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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, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |
Income tax benefit, due to Tax Cuts and Jobs Act |  |  |  |  | $ 50.4 |  |
Income tax benefit, due to Tax Cuts and Jobs Act, received in 2017 |  |  |  |  | 9.1 |  |
Income tax benefit, due to Tax Cuts and Jobs Act, receivable in 2018 |  |  |  |  | 7.2 |  |
Income tax benefit, due to Tax Cuts and Jobs Act, receivable between 2019-2022 |  |  |  |  | 34.1 |  |
Rate change in the company's income tax provision |  |  |  |  | (0.4) | $ 3.5 | $ 9.1
U.S. Federal tax loss carryforwards |  |  |  |  | 319.5 |  |
State and local tax loss carryforwards |  |  |  |  | 250.7 |  |
Foreign tax loss carryforwards |  |  |  |  | 267.4 |  |
Total tax loss carryforwards |  |  |  |  | 837.6 | 889.6 |
Tax credit carryforwards |  |  |  |  | 127.0 |  |
Unrecognized Deferred Income Tax Liability, Tax Cuts and Jobs Act |  |  |  |  | 21.5 |  |
Cash paid, net of refunds |  |  |  |  | 34.3 | 46.4 | 59.7
Penalties and interest accrued related to income tax liabilities |  |  |  |  | 2.3 | 1.2 |
Utilization of tax attributes, annual limitation |  |  |  |  | 70.6 |  |
Utilization of tax attributes, cumulative limitation |  |  |  |  | $ 416.0 |  |
Minimum |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |
Expected change in ownership percentage |  |  |  |  | 50.00% |  |
2018 |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |
Tax loss carryforwards, set to expire |  |  |  |  | $ 5.3 |  |
Tax credit carryforwards, set to expire |  |  |  |  | 10.1 |  |
2019 |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |
Tax loss carryforwards, set to expire |  |  |  |  | 7.3 |  |
Tax credit carryforwards, set to expire |  |  |  |  | 10.2 |  |
2020 |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |
Tax loss carryforwards, set to expire |  |  |  |  | 28.5 |  |
Tax credit carryforwards, set to expire |  |  |  |  | 20.9 |  |
2021 |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |
Tax loss carryforwards, set to expire |  |  |  |  | 14.5 |  |
Tax credit carryforwards, set to expire |  |  |  |  | 8.7 |  |
2022 |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |
Tax loss carryforwards, set to expire |  |  |  |  | 114.0 |  |
Tax credit carryforwards, set to expire |  |  |  |  | 7.7 |  |
Thereafter |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |
Tax loss carryforwards, set to expire |  |  |  |  | 668.0 |  |
Tax credit carryforwards, set to expire |  |  |  |  | $ 69.4 |  |
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% | 18.00% | 20.00% |  |  |
United Kingdom | Scenario, Forecast |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |
Income tax rate | 17.00% |  |  |  |  |  |
India |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |
Tax audit for the years |  |  |  |  | 2006 |  |
Brazil |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |
Tax audit for the years |  |  |  |  | 2010 |  |

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- Definition Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e32059-109318 + Details
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