Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Acquisitions - Narrative (Details) - USD ($) $ in Millions	May 01, 2020	Jul. 31, 2019	Oct. 02, 2020	Mar. 31, 2020
Business Acquisition [Line Items]
Goodwill			$ 2,702	$ 2,671
DHPC Technologies
Business Acquisition [Line Items]
Purchase price	$ 53
Goodwill	31
Intangible assets	20
Knight Point Systems, LLC
Business Acquisition [Line Items]
Purchase price		$ 264
Program assets \| DHPC Technologies
Business Acquisition [Line Items]
Intangible assets	$ 18
Program assets \| Minimum \| DHPC Technologies
Business Acquisition [Line Items]
Weighted average useful life of intangible assets	20 years
Order or Production Backlog \| DHPC Technologies
Business Acquisition [Line Items]
Intangible assets	$ 2
Weighted average useful life of intangible assets	1 year