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Restructuring and impairment charges (credits) - Charges Recognized (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 28, 2020 | Jun. 30, 2019 | Jun. 28, 2020 | Jun. 30, 2019
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | $ 19,005 | $ (2,196) | $ 20,351 | $ 12,169
Asset impairment charges |  | 3,881 |  | 6,911
Restructuring and impairment charges | 19,005 | 1,685 | 20,351 | 19,080
Termination benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 18,601 | (2,672) | 19,637 | 10,866
Asset impairment charges |  | 0 |  | 0
Restructuring and impairment charges |  | (2,672) |  | 10,866
Other Restructuring costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 404 | 476 | 714 | 1,303
Asset impairment charges |  | 3,881 |  | 6,911
Restructuring and impairment charges |  | 4,357 |  | 8,214
2020 Workforce reduction plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 10,564 |  | 10,564 |
2020 Workforce reduction plan | Termination benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 10,564 |  | 10,564 |
2020 Workforce reduction plan | Other Restructuring costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 0 |  | 0 |
2019 Footprint realignment plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 405 | (429) | 1,243 | 12,546
2019 Footprint realignment plan | Termination benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 323 | (459) | 1,152 | 12,516
2019 Footprint realignment plan | Other Restructuring costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 82 | 30 | 91 | 30
2018 Footprint realignment plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 7,597 | (2,141) | 7,992 | (1,130)
2018 Footprint realignment plan | Termination benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 7,545 | (2,275) | 7,859 | (1,838)
2018 Footprint realignment plan | Other Restructuring costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 52 | 134 | 133 | 708
Other restructuring programs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 439 | 374 | 552 | 753
Other restructuring programs | Termination benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | 169 | 62 | 62 | 188
Other restructuring programs | Other Restructuring costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges (credits) | $ 270 | $ 312 | $ 490 | $ 565

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