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Schedule of Disaggregated Revenue by Products and Region (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation Of Revenue [Line Items]
Net sales		$ 2,706	$ 2,555	$ 7,998	$ 7,774
Airbags Steering Wheels and Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	[1]	1,830	1,736	5,395	5,264
Seatbelt Products and Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	[1]	875	819	2,603	2,511
Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales		897	851	2,639	2,637
Europe [Member]
Disaggregation Of Revenue [Line Items]
Net sales		745	700	2,337	2,231
China
Disaggregation Of Revenue [Line Items]
Net sales		526	495	1,450	1,423
Asia, excl. China [Member]
Disaggregation Of Revenue [Line Items]
Net sales		$ 538	$ 508	$ 1,572	$ 1,483
[1] Including Corporate sales.

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