XML 64 R38.htm IDEA: XBRL DOCUMENT
v3.20.4

Right-Of-Use Assets (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Right-Of-Use Assets [Abstract] |
Disclosure Of Information Of The Net Book Value Of Right-Of-Use Asset | The following table details the changes to the net book value of ROU assets during the periods shown:
| Land |  | Buildings |  | Other |  | Total
Balance — January 1, 2019 | $ | 7.3 |  |  | $ | 103.5 |  |  | $ | 0.7 |  |  | $ | 111.5 |
Additions (i) | — |  |  | 27.5 |  |  | 2.1 |  |  | 29.6 |
Depreciation | (0.6) |  |  | (31.6) |  |  | (0.3) |  |  | (32.5) |
Write-down of assets and lease terminations(ii) | — |  |  | (4.7) |  |  | — |  |  | (4.7) |
Foreign exchange and other | 0.3 |  |  | — |  |  | (0.1) |  |  | 0.2 |
Balance — December 31, 2019 | 7.0 |  |  | 94.7 |  |  | 2.4 |  |  | 104.1 |
Additions(i) | 0.7 |  |  | 26.9 |  |  | 0.3 |  |  | 27.9 |
Depreciation | (0.6) |  |  | (29.2) |  |  | (0.5) |  |  | (30.3) |
Write-down of assets and lease terminations(ii) | — |  |  | (1.1) |  |  | — |  |  | (1.1) |
Foreign exchange and other | — |  |  | 0.4 |  |  | — |  |  | 0.4 |
Balance — December 31, 2020 | $ | 7.1 |  |  | $ | 91.7 |  |  | $ | 2.2 |  |  | $ | 101.0 |
(i) Additions represent new leases and lease renewals as result of extension of lease terms. Additions for 2020 were reduced by $4.2 in tenant improvement allowances that we received in connection with a new building lease for one of our Atrenne sites. (ii) During 2020, we recorded $1.1 (2019 — $1.0) (in each case as restructuring charges) to write down certain ROU assets in connection with restructuring actions pertaining to vacated properties, resulting in part from certain sublet recoveries that were lower than the carrying value of the related leases (Sublet Losses). See note 16(a). During 2019, we also terminated several leases in connection with restructuring actions and de-recognized $3.7 of ROU assets in connection therewith.

X
- Definition Disclosure Of Information Of The Net Book Value Of Right-Of-Use Asset [Table Text Block] + References No definition available. + Details
Name: | cls_DisclosureOfInformationOfTheNetBookValueOfRightOfUseAssetTableTextBlock
Namespace Prefix: | cls_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Right-Of-Use Assets [Abstract] + References No definition available. + Details
Name: | cls_RightOfUseAssetsAbstract
Namespace Prefix: | cls_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration