Basis of Presentation - Additional Information (Detail)	Jun. 30, 2018 Segment	Jun. 29, 2018 Segment $ / shares shares
Basis Of Presentation [Line Items]
Number of reportable segments \| Segment	1	2
Spin-off
Basis Of Presentation [Line Items]
Common stock, par value \| $ / shares		$ 1.00
Common stock shares outstanding		1
Spin-off \| Veoneer, Inc.
Basis Of Presentation [Line Items]
Date of distribution		Jun. 29, 2018
Common stock issued		1
Common stock, par value \| $ / shares		$ 1.00
Spin-off \| Veoneer, Inc. \| Swedish Depository Receipt
Basis Of Presentation [Line Items]
Stock dividends, shares		1

Basis of presentation.

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