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Corporate Information (Details)	12 Months Ended
	Dec. 31, 2019
Corporate Information
Maximum energy streams target percentage (as a percent)	20.00%

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- References

No definition available.

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Namespace Prefix:	fnv_
Data Type:	xbrli:stringItemType
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- Definition

Represents the maximum energy streams target percentage.

+ References

No definition available.

+ Details

Name:	fnv_MaximumTargetPercentForEnergyStreams
Namespace Prefix:	fnv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration