Segment Information - Operating Results of Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Segment Reporting Information [Line Items]
Sales	$ 2,313	$ 1,942
Provision for depreciation and amortization	74	69
Restructuring and other credits	(93)	(4)
Capital expenditures	94	119
Total assets	13,067		$ 11,179
Engine Products
Segment Reporting Information [Line Items]
Sales	1,253	974
Fastening Systems
Segment Reporting Information [Line Items]
Sales	471	412
Engineered Structures
Segment Reporting Information [Line Items]
Sales	294	304
Forged Wheels
Segment Reporting Information [Line Items]
Sales	295	252
Inter-segment sales
Segment Reporting Information [Line Items]
Sales	10	9
Inter-segment sales | Engine Products
Segment Reporting Information [Line Items]
Sales	2	2
Inter-segment sales | Fastening Systems
Segment Reporting Information [Line Items]
Sales	0	0
Inter-segment sales | Engineered Structures
Segment Reporting Information [Line Items]
Sales	8	7
Inter-segment sales | Forged Wheels
Segment Reporting Information [Line Items]
Sales	0	0
Total segment capital expenditures
Segment Reporting Information [Line Items]
Sales	2,323	1,951
Segment Adjusted cost of goods sold	1,475	1,299
Other segment items	84	72
Segment Adjusted EBITDA	764	580
Provision for depreciation and amortization	72	68
Restructuring and other credits	(93)	(4)
Capital expenditures	91	116
Total assets	10,623	10,217
Total segment capital expenditures | Engine Products
Segment Reporting Information [Line Items]
Sales	1,255	976
Segment Adjusted cost of goods sold	765	633
Other segment items	32	25
Segment Adjusted EBITDA	458	318
Provision for depreciation and amortization	38	33
Restructuring and other credits	0	0
Capital expenditures	59	85
Total assets	5,698	5,279
Total segment capital expenditures | Fastening Systems
Segment Reporting Information [Line Items]
Sales	471	412
Segment Adjusted cost of goods sold	289	256
Other segment items	32	29
Segment Adjusted EBITDA	150	127
Provision for depreciation and amortization	13	12
Restructuring and other credits	0	0
Capital expenditures	17	10
Total assets	2,902	2,741
Total segment capital expenditures | Engineered Structures
Segment Reporting Information [Line Items]
Sales	302	311
Segment Adjusted cost of goods sold	226	236
Other segment items	10	8
Segment Adjusted EBITDA	66	67
Provision for depreciation and amortization	10	13
Restructuring and other credits	(93)	(4)
Capital expenditures	12	6
Total assets	1,300	1,469
Total segment capital expenditures | Forged Wheels
Segment Reporting Information [Line Items]
Sales	295	252
Segment Adjusted cost of goods sold	195	174
Other segment items	10	10
Segment Adjusted EBITDA	90	68
Provision for depreciation and amortization	11	10
Restructuring and other credits	0	0
Capital expenditures	3	15
Total assets	$ 723	$ 728