Acquisitions - Other (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition and Divestiture [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 1,643	$ 417	$ 195
Goodwill, Acquired During Period	1,024	350
SIS, Inc. [Member]
Business Acquisition and Divestiture [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		40
Goodwill, Acquired During Period		40
Goodwill, Purchase Accounting Adjustments	(13)
Intangible assets	$ 13
Hydroid Inc. [Member]
Business Acquisition and Divestiture [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		377
Goodwill, Acquired During Period		239
Goodwill, Purchase Accounting Adjustments		(71)
Cash Acquired from Acquisition		2
Intangible assets		$ 76