Schedule of Disaggregated Revenue by Products and Region (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation Of Revenue [Line Items]
Net sales		$ 1,847	$ 2,037	$ 6,111	$ 4,931
Airbag Products And Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	[1]	1,199	1,332	3,973	3,188
Seatbelt Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	[1]	647	706	2,139	1,743
China
Disaggregation Of Revenue [Line Items]
Net sales		414	425	1,228	989
Japan
Disaggregation Of Revenue [Line Items]
Net sales		160	180	546	488
Rest of Asia
Disaggregation Of Revenue [Line Items]
Net sales		204	201	675	514
Americas
Disaggregation Of Revenue [Line Items]
Net sales		596	693	1,903	1,579
Europe
Disaggregation Of Revenue [Line Items]
Net sales		$ 473	$ 538	$ 1,760	$ 1,361

[1] Including Corporate and other sales.