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Significant accounting policies - Subsidiaries (Details) | 12 Months Ended
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Dec. 31, 2020
Franco-Nevada U.S. Corporation |
Subsidiaries |
Economic Interests (as a percent) | 100.00%
Franco-Nevada GLW Holdings Corp. |
Subsidiaries |
Economic Interests (as a percent) | 100.00%
Franco-Nevada Canada Holdings Corp |
Subsidiaries |
Economic Interests (as a percent) | 100.00%
Franco-Nevada (Barbados) Corporation |
Subsidiaries |
Economic Interests (as a percent) | 100.00%
Franco-Nevada Australia Pty Ltd |
Subsidiaries |
Economic Interests (as a percent) | 100.00%
Franco-Nevada Delaware LLC |
Subsidiaries |
Economic Interests (as a percent) | 100.00%
Franco-Nevada Texas LP |
Subsidiaries |
Economic Interests (as a percent) | 100.00%
Minera Global Copper Chile S.A. |
Subsidiaries |
Economic Interests (as a percent) | 100.00%
FN Subco Inc. |
Subsidiaries |
Economic Interests (as a percent) | 100.00%
FN Holdings ULC |
Subsidiaries |
Economic Interests (as a percent) | 100.00%
The Mineral Resource Company II, LLC |
Subsidiaries |
Economic Interests (as a percent) | 49.90%
Funding basis (as a percent) | 80.00%

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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 2020-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_17_b_iii&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2020-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_16_b_iii&doctype=Standard -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph 19B -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_19B_c&doctype=Standard -URIDate 2020-01-01 + Details
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