XML 50 R38.htm IDEA: XBRL DOCUMENT v3.22.2.2

Acquisitions and Dispositions - Pro Forma (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
MDC
Business Combinations [Abstract]
Business Acquisition, Pro Forma Revenue		$ 568,424		$ 1,612,399
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		568,424		1,612,399
Goodstuff Holdings Limited
Business Combinations [Abstract]
Business Acquisition, Pro Forma Revenue	$ 471,406			872,192
Business Acquisition, Pro Forma Net Income (Loss)	8,357			33,894
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue	471,406			872,192
Business Acquisition, Pro Forma Net Income (Loss)	$ 8,357			33,894
TMA Direct
Business Combinations [Abstract]
Business Acquisition, Pro Forma Revenue		468,862	$ 1,983,437	867,533
Business Acquisition, Pro Forma Net Income (Loss)		8,462	94,768	34,491
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		468,862	1,983,437	867,533
Business Acquisition, Pro Forma Net Income (Loss)		8,462	94,768	34,491
BNG
Business Combinations [Abstract]
Business Acquisition, Pro Forma Revenue		473,539	1,989,833	878,610
Business Acquisition, Pro Forma Net Income (Loss)		7,031	92,670	30,495
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		473,539	1,989,833	878,610
Business Acquisition, Pro Forma Net Income (Loss)		$ 7,031	$ 92,670	$ 30,495

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

X

- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(3)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(3)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionsProFormaRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=stgw_MDCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=stgw_GoodstuffHoldingsLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=stgw_TMADirectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=stgw_BrandNewGalaxyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: