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Significant Accounting Policies - Subsidiaries (Details)	12 Months Ended
	Dec. 31, 2022
Franco-Nevada U.S. Corporation
Disclosure of subsidiaries [line items]
Economic Interests (as a percent)	100.00%
Franco-Nevada (Barbados) Corporation
Disclosure of subsidiaries [line items]
Economic Interests (as a percent)	100.00%
Franco-Nevada Australia Pty Ltd
Disclosure of subsidiaries [line items]
Economic Interests (as a percent)	100.00%
Franco-Nevada Delaware LLC
Disclosure of subsidiaries [line items]
Economic Interests (as a percent)	100.00%
Franco-Nevada Texas LP
Disclosure of subsidiaries [line items]
Economic Interests (as a percent)	100.00%
Minera Global Copper Chile S.A.
Disclosure of subsidiaries [line items]
Economic Interests (as a percent)	100.00%
The Mineral Resource Company II, LLC
Disclosure of subsidiaries [line items]
Economic Interests (as a percent)	49.90%
Funding basis (as a percent)	80.00%

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- Definition

The proportion of funding interest in subsidiary.

+ References

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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- Definition

The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2022-03-24
-Paragraph 17
-Subparagraph b
-Clause iii
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2022-03-24
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-IssueDate 2022-03-24
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-URIDate 2022-03-24

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