Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Name:	us-gaap_CapitalLeaseObligations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Debt - Build-to-suit leases Narrative (Details) $ in Millions	Jul. 02, 2017 USD ($) Leases	Feb. 28, 2017 USD ($)	Jan. 01, 2017 USD ($)
Debt Instrument [Line Items]
Number of projects accounted for under build-to-suit lease accounting \| Leases	2
Build-to-suit lease liability	$ 124		$ 223
Build-to-suit lease asset under construction	124		223
Obligations under financing leases	109		$ 9
Construction In Progress And Build to Suit Lease Liability [Member]
Debt Instrument [Line Items]
Obligations under financing leases	$ 100
GRAIL, Inc. [Member]
Debt Instrument [Line Items]
Build-to-suit lease liability		$ 58
Build-to-suit lease asset under construction		$ 58