XML 45 R31.htm IDEA: XBRL DOCUMENT
v3.21.2

Noncontrolling and Redeemable Noncontrolling Interests (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2021
Noncontrolling Interest [Abstract] |
Noncontrolling Interest [Table Text Block] | Changes in the Company’s ownership interests in our less than 100% owned subsidiaries during the three and nine months ended September 30, 2021 and 2020 were as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Net income (loss) attributable to Stagwell Inc. common shareholders | $ | (2,071) |  |  | $ | 17,808 |  |  | $ | 20,199 |  |  | $ | 34,124 |
Transfers from the noncontrolling interest: |  |  |  |  |  |  |
Increase in Stagwell Inc. paid-in capital for purchase of redeemable noncontrolling interests and noncontrolling interests | 9,679 |  |  | — |  |  | 9,679 |  |  | — |
Net transfers from noncontrolling interests | 9,679 |  |  | — |  |  | 9,679 |  |  | — |
Change from net income (loss) attributable to Stagwell Inc. and transfers to noncontrolling interests | $ | 7,608 |  |  | $ | 17,808 |  |  | $ | 29,878 |  |  | $ | 34,124 |
Redeemable Noncontrolling Interest [Table Text Block] | The following table presents changes in redeemable noncontrolling interests:
| September 30, |  | December 31,
| 2021 |  | 2020
Beginning Balance | $ | 604 |  |  | $ | 3,603 |
Redemptions | (2,831) |  |  | — |
Acquisitions(1) | 30,830 |  |  | — |
Changes in redemption value | 1,680 |  |  | 127 |
Net loss attributable to redeemable noncontrolling interests | (956) |  |  | (3,126) |
Other | 460 |  |  | — |
Ending Balance | $ | 29,787 |  |  | $ | 604 |
(1) Represents redeemable noncontrolling interests acquired in connection with the acquisition of MDC.

X
- Definition Noncontrolling Interest [Table Text Block] + References No definition available. + Details
Name: | stgw_NoncontrollingInterestTableTextBlock
Namespace Prefix: | stgw_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NoncontrollingInterestAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of redeemable noncontrolling interest (as defined) included in the statement of financial position as either a liability or temporary equity. As of the date of the statement of financial position, such redeemable noncontrolling interest is currently redeemable, as defined, for cash or other assets of the entity at (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the entity. + References No definition available. + Details
Name: | us-gaap_RedeemableNoncontrollingInterestTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration