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Income Taxes Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended
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Mar. 21, 2020 | Mar. 23, 2019
Income Tax Disclosure [Abstract] |  |
Tax Cuts and Jobs Act, Income Tax Expense (Benefit) | $ 0 | $ (29)
Net tax (benefit)/expense related to the TCJ Act per share |  | $ (0.02)

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- Definition Net tax (benefit)/expense related to the TCJ Act per share + References No definition available. + Details
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Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition Amount of income tax expense (benefit) from effect of Tax Cuts and Jobs Act. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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