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Goodwill and intangible assets (Tables)
 12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Changes in Carrying Amount of Goodwill by Segment
Changes in the carrying amount of goodwill by reporting unit were as follows:
TotalDWSC&IECSOther
Balance at December 31, 2019$110.4 $— $— $98.3 $12.1 
Translation adjustments(1.8)— — — (1.8)
Balance at December 31, 2020108.6 — — 98.3 10.3 
Acquisitions(i)
206.3 140.8 65.5 — — 
Translation adjustments0.1 0.1 — — — 
Balance at December 31, 2021$315.0 $140.9 $65.5 $98.3 $10.3 
(i) During 2021, the company acquired Unify Square and Mobinergy resulting in goodwill of $132.9 million and $7.9 million, respectively, recorded in the company’s DWS segment and CompuGain resulting in goodwill of $65.5 million recorded in the company’s C&I segment. See Note 4, “Acquisitions.”
Schedule of Intangible Assets, Net
Intangible assets, net (see Note 4, “Acquisitions”) at December 31, 2021 consists of the following:
Gross Carrying AmountAccumulated AmortizationNet Carrying Amount
Technology$10.0 $1.8 $8.2 
Customer Relationships27.0 1.2 25.8 
Marketing0.9 — 0.9 
Total$37.9 $3.0 $34.9 
Schedule of Future Amortization of Intangible Assets
The future amortization relating to acquired intangible assets at December 31, 2021 was estimated as follows:
YearFuture Amortization Expense
2022$8.3 
20237.9 
20245.4 
20252.6 
20262.3 
Thereafter8.4 
Total$34.9