Contingent Liabilities - Additional Information (Detail) Airbags in Millions, $ in Millions	3 Months Ended	9 Months Ended
	Dec. 31, 2020 Vehicle	Sep. 30, 2024 USD ($) Vehicle	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Sep. 05, 2023 Airbags	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Loss Contingencies [Line Items]
Product liability insurance receivable		$ 77	$ 73	$ 96	$ 120		$ 178	$ 145
Insurance receivable related to recall		58
Recall of frontal driver and passenger air bag | Airbags | Airbags						52
Honda Buckle Recall | Damages from Product Defects
Loss Contingencies [Line Items]
Number of vehicles recalled | Vehicle	449,000
Unannounced Recall | Damages from Product Defects
Loss Contingencies [Line Items]
Product liability insurance receivable		10
ZF Inflator Recall | Maximum
Loss Contingencies [Line Items]
Estimate potential loss		43
ZF Inflator Recall | Minimum
Loss Contingencies [Line Items]
Estimate potential loss		0
ZF Inflator Recall | Damages from Product Defects
Loss Contingencies [Line Items]
Product liability insurance receivable		$ 0
ZF Inflator Recall | Damages from Product Defects | Global
Loss Contingencies [Line Items]
Number of vehicles recalled | Vehicle		762,000