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Income taxes - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Apr. 01, 2020
Apr. 01, 2017
Sep. 30, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Tax Credit Carryforward [Line Items]              
Rate change in the company's income tax provision         $ 3.5 $ 9.1 $ 0.0
U.S. Federal tax loss carryforwards         455.5    
State and local tax loss carryforwards         199.3    
Foreign tax loss carryforwards         234.8    
Total tax loss carryforwards       $ 854.5 889.6 854.5  
Tax credit carryforwards         408.9    
Cumulative undistributed earnings of foreign subsidiaries         1,500.0    
Cash paid, net of refunds         46.4 59.7 $ 73.9
Penalties and interest accrued related to income tax liabilities       $ 1.0 1.2 1.0  
Utilization of tax attributes, annual limitation         70.6    
Utilization of tax attributes, cumulative limitation         $ 307.0    
Minimum              
Tax Credit Carryforward [Line Items]              
Expected change in ownership percentage         50.00%    
2017              
Tax Credit Carryforward [Line Items]              
Tax loss carryforwards, set to expire         $ 9.0    
Tax credit carryforwards, set to expire         48.1    
2018              
Tax Credit Carryforward [Line Items]              
Tax loss carryforwards, set to expire         4.8    
Tax credit carryforwards, set to expire         21.0    
2019              
Tax Credit Carryforward [Line Items]              
Tax loss carryforwards, set to expire         6.6    
Tax credit carryforwards, set to expire         19.7    
2020              
Tax Credit Carryforward [Line Items]              
Tax loss carryforwards, set to expire         20.4    
Tax credit carryforwards, set to expire         45.9    
2021              
Tax Credit Carryforward [Line Items]              
Tax loss carryforwards, set to expire         17.9    
Tax credit carryforwards, set to expire         41.4    
Thereafter              
Tax Credit Carryforward [Line Items]              
Tax loss carryforwards, set to expire         830.9    
Tax credit carryforwards, set to expire         232.8    
United Kingdom              
Tax Credit Carryforward [Line Items]              
Rate change in the company's income tax provision         $ 3.5 $ 9.1  
Income tax rate     18.00% 20.00%      
Tax audit for the years         2010    
United Kingdom | Scenario, Forecast              
Tax Credit Carryforward [Line Items]              
Income tax rate 17.00% 18.00%          
India              
Tax Credit Carryforward [Line Items]              
Tax audit for the years         2006    
Brazil              
Tax Credit Carryforward [Line Items]              
Tax audit for the years         2010