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Pension and Other Postretirement Benefit Plans - Pretax Amounts Recorded in Accumulated Other Comprehensive Loss That Are Expected To Be Recognized As Components of Net Periodic Benefit Cost in Next Fiscal Year (Detail) $ in Millions | Dec. 31, 2017 USD ($)
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United States | Pension |
Defined Benefit Plan Disclosure [Line Items] |
Net unrecognized actuarial gain (loss) | $ (2.1)
Prior service credit | 0.0
Total amounts recorded in accumulated other comprehensive loss that is expected to be recognized in the subsequent year | (2.1)
United States | Other Postretirement |
Defined Benefit Plan Disclosure [Line Items] |
Net unrecognized actuarial gain (loss) | 2.2
Prior service credit | 0.2
Total amounts recorded in accumulated other comprehensive loss that is expected to be recognized in the subsequent year | 2.4
Foreign | Pension |
Defined Benefit Plan Disclosure [Line Items] |
Net unrecognized actuarial gain (loss) | (6.0)
Prior service credit | 0.0
Total amounts recorded in accumulated other comprehensive loss that is expected to be recognized in the subsequent year | (6.0)
Foreign | Other Postretirement |
Defined Benefit Plan Disclosure [Line Items] |
Net unrecognized actuarial gain (loss) | (0.1)
Prior service credit | 0.3
Total amounts recorded in accumulated other comprehensive loss that is expected to be recognized in the subsequent year | $ 0.2

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- Definition Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount included in accumulated other comprehensive (income) loss for prior service cost (credit) expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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