Restructuring and Other Credits - Narrative (Details) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2026 USD ($)	Mar. 31, 2026 USD ($)	Jun. 30, 2025 USD ($) employee	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and other (credits) charges (less than)	$ 1		$ 1
Restructuring and other credits	0		0	$ (93)	$ (4)
Layoff costs	0		$ 3	0	3
Number of employees associated with layoff costs | employee			119
Reversal of previously recorded layoff reserve	$ 0		$ 1	0	2
Fastening Systems
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | employee			79
Forged Wheels
Restructuring Cost and Reserve [Line Items]
Number of employees associated with layoff costs | employee			40
Gain (loss) on sale of assets			$ 2		2
Engineered Structures | UK
Restructuring Cost and Reserve [Line Items]
Gain (loss) on sale of assets					$ 3
Disposed by Sale | Disk Forging Facility
Restructuring Cost and Reserve [Line Items]
Gain from disposal of business		$ 93		$ 93