Material Accounting Policy Information - Restricted share units and Deferred Share Units (Details)	12 Months Ended
Dec. 31, 2024 shares
Restricted Share Units
Significant accounting policies
The number of shares exchanged for each RSU	1
The number of trading days immediately preceding the date of the conversion award	5 days
Time-based RSU
Significant accounting policies
Vesting period	3 years
Performance based RSU
Significant accounting policies
Vesting period	3 years
Target settlement range 0% to 200%	100.00%
Deferred share units
Significant accounting policies
Number of trading days immediately preceding grant date for determining fair value	5 days
Bottom of range \| Performance based RSU
Significant accounting policies
Target settlement range 0% to 200%	0.00%
Top of range \| Performance based RSU
Significant accounting policies
Target settlement range 0% to 200%	200.00%

The number of shares for each other equity instruments vest.

No definition available.

Name:	fnv_NumberOfSharesForEachOtherEquityInstrumentsVest
Namespace Prefix:	fnv_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of trading days immediately preceding the date of conversion or award grant for determining fair value.

+ References

No definition available.

+ Details

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

- Definition

The number of trading days immediately preceding grant date of grant for determining fair value.

+ References

No definition available.

+ Details

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

- Definition

The percentage of performance and target settlement in share based payment.

+ References

No definition available.

+ Details

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

- Definition

The vesting life of awards in a share-based payment arrangement.

+ References

No definition available.

+ Details

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

- 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

Name:	ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=fnv_IfrsRestrictedStockUnitsRSUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=fnv_TimeBasedRestrictedStockUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=fnv_PerformanceBasedRestrictedStockUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=fnv_DeferredShareUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: