Spirit Acquisition - Schedule of Business Combination, Recognized Asset Acquired and Liability Assumed (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025	Dec. 08, 2025
Preliminary
Goodwill	$ 17,633	$ 17,275
Spirit AeroSystems Holdings, Inc.
Preliminary
Cash and cash equivalents	281		$ 281
Accounts receivable	396		339
Unbilled receivables	126		126
Inventories	1,445		1,438
Property, plant and equipment	2,447		2,419
Goodwill	10,360		9,997
Acquired intangible assets	109		109
Other assets	121		116
Accounts payable	(963)		(953)
Accrued liabilities	(2,239)		(1,784)
Advances and progress billings	(97)		(97)
Short-term debt and current portion of long-term debt	(329)		(329)
Other long-term liabilities	(152)		(178)
Long-term debt	(3,279)		(3,279)
Other	163		166
Total net assets acquired	$ 8,389		$ 8,371