Debt (Details) $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($) item	Dec. 31, 2023 CAD ($)
Credit Facility
Revolving term credit facility
Size of facility	$ 1,000,000,000.0
Balance, end of year	$ 0
Credit Facility \| Bottom
Revolving term credit facility
Bankers acceptance period under credit facility	30 days
Stamping fee (as a percent)	1.00%
Standby fee (as a percent)	0.20%
Credit Facility \| Top
Revolving term credit facility
Bankers acceptance period under credit facility	180 days
Stamping fee (as a percent)	2.05%
Standby fee (as a percent)	0.41%
Credit Facility \| CIBC \| Bottom
Revolving term credit facility
Spread on variable rate (as a percent)	0.00%	0.00%
Credit Facility \| CIBC \| Top
Revolving term credit facility
Spread on variable rate (as a percent)	1.05%	1.05%
Credit Facility \| Prime rate \| Bottom
Revolving term credit facility
Spread on variable rate (as a percent)	0.00%	0.00%
Credit Facility \| Prime rate \| Top
Revolving term credit facility
Spread on variable rate (as a percent)	1.05%	1.05%
Credit Facility \| SOFR \| Bottom
Revolving term credit facility
Spread on variable rate (as a percent)	1.10%	1.10%
Credit Facility \| SOFR \| Top
Revolving term credit facility
Spread on variable rate (as a percent)	2.30%	2.30%
Letter of credit
Revolving term credit facility
Maximum borrowing capacity	$ 19,300,000	$ 25.5
Number of letter of credit \| item	3

Bankers acceptance period.

No definition available.

Name:	fnv_BankersAcceptancePeriod
Namespace Prefix:	fnv_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facilities without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	fnv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facilities without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility and the nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	fnv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the number of letter of credit.

+ References

No definition available.

+ Details

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Namespace Prefix:	fnv_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Stamping fee as a percent.

+ References

No definition available.

+ Details

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Namespace Prefix:	fnv_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The standby fee in percent.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard
-URIDate 2023-03-23

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_7&doctype=Standard
-URIDate 2023-03-23

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
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- Details

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Namespace Prefix:
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Balance Type:
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- Details

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- Details

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- Details

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- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
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