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Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($)
$ in Millions
Oct. 02, 2022
Oct. 03, 2021
Assets [Abstract]    
Total short-term investments $ 364.5 $ 162.2
Derivative assets, Current 75.1 147.6
Derivative assets, Noncurrent 156.2 84.3
Total assets 3,693.3 7,131.5
Liabilities [Abstract]    
Derivative liabilities, Current 21.0 8.6
Derivative liabilities, Noncurrent 34.0 8.2
Total liabilities $ 55.0 $ 16.8
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Prepaid Expense and Other Assets, Current Prepaid Expense and Other Assets, Current
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other Assets, Noncurrent Other Assets, Noncurrent
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Accrued Liabilities, Current Accrued Liabilities, Current
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Deferred Tax and Other Liabilities, Noncurrent Deferred Tax and Other Liabilities, Noncurrent
Cash and cash equivalents [Member]    
Assets [Abstract]    
Cash and cash equivalents $ 2,818.4 $ 6,455.7
Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 31.7 87.8
Equity Securities, FV-NI 57.7 74.4
Structured deposits 275.1  
Total short-term investments 364.5 162.2
Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 279.1 281.7
Commercial Paper [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   63.0
Corporate debt securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 22.4 24.7
Corporate debt securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 134.7 162.0
Auction rate securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   6.0
Foreign government obligations [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 3.8 4.0
U.S. Government Treasury Securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 9.3  
U.S. Government Treasury Securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 82.8 76.3
State and local government obligations [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 1.3 1.5
Mortgage and other asset-backed securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   0.1
Mortgage and other asset-backed securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 56.5 31.9
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]    
Assets [Abstract]    
Derivative assets, Current 0.0 131.1
Derivative assets, Noncurrent 0.0 0.0
Total assets 2,947.1 6,737.5
Liabilities [Abstract]    
Derivative liabilities, Current 0.0 0.3
Derivative liabilities, Noncurrent 0.0 0.0
Total liabilities $ 0.0 $ 0.3
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Prepaid Expense and Other Assets, Current Prepaid Expense and Other Assets, Current
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other Assets, Noncurrent Other Assets, Noncurrent
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Accrued Liabilities, Current Accrued Liabilities, Current
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Deferred Tax and Other Liabilities, Noncurrent Deferred Tax and Other Liabilities, Noncurrent
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Cash and cash equivalents [Member]    
Assets [Abstract]    
Cash and cash equivalents $ 2,797.3 $ 6,455.7
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 9.3 0.0
Equity Securities, FV-NI 57.7 74.4
Structured deposits 0.0  
Total short-term investments 67.0 74.4
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 82.8 76.3
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Commercial Paper [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   0.0
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Corporate debt securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 0.0
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Corporate debt securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 0.0
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Auction rate securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   0.0
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Foreign government obligations [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 0.0
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | U.S. Government Treasury Securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 9.3  
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | U.S. Government Treasury Securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 82.8 76.3
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | State and local government obligations [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 0.0
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Mortgage and other asset-backed securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   0.0
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Mortgage and other asset-backed securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 0.0
Significant Other Observable Inputs (Level 2) [Member]    
Assets [Abstract]    
Derivative assets, Current 75.1 16.5
Derivative assets, Noncurrent 156.2 84.3
Total assets 746.2 388.0
Liabilities [Abstract]    
Derivative liabilities, Current 21.0 8.3
Derivative liabilities, Noncurrent 34.0 8.2
Total liabilities $ 55.0 $ 16.5
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Prepaid Expense and Other Assets, Current Prepaid Expense and Other Assets, Current
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other Assets, Noncurrent Other Assets, Noncurrent
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Accrued Liabilities, Current Accrued Liabilities, Current
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Deferred Tax and Other Liabilities, Noncurrent Deferred Tax and Other Liabilities, Noncurrent
Significant Other Observable Inputs (Level 2) [Member] | Cash and cash equivalents [Member]    
Assets [Abstract]    
Cash and cash equivalents $ 21.1 $ 0.0
Significant Other Observable Inputs (Level 2) [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 22.4 87.8
Equity Securities, FV-NI 0.0 0.0
Structured deposits 275.1  
Total short-term investments 297.5 87.8
Significant Other Observable Inputs (Level 2) [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 196.3 199.4
Significant Other Observable Inputs (Level 2) [Member] | Commercial Paper [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   63.0
Significant Other Observable Inputs (Level 2) [Member] | Corporate debt securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 22.4 24.7
Significant Other Observable Inputs (Level 2) [Member] | Corporate debt securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 134.7 162.0
Significant Other Observable Inputs (Level 2) [Member] | Auction rate securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   0.0
Significant Other Observable Inputs (Level 2) [Member] | Foreign government obligations [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 3.8 4.0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Treasury Securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0  
Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Treasury Securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 0.0
Significant Other Observable Inputs (Level 2) [Member] | State and local government obligations [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 1.3 1.5
Significant Other Observable Inputs (Level 2) [Member] | Mortgage and other asset-backed securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   0.1
Significant Other Observable Inputs (Level 2) [Member] | Mortgage and other asset-backed securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 56.5 31.9
Significant Unobservable Inputs (Level 3) [Member]    
Assets [Abstract]    
Derivative assets, Current 0.0 0.0
Derivative assets, Noncurrent 0.0 0.0
Total assets 0.0 6.0
Liabilities [Abstract]    
Derivative liabilities, Current 0.0 0.0
Derivative liabilities, Noncurrent 0.0 0.0
Total liabilities $ 0.0 $ 0.0
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Prepaid Expense and Other Assets, Current Prepaid Expense and Other Assets, Current
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other Assets, Noncurrent Other Assets, Noncurrent
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Accrued Liabilities, Current Accrued Liabilities, Current
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Deferred Tax and Other Liabilities, Noncurrent Deferred Tax and Other Liabilities, Noncurrent
Significant Unobservable Inputs (Level 3) [Member] | Cash and cash equivalents [Member]    
Assets [Abstract]    
Cash and cash equivalents $ 0.0 $ 0.0
Significant Unobservable Inputs (Level 3) [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 0.0
Equity Securities, FV-NI 0.0 0.0
Structured deposits 0.0  
Total short-term investments 0.0 0.0
Significant Unobservable Inputs (Level 3) [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 6.0
Significant Unobservable Inputs (Level 3) [Member] | Commercial Paper [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   0.0
Significant Unobservable Inputs (Level 3) [Member] | Corporate debt securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 0.0
Significant Unobservable Inputs (Level 3) [Member] | Corporate debt securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 0.0
Significant Unobservable Inputs (Level 3) [Member] | Auction rate securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   6.0
Significant Unobservable Inputs (Level 3) [Member] | Foreign government obligations [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 0.0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Government Treasury Securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0  
Significant Unobservable Inputs (Level 3) [Member] | U.S. Government Treasury Securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 0.0
Significant Unobservable Inputs (Level 3) [Member] | State and local government obligations [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0 0.0
Significant Unobservable Inputs (Level 3) [Member] | Mortgage and other asset-backed securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   0.0
Significant Unobservable Inputs (Level 3) [Member] | Mortgage and other asset-backed securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale $ 0.0 $ 0.0