Fair Value Measures (Narrative) (Details) - USD ($) |
Mar. 31, 2018 |
Dec. 30, 2017 |
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| Fair Value Measures [Abstract] | ||
| Transfers of financial assets or liabilities | $ 0 | $ 0 |
| Non-financial assets | $ 0 | $ 0 |
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- References No definition available.
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- Definition Fair Value, Assets And Liabilities, Level 1 Between Level 2 Transfers, Amount No definition available.
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- Definition Nonfinancial Assets Fair Value Disclosure No definition available.
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