Cash and Cash Equivalents (Details) - USD ($) $ in Millions	Sep. 29, 2023	Dec. 31, 2022
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 348	$ 389
Operating cash and cash equivalents
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	222	276
Short-term investments
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	12	6
Cash and cash equivalents held in consolidated joint ventures and Aspire Defence subcontracting entities
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	114	107
Short-term investments | Aspire Defence Project
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	64	46
International
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	230	354
International | Operating cash and cash equivalents
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	137	251
International | Short-term investments
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	6	4
International | Cash and cash equivalents held in consolidated joint ventures and Aspire Defence subcontracting entities
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	87	99
Domestic
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	118	35
Domestic | Operating cash and cash equivalents
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	85	25
Domestic | Short-term investments
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	6	2
Domestic | Cash and cash equivalents held in consolidated joint ventures and Aspire Defence subcontracting entities
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 27	$ 8