Discontinued Operations - Summary of Significant Non-Cash Items of Discontinued Operations (Detail) - Spin-off - Veoneer, Inc. - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation	$ 44.8	$ 61.0
Amortization of intangible assets	10.5	29.7
Capital expenditures	71.1	69.9
Acquisition in affiliate, net	71.0	110.1
Undistributed loss from equity method investment	29.9	17.7
M/A-COM
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Earn-out adjustment	$ (14.0)	$ (12.7)

Amount of acquisition of businesses and interest in affiliates, net attributable to discontinued operations.

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Amount of amortization of intangible assets attributable to discontinued operations.

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Amount of depreciation attributable to discontinued operations.

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Amount of earn out adjustment attributable to discontinued operations.

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Amount of undistributed earnings from equity method investments, net of dividends attributable to discontinued operations.

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Amount of capital expenditure attributable to discontinued operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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