Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets, gross, Total	$ 2,195	$ 2,195
Accumulated amortization	(1,244)	(1,232)
Intangible assets, net, Total	951	963
Customer relationships - commercial
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets, gross	839	839
Accumulated amortization	(719)	(708)
Intangible assets, net	120	131
Proprietary technology
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets, gross	478	478
Accumulated amortization	(477)	(477)
Intangible assets, net	1	1
Customer relationships - defense
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets, gross	62	62
Accumulated amortization	(48)	(47)
Intangible assets, net	14	15
Trade name
Goodwill and Intangible Assets Disclosure [Line Items]
Indefinite lived intangible assets	791	791
In process research and development
Goodwill and Intangible Assets Disclosure [Line Items]
Indefinite lived intangible assets	$ 25	$ 25