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Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Marketing Services and IT Softeware Licences
Other Commitments [Line Items]
Payments for long-term purchase commitment	$ 4.6	$ 5.2	$ 3.4

X

- Definition

Payments For Long-Term Purchase Commitment

+ References

No definition available.

+ Details

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

X

- 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

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

X

- Details

Name:	us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=shen_MarketingServicesAndITSoftewareLicencesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: