Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Goodwill [Roll Forward]
Goodwill		$ 4,823	$ 4,786
Accumulated impairment losses		(721)	(719)
Goodwill, net		4,102	4,067
Impairment	$ 0	(4)	(2)
Translation and other		(31)	37
Transfer from Engine Products to Engineered Structures			0
Goodwill		4,792	4,823
Accumulated impairment losses		(725)	(721)
Goodwill, net		4,067	4,102
Goodwill		4,067	4,102
Engine Products
Goodwill [Roll Forward]
Goodwill		2,890	2,883
Accumulated impairment losses		(719)	(719)
Goodwill, net		2,171	2,164
Impairment		0	0
Translation and other		(22)	24
Transfer from Engine Products to Engineered Structures			(17)
Goodwill		2,868	2,890
Accumulated impairment losses		(719)	(719)
Goodwill, net		2,149	2,171
Goodwill		2,149	2,171	$ 17
Fastening Systems
Goodwill [Roll Forward]
Goodwill		1,620	1,607
Accumulated impairment losses		0	0
Goodwill, net		1,620	1,607
Impairment		(4)	0
Translation and other		(9)	13
Transfer from Engine Products to Engineered Structures			0
Goodwill		1,611	1,620
Accumulated impairment losses		(4)	0
Goodwill, net		1,607	1,620
Goodwill		1,607	1,620
Engineered Structures
Goodwill [Roll Forward]
Goodwill		306	289
Accumulated impairment losses		(2)	0
Goodwill, net		304	289
Impairment		0	(2)
Translation and other		0	0
Transfer from Engine Products to Engineered Structures			17
Goodwill		306	306
Accumulated impairment losses		(2)	(2)
Goodwill, net		304	304
Goodwill		304	304
Forged Wheels
Goodwill [Roll Forward]
Goodwill		7	7
Accumulated impairment losses		0	0
Goodwill, net		7	7
Impairment		0	0
Translation and other		0	0
Transfer from Engine Products to Engineered Structures			0
Goodwill		7	7
Accumulated impairment losses		0	0
Goodwill, net		7	7
Goodwill		$ 7	$ 7