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Property and Equipment, Net - Property and Equipment, Net by Geographic Area (Parenthetical) (Details) - Country	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Geographic Concentrations | Property and Equipment Net | Rest of World
Revenues From External Customers And Long Lived Assets [Line Items]
Number of individual country exceeded 10% of total property and equipment	0	0

X

- Definition

Number of country exceeded ten percentage of property and equipment.

+ References

No definition available.

+ Details

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Namespace Prefix:	snap_
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Period Type:	duration

X

- Details

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Namespace Prefix:
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X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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