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Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Prepaid Expenses and Other Current Assets. |  |
Prepaid expenses | $ 10.6 | $ 30.0
Debt issue costs | 0.4 | 0.6
Prepaid expenses and other current assets | $ 11.0 | $ 30.6

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- Definition The amount of finance costs capitalized current. + References No definition available. + Details
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Namespace Prefix: | fnv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of prepaid expenses and other current assets. + References No definition available. + Details
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Namespace Prefix: | fnv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | fnv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount recognised as a current asset for expenditures made prior to the period when the economic benefit will be realised. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
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Balance Type: | debit
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