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Service Class
$35
0.68% |
| Expenses Paid, Amount | $ 35 |
| Expense Ratio, Percent | 0.68% |
| Net Assets | $ 831,300,000 |
| Holdings Count | $ / shares | 247 |
| Investment Company Portfolio Turnover | 55% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$831.3
Total Number of Portfolio Holdings (includes derivative positions, if any)
247
Portfolio Turnover Rate
55% |
| Holdings [Text Block] | Largest Holdings (% of Total Investments)
JP Morgan Chase & Co.
5.1%
Bank of America Corp.
2.9%
AbbVie, Inc.
2.9%
Johnson & Johnson
2.7%
Chevron Corp.
2.6%
Wells Fargo & Co.
2.0%
Lowe’s Cos., Inc.
1.9%
Verizon Communications, Inc.
1.8%
Caterpillar, Inc.
1.7%
Philip Morris International, Inc.
1.6%
Sectors (% of Total Investments)
Financials
29.8%
Health Care
15.5%
Industrials
11.7%
Energy
9.5%
Consumer Discretionary
8.2%
Consumer Staples
6.4%
Communication Services
5.3%
Information Technology
5.1%
Utilities
3.7%
Materials
3.1%
Domestic Equity
1.1%
Real Estate
0.1% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Class II | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Equity Rotation Fund |
| Class Name | Class II |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Equity Rotation 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class II
$37
0.73% |
| Expenses Paid, Amount | $ 37 |
| Expense Ratio, Percent | 0.73% |
| Net Assets | $ 54,900,000 |
| Holdings Count | $ / shares | 462 |
| Investment Company Portfolio Turnover | 87% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$54.9
Total Number of Portfolio Holdings (includes derivative positions, if any)
462
Portfolio Turnover Rate
87% |
| Holdings [Text Block] | Largest Holdings (% of Total Investments)
Hewlett Packard Enterprise Co.
1.1%
Synchrony Financial
0.8%
Marathon Oil Corp.
0.7%
Builders FirstSource, Inc.
0.5%
Steel Dynamics, Inc.
0.7%
PulteGroup, Inc.
0.4%
United Airlines Holdings, Inc.
0.6%
Tyson Foods, Inc. Class A
0.6%
Coterra Energy, Inc.
0.4%
Owens Corning
0.5%
Sectors (% of Total Investments)
Financials
21.7%
Consumer Discretionary
16.5%
Industrials
14.9%
Materials
8.4%
Consumer Staples
7.5%
Energy
7.2%
Information Technology
6.3%
Health Care
6.3%
Utilities
4.9%
Communication Services
3.5%
Real Estate
2.6% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Service Class I | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Equity Rotation Fund |
| Class Name | Service Class I |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Equity Rotation 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Service Class I
$49
0.98% |
| Expenses Paid, Amount | $ 49 |
| Expense Ratio, Percent | 0.98% |
| Net Assets | $ 54,900,000 |
| Holdings Count | $ / shares | 462 |
| Investment Company Portfolio Turnover | 87% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$54.9
Total Number of Portfolio Holdings (includes derivative positions, if any)
462
Portfolio Turnover Rate
87% |
| Holdings [Text Block] | Largest Holdings (% of Total Investments)
Hewlett Packard Enterprise Co.
1.1%
Synchrony Financial
0.8%
Marathon Oil Corp.
0.7%
Builders FirstSource, Inc.
0.5%
Steel Dynamics, Inc.
0.7%
PulteGroup, Inc.
0.4%
United Airlines Holdings, Inc.
0.6%
Tyson Foods, Inc. Class A
0.6%
Coterra Energy, Inc.
0.4%
Owens Corning
0.5%
Sectors (% of Total Investments)
Financials
21.7%
Consumer Discretionary
16.5%
Industrials
14.9%
Materials
8.4%
Consumer Staples
7.5%
Energy
7.2%
Information Technology
6.3%
Health Care
6.3%
Utilities
4.9%
Communication Services
3.5%
Real Estate
2.6% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Class II | |
| Shareholder Report [Line Items] | |
| Fund Name | MML High Yield Fund |
| Class Name | Class II |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML High Yield 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class II
$50
0.99% |
| Expenses Paid, Amount | $ 50 |
| Expense Ratio, Percent | 0.99% |
| Net Assets | $ 50,700,000 |
| Holdings Count | $ / shares | 259 |
| Investment Company Portfolio Turnover | 39% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$50.7
Total Number of Portfolio Holdings (includes derivative positions, if any)
259
Portfolio Turnover Rate
39% |
| Holdings [Text Block] | Portfolio Characteristics (% of Total Investments)
Corporate Debt
82.0%
Bank Loans
8.8%
Investment of Cash Collateral from Securities Loaned
4.4%
Commercial Paper
3.8%
Repurchase Agreement
1.0% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Service Class I | |
| Shareholder Report [Line Items] | |
| Fund Name | MML High Yield Fund |
| Class Name | Service Class I |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML High Yield 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Service Class I
$63
1.24% |
| Expenses Paid, Amount | $ 63 |
| Expense Ratio, Percent | 1.24% |
| Net Assets | $ 50,700,000 |
| Holdings Count | $ / shares | 259 |
| Investment Company Portfolio Turnover | 39% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$50.7
Total Number of Portfolio Holdings (includes derivative positions, if any)
259
Portfolio Turnover Rate
39% |
| Holdings [Text Block] | Portfolio Characteristics (% of Total Investments)
Corporate Debt
82.0%
Bank Loans
8.8%
Investment of Cash Collateral from Securities Loaned
4.4%
Commercial Paper
3.8%
Repurchase Agreement
1.0% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Initial Class | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Inflation-Protected and Income Fund |
| Class Name | Initial Class |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Inflation-Protected and 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Initial Class
$30
0.60% |
| Expenses Paid, Amount | $ 30 |
| Expense Ratio, Percent | 0.60% |
| Net Assets | $ 182,200,000 |
| Holdings Count | $ / shares | 182 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$182.2
Total Number of Portfolio Holdings (includes derivative positions, if any)
182
Portfolio Turnover Rate
36% |
| Holdings [Text Block] | Portfolio Characteristics (% of Total Investments)
Non-U.S. Government Agency Obligations
56.1%
U.S. Treasury Obligations
19.9%
Commercial Paper
13.7%
U.S. Government Agency Obligations and Instrumentalities
9.3%
Repurchase Agreement
1.0% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Service Class | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Inflation-Protected and Income Fund |
| Class Name | Service Class |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Inflation-Protected and 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Service Class
$42
0.85% |
| Expenses Paid, Amount | $ 42 |
| Expense Ratio, Percent | 0.85% |
| Net Assets | $ 182,200,000 |
| Holdings Count | $ / shares | 182 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$182.2
Total Number of Portfolio Holdings (includes derivative positions, if any)
182
Portfolio Turnover Rate
36% |
| Holdings [Text Block] | Portfolio Characteristics (% of Total Investments)
Non-U.S. Government Agency Obligations
56.1%
U.S. Treasury Obligations
19.9%
Commercial Paper
13.7%
U.S. Government Agency Obligations and Instrumentalities
9.3%
Repurchase Agreement
1.0% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Class II | |
| Shareholder Report [Line Items] | |
| Fund Name | MML iShares® 60/40 Allocation Fund |
| Class Name | Class II |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML iShares® 60/40 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class II
$24
0.46% |
| Expenses Paid, Amount | $ 24 |
| Expense Ratio, Percent | 0.46% |
| Net Assets | $ 44,700,000 |
| Holdings Count | $ / shares | 13 |
| Investment Company Portfolio Turnover | 4% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$44.7
Total Number of Portfolio Holdings (includes derivative positions, if any)
13
Portfolio Turnover Rate
4% |
| Holdings [Text Block] | Sectors (% of Total Investments)
Equity Funds
58.3%
Fixed Income Funds
38.8% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Service Class I | |
| Shareholder Report [Line Items] | |
| Fund Name | MML iShares® 60/40 Allocation Fund |
| Class Name | Service Class I |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML iShares® 60/40 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Service Class I
$36
0.71% |
| Expenses Paid, Amount | $ 36 |
| Expense Ratio, Percent | 0.71% |
| Net Assets | $ 44,700,000 |
| Holdings Count | $ / shares | 13 |
| Investment Company Portfolio Turnover | 4% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$44.7
Total Number of Portfolio Holdings (includes derivative positions, if any)
13
Portfolio Turnover Rate
4% |
| Holdings [Text Block] | Sectors (% of Total Investments)
Equity Funds
58.3%
Fixed Income Funds
38.8% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Class II | |
| Shareholder Report [Line Items] | |
| Fund Name | MML iShares® 80/20 Allocation Fund |
| Class Name | Class II |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML iShares® 80/20 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class II
$24
0.46% |
| Expenses Paid, Amount | $ 24 |
| Expense Ratio, Percent | 0.46% |
| Net Assets | $ 76,400,000 |
| Holdings Count | $ / shares | 14 |
| Investment Company Portfolio Turnover | 3% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$76.4
Total Number of Portfolio Holdings (includes derivative positions, if any)
14
Portfolio Turnover Rate
3% |
| Holdings [Text Block] | Sectors (% of Total Investments)
Equity Funds
77.5%
Fixed Income Funds
19.3% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Service Class I | |
| Shareholder Report [Line Items] | |
| Fund Name | MML iShares® 80/20 Allocation Fund |
| Class Name | Service Class I |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML iShares® 80/20 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Service Class I
$37
0.71% |
| Expenses Paid, Amount | $ 37 |
| Expense Ratio, Percent | 0.71% |
| Net Assets | $ 76,400,000 |
| Holdings Count | $ / shares | 14 |
| Investment Company Portfolio Turnover | 3% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$76.4
Total Number of Portfolio Holdings (includes derivative positions, if any)
14
Portfolio Turnover Rate
3% |
| Holdings [Text Block] | Sectors (% of Total Investments)
Equity Funds
77.5%
Fixed Income Funds
19.3% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Initial Class | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Managed Bond Fund |
| Class Name | Initial Class |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Managed 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Initial Class
$22
0.45% |
| Expenses Paid, Amount | $ 22 |
| Expense Ratio, Percent | 0.45% |
| Net Assets | $ 626,600,000 |
| Holdings Count | $ / shares | 434 |
| Investment Company Portfolio Turnover | 106% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$626.6
Total Number of Portfolio Holdings (includes derivative positions, if any)
434
Portfolio Turnover Rate
106% |
| Holdings [Text Block] | Portfolio Characteristics (% of Total Investments)
Corporate Debt
33.9%
U.S. Government Agency Obligations and Instrumentalities
26.5%
Non-U.S. Government Agency Obligations
22.5%
Commercial Paper
11.9%
U.S. Treasury Obligations
3.9%
Investment of Cash Collateral from Securities Loaned
0.6%
Repurchase Agreement
0.5%
Sovereign Debt Obligations
0.2% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Service Class | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Managed Bond Fund |
| Class Name | Service Class |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Managed 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Service Class
$35
0.70% |
| Expenses Paid, Amount | $ 35 |
| Expense Ratio, Percent | 0.70% |
| Net Assets | $ 626,600,000 |
| Holdings Count | $ / shares | 434 |
| Investment Company Portfolio Turnover | 106% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$626.6
Total Number of Portfolio Holdings (includes derivative positions, if any)
434
Portfolio Turnover Rate
106% |
| Holdings [Text Block] | Portfolio Characteristics (% of Total Investments)
Corporate Debt
33.9%
U.S. Government Agency Obligations and Instrumentalities
26.5%
Non-U.S. Government Agency Obligations
22.5%
Commercial Paper
11.9%
U.S. Treasury Obligations
3.9%
Investment of Cash Collateral from Securities Loaned
0.6%
Repurchase Agreement
0.5%
Sovereign Debt Obligations
0.2% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Class II | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Short-Duration Bond Fund |
| Class Name | Class II |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Short-Duration 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class II
$30
0.60% |
| Expenses Paid, Amount | $ 30 |
| Expense Ratio, Percent | 0.60% |
| Net Assets | $ 119,400,000 |
| Holdings Count | $ / shares | 283 |
| Investment Company Portfolio Turnover | 34% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$119.4
Total Number of Portfolio Holdings (includes derivative positions, if any)
283
Portfolio Turnover Rate
34% |
| Holdings [Text Block] | Portfolio Characteristics (% of Total Investments)
Corporate Debt
44.8%
Non-U.S. Government Agency Obligations
38.9%
Commercial Paper
12.4%
Repurchase Agreement
1.7%
Investment of Cash Collateral from Securities Loaned
1.6%
U.S. Treasury Obligations
0.6%
U.S. Government Agency Obligations and Instrumentalities
0.0% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Service Class I | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Short-Duration Bond Fund |
| Class Name | Service Class I |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Short-Duration 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Service Class I
$43
0.85% |
| Expenses Paid, Amount | $ 43 |
| Expense Ratio, Percent | 0.85% |
| Net Assets | $ 119,400,000 |
| Holdings Count | $ / shares | 283 |
| Investment Company Portfolio Turnover | 34% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$119.4
Total Number of Portfolio Holdings (includes derivative positions, if any)
283
Portfolio Turnover Rate
34% |
| Holdings [Text Block] | Portfolio Characteristics (% of Total Investments)
Corporate Debt
44.8%
Non-U.S. Government Agency Obligations
38.9%
Commercial Paper
12.4%
Repurchase Agreement
1.7%
Investment of Cash Collateral from Securities Loaned
1.6%
U.S. Treasury Obligations
0.6%
U.S. Government Agency Obligations and Instrumentalities
0.0% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Initial Class | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Small Cap Equity Fund |
| Class Name | Initial Class |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Small 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Initial Class
$36
0.71% |
| Expenses Paid, Amount | $ 36 |
| Expense Ratio, Percent | 0.71% |
| Net Assets | $ 122,400,000 |
| Holdings Count | $ / shares | 100 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$122.4
Total Number of Portfolio Holdings (includes derivative positions, if any)
100
Portfolio Turnover Rate
19% |
| Holdings [Text Block] | Largest Holdings (% of Total Investments)
ADMA Biologics, Inc.
2.1%
Summit Materials, Inc. Class A
1.9%
Atkore, Inc.
1.9%
MACOM Technology Solutions Holdings, Inc.
1.7%
Itron, Inc.
1.7%
AutoNation, Inc.
1.7%
KB Home
1.7%
Zurn Elkay Water Solutions Corp. Class C
1.7%
Korn Ferry
1.5%
PennyMac Financial Services, Inc.
1.5%
Sectors (% of Total Investments)
Industrials
18.8%
Health Care
18.6%
Information Technology
14.2%
Financials
13.9%
Consumer Discretionary
8.7%
Materials
6.6%
Real Estate
6.5%
Energy
5.6%
Consumer Staples
2.7%
Utilities
2.0%
Communication Services
1.0% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Service Class | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Small Cap Equity Fund |
| Class Name | Service Class |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Small 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Service Class
$48
0.96% |
| Expenses Paid, Amount | $ 48 |
| Expense Ratio, Percent | 0.96% |
| Net Assets | $ 122,400,000 |
| Holdings Count | $ / shares | 100 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$122.4
Total Number of Portfolio Holdings (includes derivative positions, if any)
100
Portfolio Turnover Rate
19% |
| Holdings [Text Block] | Largest Holdings (% of Total Investments)
ADMA Biologics, Inc.
2.1%
Summit Materials, Inc. Class A
1.9%
Atkore, Inc.
1.9%
MACOM Technology Solutions Holdings, Inc.
1.7%
Itron, Inc.
1.7%
AutoNation, Inc.
1.7%
KB Home
1.7%
Zurn Elkay Water Solutions Corp. Class C
1.7%
Korn Ferry
1.5%
PennyMac Financial Services, Inc.
1.5%
Sectors (% of Total Investments)
Industrials
18.8%
Health Care
18.6%
Information Technology
14.2%
Financials
13.9%
Consumer Discretionary
8.7%
Materials
6.6%
Real Estate
6.5%
Energy
5.6%
Consumer Staples
2.7%
Utilities
2.0%
Communication Services
1.0% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Class II | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Strategic Emerging Markets Fund |
| Class Name | Class II |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Strategic 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class II
$63
1.25% |
| Expenses Paid, Amount | $ 63 |
| Expense Ratio, Percent | 1.25% |
| Net Assets | $ 45,500,000 |
| Holdings Count | $ / shares | 82 |
| Investment Company Portfolio Turnover | 22% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$45.5
Total Number of Portfolio Holdings (includes derivative positions, if any)
82
Portfolio Turnover Rate
22% |
| Holdings [Text Block] | Largest Holdings (% of Total Investments)
Taiwan Semiconductor Manufacturing Co. Ltd.
12.2%
Tencent Holdings Ltd.
6.4%
Samsung Electronics Co. Ltd.
5.2%
Kotak Mahindra Bank Ltd.
4.8%
H World Group Ltd. ADR
4.2%
Grupo Mexico SAB de CV Series B
3.8%
HDFC Bank Ltd.
3.8%
Fomento Economico Mexicano SAB de CV
2.8%
Tata Consultancy Services Ltd.
2.7%
Pernod Ricard SA
2.1%
Sectors (% of Total Investments)
Information Technology
24.6%
Financials
16.1%
Consumer Discretionary
12.1%
Consumer Staples
9.6%
Communication Services
8.2%
Industrials
6.9%
Health Care
6.3%
Materials
4.9%
Energy
3.5%
Real Estate
2.4%
Largest Countries (% of Total Investments)
China
17.4%
India
16.0%
Taiwan
14.5%
Mexico
10.3%
Republic of Korea
8.1%
Brazil
6.6%
France
4.2%
Japan
2.3%
Portugal
2.2%
Italy
2.0% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Service Class I | |
| Shareholder Report [Line Items] | |
| Fund Name | MML Strategic Emerging Markets Fund |
| Class Name | Service Class I |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML Strategic 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Service Class I
$76
1.50% |
| Expenses Paid, Amount | $ 76 |
| Expense Ratio, Percent | 1.50% |
| Net Assets | $ 45,500,000 |
| Holdings Count | $ / shares | 82 |
| Investment Company Portfolio Turnover | 22% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$45.5
Total Number of Portfolio Holdings (includes derivative positions, if any)
82
Portfolio Turnover Rate
22% |
| Holdings [Text Block] | Largest Holdings (% of Total Investments)
Taiwan Semiconductor Manufacturing Co. Ltd.
12.2%
Tencent Holdings Ltd.
6.4%
Samsung Electronics Co. Ltd.
5.2%
Kotak Mahindra Bank Ltd.
4.8%
H World Group Ltd. ADR
4.2%
Grupo Mexico SAB de CV Series B
3.8%
HDFC Bank Ltd.
3.8%
Fomento Economico Mexicano SAB de CV
2.8%
Tata Consultancy Services Ltd.
2.7%
Pernod Ricard SA
2.1%
Sectors (% of Total Investments)
Information Technology
24.6%
Financials
16.1%
Consumer Discretionary
12.1%
Consumer Staples
9.6%
Communication Services
8.2%
Industrials
6.9%
Health Care
6.3%
Materials
4.9%
Energy
3.5%
Real Estate
2.4%
Largest Countries (% of Total Investments)
China
17.4%
India
16.0%
Taiwan
14.5%
Mexico
10.3%
Republic of Korea
8.1%
Brazil
6.6%
France
4.2%
Japan
2.3%
Portugal
2.2%
Italy
2.0% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Initial Class | |
| Shareholder Report [Line Items] | |
| Fund Name | MML U.S. Government Money Market Fund |
| Class Name | Initial Class |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the MML U.S. 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://www.massmutual.com/product-performance/variable-insurance-funds . You can also request this information by contacting us at 1-888-309-3539 or by sending an email request to fundinfo massmutual.com . |
| Additional Information Phone Number | 1-888-309-3539 |
| Additional Information Email | fundinfo@massmutual.com |
| Additional Information Website | https://www.massmutual.com/product-performance/variable-insurance-funds |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS? This example shows the expenses you would have paid over the past six months, based on a hypothetical $10,000 investment. This table reflects any applicable waivers or expense limitations.
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Initial Class
$26
0.51% |
| Expenses Paid, Amount | $ 26 |
| Expense Ratio, Percent | 0.51% |
| Net Assets | $ 212,700,000 |
| Holdings Count | $ / shares | 16 |
| Investment Company Portfolio Turnover | 0% |
| Additional Fund Statistics [Text Block] | WHAT ARE SOME KEY FUND STATISTICS? (as of June 30, 2024)
Total Net Assets (Millions)
$212.7
Total Number of Portfolio Holdings (includes derivative positions, if any)
16
Portfolio Turnover Rate
0% |
| Holdings [Text Block] | Portfolio Characteristics (% of Total Investments)
Discount Notes
51.7%
U.S. Treasury Bill
36.4%
Repurchase Agreement
11.9% |
| Updated Prospectus Web Address | https://www.massmutual.com/product-performance/variable-insurance-funds |
