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Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions | Apr. 02, 2023 | Oct. 02, 2022
--- | --- | ---
Assets: |  |
Total short-term investments | $ 379.4 | $ 364.5
Derivative assets, Current | 24.2 | 75.1
Derivative assets, Noncurrent | 92.8 | 156.2
Total Assets | 3,819.4 | 3,693.3
Liabilities: |  |
Derivative liabilities, Current | 22.6 | 21.0
Derivative liabilities, Noncurrent | 42.8 | 34.0
Derivative Liabilities | 65.4 |
Total liabilities |  | 55.0
Cash and cash equivalents |  |
Assets: |  |
Cash and cash equivalents | 3,071.8 | 2,818.4
Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 63.2 | 31.7
Marketable equity securities | 67.8 | 57.7
Total short-term investments | 379.4 | 364.5
Structured deposits | 248.4 | 275.1
Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 251.2 | 279.1
Commercial paper | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.1 |
Corporate debt securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 53.2 | 22.4
Corporate debt securities | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 101.0 | 134.7
Foreign Government Obligations [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities |  | 3.8
Foreign Government Short-term Debt Securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 3.8 |
Mortgage and other asset-backed securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.7 |
Mortgage and other asset-backed securities | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 50.7 | 56.5
State and local government obligations | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 1.3 | 1.3
U.S. government treasury securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 5.4 | 9.3
U.S. government treasury securities | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 98.2 | 82.8
Fair Value, Inputs, Level 1 [Member] |  |
Assets: |  |
Derivative assets, Current | 0.0 | 0.0
Derivative assets, Noncurrent | 0.0 | 0.0
Total Assets | 3,243.2 | 2,947.1
Liabilities: |  |
Derivative liabilities, Current | 0.0 | 0.0
Derivative liabilities, Noncurrent | 0.0 | 0.0
Derivative Liabilities | 0.0 |
Total liabilities |  | 0.0
Fair Value, Inputs, Level 1 [Member] | Cash and cash equivalents |  |
Assets: |  |
Cash and cash equivalents | 3,071.8 | 2,797.3
Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 5.4 | 9.3
Marketable equity securities | 67.8 | 57.7
Total short-term investments | 73.2 | 67.0
Structured deposits | 0.0 | 0.0
Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 98.2 | 82.8
Fair Value, Inputs, Level 1 [Member] | Commercial paper | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 |
Fair Value, Inputs, Level 1 [Member] | Corporate debt securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Fair Value, Inputs, Level 1 [Member] | Corporate debt securities | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Fair Value, Inputs, Level 1 [Member] | Foreign Government Obligations [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities |  | 0.0
Fair Value, Inputs, Level 1 [Member] | Foreign Government Short-term Debt Securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 |
Fair Value, Inputs, Level 1 [Member] | Mortgage and other asset-backed securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 |
Fair Value, Inputs, Level 1 [Member] | Mortgage and other asset-backed securities | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Fair Value, Inputs, Level 1 [Member] | State and local government obligations | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Fair Value, Inputs, Level 1 [Member] | U.S. government treasury securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 5.4 | 9.3
Fair Value, Inputs, Level 1 [Member] | U.S. government treasury securities | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 98.2 | 82.8
Fair Value, Inputs, Level 2 [Member] |  |
Assets: |  |
Derivative assets, Current | 24.2 | 75.1
Derivative assets, Noncurrent | 92.8 | 156.2
Total Assets | 576.2 | 746.2
Liabilities: |  |
Derivative liabilities, Current | 22.6 | 21.0
Derivative liabilities, Noncurrent | 42.8 | 34.0
Derivative Liabilities | 65.4 |
Total liabilities |  | 55.0
Fair Value, Inputs, Level 2 [Member] | Cash and cash equivalents |  |
Assets: |  |
Cash and cash equivalents | 0.0 | 21.1
Fair Value, Inputs, Level 2 [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 57.8 | 22.4
Marketable equity securities | 0.0 | 0.0
Total short-term investments | 306.2 | 297.5
Structured deposits | 248.4 | 275.1
Fair Value, Inputs, Level 2 [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 153.0 | 196.3
Fair Value, Inputs, Level 2 [Member] | Commercial paper | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.1 |
Fair Value, Inputs, Level 2 [Member] | Corporate debt securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 53.2 | 22.4
Fair Value, Inputs, Level 2 [Member] | Corporate debt securities | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 101.0 | 134.7
Fair Value, Inputs, Level 2 [Member] | Foreign Government Obligations [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities |  | 3.8
Fair Value, Inputs, Level 2 [Member] | Foreign Government Short-term Debt Securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 3.8 |
Fair Value, Inputs, Level 2 [Member] | Mortgage and other asset-backed securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.7 |
Fair Value, Inputs, Level 2 [Member] | Mortgage and other asset-backed securities | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 50.7 | 56.5
Fair Value, Inputs, Level 2 [Member] | State and local government obligations | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 1.3 | 1.3
Fair Value, Inputs, Level 2 [Member] | U.S. government treasury securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Fair Value, Inputs, Level 2 [Member] | U.S. government treasury securities | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Fair Value, Inputs, Level 3 [Member] |  |
Assets: |  |
Derivative assets, Current | 0.0 | 0.0
Derivative assets, Noncurrent | 0.0 | 0.0
Total Assets | 0.0 | 0.0
Liabilities: |  |
Derivative liabilities, Current | 0.0 | 0.0
Derivative liabilities, Noncurrent | 0.0 | 0.0
Derivative Liabilities | 0.0 |
Total liabilities |  | 0.0
Fair Value, Inputs, Level 3 [Member] | Cash and cash equivalents |  |
Assets: |  |
Cash and cash equivalents | 0.0 | 0.0
Fair Value, Inputs, Level 3 [Member] | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Marketable equity securities | 0.0 | 0.0
Total short-term investments | 0.0 | 0.0
Structured deposits | 0.0 | 0.0
Fair Value, Inputs, Level 3 [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Fair Value, Inputs, Level 3 [Member] | Commercial paper | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 |
Fair Value, Inputs, Level 3 [Member] | Corporate debt securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Fair Value, Inputs, Level 3 [Member] | Corporate debt securities | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Fair Value, Inputs, Level 3 [Member] | Foreign Government Obligations [Member] | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities |  | 0.0
Fair Value, Inputs, Level 3 [Member] | Foreign Government Short-term Debt Securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 |
Fair Value, Inputs, Level 3 [Member] | Mortgage and other asset-backed securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 |
Fair Value, Inputs, Level 3 [Member] | Mortgage and other asset-backed securities | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Fair Value, Inputs, Level 3 [Member] | State and local government obligations | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Fair Value, Inputs, Level 3 [Member] | U.S. government treasury securities | Short-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | 0.0 | 0.0
Fair Value, Inputs, Level 3 [Member] | U.S. government treasury securities | Long-term Investments [Member] |  |
Assets: |  |
Available-for-sale debt securities | $ 0.0 | $ 0.0

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