Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109978405&loc=d3e80720-113993

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580

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

Financial Instruments - Narrative (Detail) - USD ($)	3 Months Ended
Financial Instruments - Narrative (Detail) - USD ($)	Mar. 31, 2018	Jun. 29, 2019	Dec. 29, 2018	Dec. 30, 2017
Equity Forwards
Investment Holdings [Line Items]
Equity forwards in place of common stock associated with its deferred compensation plans (in shares)		92,200
Treasury locks
Investment Holdings [Line Items]
Treasury locks outstanding		$ 0	$ 0	$ 300,000,000
Treasury locks settled	$ 300,000,000
Gain on the settlement of the treasury lock	$ 13,300,000
Fair Value Hedging
Investment Holdings [Line Items]
Notional amount of interest rate swaps outstanding and designated as fair value hedges		$ 100,000,000	$ 100,000,000