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Investments, Forward Contracts and Fair Value Measurements - Contractual Maturities (Details) $ in Millions	Sep. 28, 2019 USD ($)
Amortized Cost/ Carrying Cost
Amounts maturing in more than 5 years	$ 0.9
Total debt available-for-sale securities	0.9
Estimated Fair Value
Amounts maturing in more than 5 years	0.6
Total debt available-for-sale securities	$ 0.6

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date.

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date.

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Amount of available-for-sale debt securities at cost, net of adjustments, maturing after the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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Amount of available-for-sale debt securities at fair value maturing after the fifth fiscal year following the latest fiscal year.

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