Schedule of Maturities of Lease Liabilities Under Operating and Finance Leases (Parenthetical) (Detail) $ in Millions	3 Months Ended
Mar. 30, 2019 USD ($)
Leases [Line Items]
Operating cash flows from operating leases	$ 125
Operating Lease, term	10 years
Options
Leases [Line Items]
Operating cash flows from operating leases	$ 155
Legally Binding Lease Payments
Leases [Line Items]
Operating cash flows from operating leases	$ 2

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (g)(1)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980

Name:	us-gaap_OperatingLeasePayments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration