v3.25.1
Shareholder Report
12 Months Ended
Feb. 28, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name T. ROWE PRICE TAX-EXEMPT MONEY FUND, INC.
Entity Central Index Key 0000315748
Entity Investment Company Type N-1A
Document Period End Date Feb. 28, 2025
C000005557  
Shareholder Report [Line Items]  
Fund Name Tax-Exempt Money Fund
Class Name Investor Class
Trading Symbol PTEXX
Shareholder Report Annual or Semi-Annual Annual Shareholder Report
Additional Information [Text Block] You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information atwww.troweprice.com/prospectus. You can also request this information without charge by contacting T. Rowe Price at 1‑800‑638‑5660 or info@troweprice.com or contacting your intermediary.
Material Fund Change Notice [Text Block]  
Additional Information Phone Number 1‑800‑638‑5660
Additional Information Email <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify; white-space-collapse: preserve-breaks;">info@troweprice.com</span>
Additional Information Website www.troweprice.com/prospectus
Expenses [Text Block]

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

 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Tax-Exempt Money Fund - Investor Class
$46
0.45%
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.45%
AssetsNet $ 685,396,000
Holdings Count | Holding 195
Advisory Fees Paid, Amount $ 1,193,000
Additional Fund Statistics [Text Block]

What are some fund statistics?

Fund Statistics

Total Net Assets (000s)
$685,396
Number of Portfolio Holdings
195
Holdings [Text Block]

Security Allocation (as a % of Net Assets)

Other Municipal Security
43.4%
Variable Rate Demand Notes
33.6
Non-Financial Company Commercial Paper
21.6
Other Assets less Liabilities
1.4
Largest Holdings [Text Block]

Top Ten Holdings (as a % of Net Assets)

Virginia Housing Dev. Auth., Tender Option Bond Trust Receipts
1.7%
Roanoke Economic Dev. Auth., Carilion Clinic Obligated
1.7
Clark County Dept. of Aviation
1.6
New York City Transational Fin. Auth., Tender Option Bond Trust Receipts
1.6
Rhode Island Health & Ed. Building
1.6
Missouri HEFA, SSM Health Care
1.6
Houston Combined Utility System
1.6
Harris County
1.6
Greenville County School Dist.
1.5
South Carolina Public Service Auth.
1.5
Material Fund Change [Text Block]
Updated Prospectus Web Address www.troweprice.com/paperless
C000193189  
Shareholder Report [Line Items]  
Fund Name Tax-Exempt Money Fund
Class Name I Class
Trading Symbol TERXX
Shareholder Report Annual or Semi-Annual Annual Shareholder Report
Additional Information [Text Block] You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information atwww.troweprice.com/prospectus. You can also request this information without charge by contacting T. Rowe Price at 1‑800‑638‑5660 or info@troweprice.com or contacting your intermediary.
Material Fund Change Notice [Text Block]  
Additional Information Phone Number 1‑800‑638‑5660
Additional Information Email <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify; white-space-collapse: preserve-breaks;">info@troweprice.com</span>
Additional Information Website www.troweprice.com/prospectus
Expenses [Text Block]

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

 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Tax-Exempt Money Fund - I Class
$24
0.24%
Expenses Paid, Amount $ 24
Expense Ratio, Percent 0.24%
AssetsNet $ 685,396,000
Holdings Count | Holding 195
Advisory Fees Paid, Amount $ 1,193,000
Additional Fund Statistics [Text Block]

What are some fund statistics?

Fund Statistics

Total Net Assets (000s)
$685,396
Number of Portfolio Holdings
195
Holdings [Text Block]

Security Allocation (as a % of Net Assets)

Other Municipal Security
43.4%
Variable Rate Demand Notes
33.6
Non-Financial Company Commercial Paper
21.6
Other Assets less Liabilities
1.4
Largest Holdings [Text Block]

Top Ten Holdings (as a % of Net Assets)

Virginia Housing Dev. Auth., Tender Option Bond Trust Receipts
1.7%
Roanoke Economic Dev. Auth., Carilion Clinic Obligated
1.7
Clark County Dept. of Aviation
1.6
New York City Transational Fin. Auth., Tender Option Bond Trust Receipts
1.6
Rhode Island Health & Ed. Building
1.6
Missouri HEFA, SSM Health Care
1.6
Houston Combined Utility System
1.6
Harris County
1.6
Greenville County School Dist.
1.5
South Carolina Public Service Auth.
1.5
Material Fund Change [Text Block]
Updated Prospectus Web Address www.troweprice.com/paperless