Reorganization of Business - Net Charges Incurred by Business Segment (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 30, 2019	Mar. 31, 2018
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 8	$ 13
Products and Systems Integration
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	7	9
Services and Software
Restructuring Cost and Reserve [Line Items]
Reorganization of business charges	$ 1	$ 4

Amount of restructuring charges, remediation cost, and asset impairment loss.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration