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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Apr. 01, 2017 | Dec. 31, 2017
Income Tax Contingency [Line Items] |  |  |  |
Tax benefit adjustment to the provisional income tax expense | $ 1.3 |  |  |
Retained earnings | 4,474.8 | [1] |  | $ 4,171.9
Tax benefits |  |  | $ 19.1 |
Tax benefits, release of valuation allowances with respect to deferred tax assets of certain foreign subsidiaries | 35.1 |  |  |
Tax benefits, share-based compensation | 10.1 |  | 15.5 |
Tax benefits, restructuring charges and various other items | 4.1 |  | $ 3.6 |
Tax expense related to an increase in foreign withholding tax | $ 22.0 |  |  |
U.S. federal statutory income tax rate | 21.00% |  | 35.00% |
Accounting Standards Update 2016-16 |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Deferred tax asset as a result of ASU adoption |  |  |  | 2.3
Retained earnings |  |  |  | $ 2.3
Other Income And Expense | Lear FAWSN |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Consolidation of affiliate, revaluation gain | $ 10.0 |  |  |
[1] | Unaudited.

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- Definition In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + 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 S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: 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 + Details
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