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Restructuring - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | $ 88.0 | $ 70.9 | $ 63.6
Restructuring charges, including curtailment and settlement losses |  | 72.6 |
Carrying value in excess of related estimated fair values | 4.7 | 1.3 | 4.7
Restructuring, expected cost | 43.0 |  |
Cost of sales |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 63.7 | 59.2 | 55.4
Selling, general and administrative expenses |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 24.0 | 14.3 | 8.5
Other income and expense, net |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 0.3 | (0.9) | (0.3)
Employee termination benefits |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 74.5 | 62.9 | 54.1
Asset impairments |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 4.7 | 1.3 | 4.7
Pension benefit plan curtailment and settlement losses |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Settlement/curtailment losses |  | 1.7 |
Contract termination costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 1.5 | 1.7 | 0.1
Other related costs |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | $ 7.3 | $ 5.0 | $ 4.7

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