Defined Contribution Plans, Pension and Other Post-Retirement Benefit Plans - Current Investment Allocation Target for Pension Plans and Weighted-Average Asset Allocations (Detail)	Dec. 31, 2018	Dec. 31, 2017
U.S. Pension and Other Post-Retirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target Allocation	100.00%	100.00%
Weighted-average pension plans allocation	100.00%	100.00%
Non-U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target Allocation	100.00%	100.00%
Weighted-average pension plans allocation	100.00%	100.00%
Cash and cash equivalents \| U.S. Pension and Other Post-Retirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target Allocation	0.00%	0.00%
Weighted-average pension plans allocation	1.00%	0.00%
Cash and cash equivalents \| Non-U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target Allocation	0.00%	0.00%
Weighted-average pension plans allocation	1.00%	0.00%
Equity/Balanced securities \| U.S. Pension and Other Post-Retirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target Allocation	55.00%	55.00%
Weighted-average pension plans allocation	52.00%	57.00%
Equity/Balanced securities \| Non-U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target Allocation	55.00%	55.00%
Weighted-average pension plans allocation	59.00%	58.00%
Fixed income securities \| U.S. Pension and Other Post-Retirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target Allocation	25.00%	25.00%
Weighted-average pension plans allocation	22.00%	20.00%
Fixed income securities \| Non-U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target Allocation	45.00%	45.00%
Weighted-average pension plans allocation	40.00%	42.00%
Real estate \| U.S. Pension and Other Post-Retirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target Allocation	20.00%	20.00%
Weighted-average pension plans allocation	25.00%	23.00%
Real estate \| Non-U.S. Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target Allocation	0.00%	0.00%
Weighted-average pension plans allocation	0.00%	0.00%

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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