Expense Example	Apr. 24, 2026 USD ($)
T. Rowe Price Tax-Exempt Money Fund, Inc. - Investor Class
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 46
Expense Example, with Redemption, 3 Years	149
Expense Example, with Redemption, 5 Years	266
Expense Example, with Redemption, 10 Years	608
T. Rowe Price Tax-Exempt Money Fund, Inc. - I Class
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	25
Expense Example, with Redemption, 3 Years	80
Expense Example, with Redemption, 5 Years	142
Expense Example, with Redemption, 10 Years	$ 327

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 4

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Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
Balance Type:	na
Period Type:	duration

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 4

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Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 4

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Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 4

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Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
Balance Type:	na
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 1
-Subsection a