v3.26.3
N-6
Dec. 31, 2025
Prospectus:  
Document Type N-6
Entity Registrant Name Massachusetts Mutual Variable Life Separate Account I
Entity Central Index Key 0000836249
Entity Investment Company Type N-6
Document Period End Date Dec. 31, 2025
Amendment Flag false
Item 2. Key Information [Line Items]  
Item 18. Portfolio Companies (N-6) [Text Block]

 

 

Fund Type

 

 

Fund and Adviser/Sub-Adviser

 

 

Current Expenses (expenses/ average assets)

 

 

Average Annual Total Returns

(as of 12/31/2025)

1 Year 5 Year 10 Year
Large Cap Blend MML Focused Equity Fund (Class II)
Adviser: MML Investment Advisers, LLC
Sub-Adviser: J.P. Morgan Investment Management Inc.		 0.77%(*) 7.90% 8.75% 12.51%
International/Global

MML Foreign Fund (Initial Class)

Adviser: MML Investment Advisers, LLC
Sub-Adviser: Putnam Investment Management, LLC

 0.84% 32.60% 9.01% 6.72%
Portfolio Companies [Table Text Block]

 

 

Fund Type

 

 

Fund and Adviser/Sub-Adviser

 

 

Current Expenses (expenses/ average assets)

 

 

Average Annual Total Returns

(as of 12/31/2025)

1 Year 5 Year 10 Year
Large Cap Blend MML Focused Equity Fund (Class II)
Adviser: MML Investment Advisers, LLC
Sub-Adviser: J.P. Morgan Investment Management Inc.		 0.77%(*) 7.90% 8.75% 12.51%
International/Global

MML Foreign Fund (Initial Class)

Adviser: MML Investment Advisers, LLC
Sub-Adviser: Putnam Investment Management, LLC

 0.84% 32.60% 9.01% 6.72%
MML Focused Equity Fund (Class II) [Member]  
Item 2. Key Information [Line Items]  
Portfolio Company Name [Text Block] MML Focused Equity Fund (Class II)
Portfolio Company Adviser [Text Block] MML Investment Advisers, LLC
Portfolio Company Subadviser [Text Block] J.P. Morgan Investment Management Inc.
Current Expenses [Percent] 0.77%
Average Annual Total Returns, 1 Year [Percent] 7.90%
Average Annual Total Returns, 5 Years [Percent] 8.75%
Average Annual Total Returns, 10 Years [Percent] 12.51%
MML Foreign Fund (Initial Class) [Member]  
Item 2. Key Information [Line Items]  
Portfolio Company Name [Text Block] MML Foreign Fund (Initial Class)
Portfolio Company Adviser [Text Block] MML Investment Advisers, LLC
Portfolio Company Subadviser [Text Block] Putnam Investment Management, LLC
Current Expenses [Percent] 0.84%
Average Annual Total Returns, 1 Year [Percent] 32.60%
Average Annual Total Returns, 5 Years [Percent] 9.01%
Average Annual Total Returns, 10 Years [Percent] 6.72%