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v3.19.2

Marketable Securities (Details) - USD ($) $ in Millions | Jun. 28, 2019 | Sep. 28, 2018
--- | --- | ---
Other Current Assets [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | $ 192.2 | $ 294.1
Other Noncurrent Assets [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | 35.1 | 22.8
US Treasury and Government [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | 54.4 |
US Treasury and Government [Member] | Other Current Assets [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | 44.4 | 65.0
US Treasury and Government [Member] | Other Noncurrent Assets [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | 10.0 | 0.0
Corporate Debt Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | 94.4 |
Corporate Debt Securities [Member] | Other Current Assets [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | 83.9 | 204.1
Corporate Debt Securities [Member] | Other Noncurrent Assets [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | 10.5 | 12.0
US States and Political Subdivisions Debt Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | 77.2 |
US States and Political Subdivisions Debt Securities [Member] | Other Current Assets [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | 62.6 | 2.0
US States and Political Subdivisions Debt Securities [Member] | Other Noncurrent Assets [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | 14.6 | 0.8
Debt Security, Government, Non-US [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | 1.3 |
Debt Security, Government, Non-US [Member] | Other Current Assets [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | 1.3 | 23.0
Debt Security, Government, Non-US [Member] | Other Noncurrent Assets [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Available-for-sale Securities | $ 0.0 | $ 10.0

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References No definition available. + Details
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