v3.25.4
Shareholder Report
 12 Months Ended
Dec. 31, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name ELFUN GOVERNMENT MONEY MARKET FUND
Entity Central Index Key 0000855630
Entity Investment Company Type N-1A
Document Period End Date Dec. 31, 2025
Shareholder Report Annual or Semi-Annual Annual Shareholder Report
C000032336  
Shareholder Report [Line Items]  
Fund Name Elfun Government Money Market Fund
Trading Symbol ELMXX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Elfun Government Money Market Fund (the "Fund") for the period of January 1, 2025 through December 31, 2025.
Additional Information [Text Block] You can find additional information about the Fund, including the Prospectus, Statement of Additional Information, financial statements and other information at www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=mf. You can also request this information about the Fund by contacting us at 1-800-242-0134.
Additional Information Phone Number 1-800-242-0134
Additional Information Website www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=mf
Expenses [Text Block]

What were the Fund costs for the last year? (based on a hypothetical $10,000 Investment)

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Elfun Government Money Market Fund
$30
0.29%
Expenses Paid, Amount $ 30
Expense Ratio, Percent 0.29%
AssetsNet $ 105,705,825
Holdings Count | Holding 214
Advisory Fees Paid, Amount $ 140,786
Additional Fund Statistics [Text Block]

Key Fund Statistics as of 12/31/2025

  • Total Net Assets$105,705,825
  • Number of Portfolio Holdings214
  • Total Advisory Fees Paid$140,786
Holdings [Text Block]

Top Security Types

Assets
%
U.S. Treasuries
61.4%
Repurchase Agreements
20.9%
U.S. Government Agency Obligations
19.5%
Largest Holdings [Text Block]

Top Ten Holdings

Holdings
%
Standard Chartered U.S. Treasury Repo, 3.82%, due 01/02/26
4.9%
Fixed Income Clearing Corp. U.S. Treasury Repo, 3.82%, due 01/02/26
4.7%
Citigroup Global Markets, Inc. U.S. Treasury Repo, 3.82%, due 01/02/26
4.7%
BNP Paribas Securities Corp. U.S. Treasury Repo, 3.83%, due 01/02/26
4.7%
U.S. Treasury Floating Rate Notes, 3.78%, due 07/31/26
2.0%
Merrill Lynch, Pierce, Fenner & Smith, Inc. U.S. Treasury Repo, 3.82%, due 01/02/26
1.9%
U.S. Treasury Bills, 4.30%, due 01/08/26
1.8%
U.S. Treasury Bills, 4.08%, due 02/19/26
1.8%
U.S. Treasury Bills, 4.26%, due 01/02/26
1.8%
U.S. Treasury Bills, 4.24%, due 01/02/26
1.7%