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Regulation (Details)	Apr. 09, 2020 USD ($)
Unusual or Infrequent Item, or Both [Line Items]
Education stabilization grant	$ 5,792,122
Strayer University
Unusual or Infrequent Item, or Both [Line Items]
Tuition grant	$ 500

X

- Definition

Cares Act, Education Grant

+ References

No definition available.

+ Details

Name:	stra_CaresActEducationGrant
Namespace Prefix:	stra_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Tuition Grant

+ References

No definition available.

+ Details

Name:	stra_TuitionGrant
Namespace Prefix:	stra_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=stra_StrayerSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: