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v3.19.3.a.u2

Cost-reduction actions - Additional Information (Detail) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) employee | Dec. 31, 2018 USD ($) employee | Dec. 31, 2017 USD ($) employee
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost-reduction charges and other costs | $ 23.3 | $ 0.2 | $ 2.6 | $ 2.6 | $ 22.8 | $ (0.9) | $ 0.7 | $ (2.9) | $ 28.7 | $ 19.7 | $ 146.8
Charges related to work-force reductions |  |  |  |  |  |  |  |  | 22.1 | 19.0 | 117.9
Other expenses related to the cost-reduction effort |  |  |  |  |  |  |  |  | 6.6 |  | 28.9
Cost of revenue | Services |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost-reduction charges and other costs |  |  |  |  |  |  |  |  | 10.8 | 18.1 | 99.6
Cost of revenue | Technology |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost-reduction charges and other costs |  |  |  |  |  |  |  |  | 0.2 |  | 0.4
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost-reduction charges and other costs |  |  |  |  |  |  |  |  | 15.5 | 1.6 | 33.6
Research and development expenses |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost-reduction charges and other costs |  |  |  |  |  |  |  |  | 2.2 |  | 1.4
Other income (expense), net |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost-reduction charges and other costs |  |  |  |  |  |  |  |  |  |  | 11.8
Lease abandonment costs |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other expenses related to the cost-reduction effort |  |  |  |  |  |  |  |  | 4.6 |  |
Net asset sales and write-offs |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other expenses related to the cost-reduction effort |  |  |  |  |  |  |  |  |  |  | 1.8
Asset write-offs |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other expenses related to the cost-reduction effort |  |  |  |  |  |  |  |  | 1.1 |  |
Professional fees and other expenses related to the cost-reduction effort |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other expenses related to the cost-reduction effort |  |  |  |  |  |  |  |  |  |  | 5.2
Other expenses related to the cost-reduction effort |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other expenses related to the cost-reduction effort |  |  |  |  |  |  |  |  | 0.9 |  |
Idle leased facilities |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other expenses related to the cost-reduction effort |  |  |  |  |  |  |  |  |  | 0.7 | 4.7
Contract amendment and termination |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other expenses related to the cost-reduction effort |  |  |  |  |  |  |  |  |  |  | 5.4
Net foreign currency translation losses |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other expenses related to the cost-reduction effort |  |  |  |  |  |  |  |  |  |  | 11.8
Net foreign currency translation losses | Other income (expense), net |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cost-reduction charges and other costs |  |  |  |  |  |  |  |  |  |  | (11.8)
U.S. |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Charges related to work-force reductions |  |  |  |  |  |  |  |  | $ 4.6 | $ 5.2 | $ 9.4
Number of employees | employee |  |  |  |  |  |  |  |  | 509 | 264 | 542
U.S. | Changes in estimates |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Charges related to work-force reductions |  |  |  |  |  |  |  |  | $ (1.5) | $ 0.1 | $ (1.3)
Non-U.S. |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Charges related to work-force reductions |  |  |  |  |  |  |  |  | $ 21.1 | $ 22.5 | $ 109.4
Number of employees | employee |  |  |  |  |  |  |  |  | 255 | 325 | 2,274
Non-U.S. | Changes in estimates |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Charges related to work-force reductions |  |  |  |  |  |  |  |  | $ (2.1) | $ (8.8) | $ (7.8)
Non-U.S. | Additional benefits provided in 2017 |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |
Charges related to work-force reductions |  |  |  |  |  |  |  |  |  |  | $ 8.2

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