Income Taxes Net Operating Loss Carryforwards Expire (Details) $ in Millions	Dec. 28, 2019 USD ($)
Operating Loss Carryforwards [Line Items]
Operating loss carryforward - state	$ 64
2020-2024
Operating Loss Carryforwards [Line Items]
Operating loss carryforward - state	32
2025-2029
Operating Loss Carryforwards [Line Items]
Operating loss carryforward - state	20
2030-2034
Operating Loss Carryforwards [Line Items]
Operating loss carryforward - state	8
2035-2039
Operating Loss Carryforwards [Line Items]
Operating loss carryforward - state	$ 4

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 25
-Paragraph 20
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115928272&loc=d3e28680-109314

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319

Name:	us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant