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Government Grants (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended
	Jul. 31, 2022	Dec. 31, 2021	Jun. 30, 2022
Subsequent Event [Line Items]
Increase (decrease) in grants receivable		$ 57.8
Grants receivable, performance condition period			5 years
Subsequent Event
Subsequent Event [Line Items]
Increase (decrease) in grants receivable	$ 10.2

X

- Definition

Grants Receivable, Performance Condition Period

+ References

No definition available.

+ Details

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Namespace Prefix:	shen_
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Balance Type:	na
Period Type:	duration

X

- Definition

Increase (Decrease) in Grants Receivable

+ References

No definition available.

+ Details

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Namespace Prefix:	shen_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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