Fair Value Measurements - Interest Rate Swaps in Comprehensive Income (Details) - Cash Flow Hedging - Interest Rate Swap - USD ($) $ in Millions	12 Months Ended
Dec. 29, 2018	Dec. 30, 2017
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain Recognized in Accumulated Other Comprehensive Loss, net of tax	$ 7	$ 6
Interest Expense - Net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of (Gain) Loss Reclassified from Accumulated Other Comprehensive Loss to Income, net of tax	$ (2)	$ 2

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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580

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