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Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($)
$ in Millions
Sep. 29, 2024
Oct. 01, 2023
Assets [Abstract]    
Total short-term investments $ 257.0 $ 401.5
Derivative assets, Current 8.7 41.0
Derivative assets, Noncurrent 179.1 153.0
Total assets 4,007.0 4,394.3
Liabilities [Abstract]    
Derivative liabilities, Current 29.2 3.6
Derivative liabilities, Noncurrent 56.7 43.2
Total liabilities 85.9 $ 46.8
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]   Prepaid Expense and Other Assets, Current
Cash and cash equivalents [Member]    
Assets [Abstract]    
Cash and cash equivalents 3,286.2 $ 3,551.5
Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 90.7 70.7
Equity Securities, FV-NI 82.2 69.6
Structured deposits 84.1 261.2
Total short-term investments 257.0 401.5
Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 275.8 247.3
Other Long-Term Investments 276.0  
Structured deposits 0.2  
Corporate debt securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 51.8 64.0
Corporate debt securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 112.8 91.1
Foreign government obligations [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   3.9
U.S. Government Treasury Securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 36.9 2.8
U.S. Government Treasury Securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 94.9 104.7
State and local government obligations [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 1.4  
State and local government obligations [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 3.7 1.3
Mortgage and other asset-backed securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.4  
Mortgage and other asset-backed securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 64.4 50.2
Other Corporate Bonds | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.2  
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]    
Assets [Abstract]    
Derivative assets, Current 0.0 0.0
Derivative assets, Noncurrent 0.0 0.0
Total assets 3,500.2 3,728.6
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
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Cash and cash equivalents [Member]    
Assets [Abstract]    
Cash and cash equivalents 3,286.2 $ 3,551.5
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 36.9 2.8
Equity Securities, FV-NI 82.2 69.6
Structured deposits 0.0 0.0
Total short-term investments 119.1 72.4
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 94.9 104.7
Other Long-Term Investments 94.9  
Structured deposits 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] | Foreign government obligations [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] | U.S. Government Treasury Securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 36.9 2.8
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 94.9 104.7
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | State and local government obligations [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] | 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
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Other Corporate Bonds | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.0  
Significant Other Observable Inputs (Level 2) [Member]    
Assets [Abstract]    
Derivative assets, Current 8.7 41.0
Derivative assets, Noncurrent 179.1 153.0
Total assets 495.8 665.7
Liabilities [Abstract]    
Derivative liabilities, Current 29.2 3.6
Derivative liabilities, Noncurrent 56.7 43.2
Total liabilities 85.9 $ 46.8
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]   Prepaid Expense and Other Assets, Current
Significant Other Observable Inputs (Level 2) [Member] | Cash and cash equivalents [Member]    
Assets [Abstract]    
Cash and cash equivalents 0.0 $ 0.0
Significant Other Observable Inputs (Level 2) [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 53.8 67.9
Equity Securities, FV-NI 0.0 0.0
Structured deposits 84.1 261.2
Total short-term investments 137.9 329.1
Significant Other Observable Inputs (Level 2) [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 169.9 142.6
Other Long-Term Investments 170.1  
Structured deposits 0.2  
Significant Other Observable Inputs (Level 2) [Member] | Corporate debt securities [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 51.8 64.0
Significant Other Observable Inputs (Level 2) [Member] | Corporate debt securities [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 101.8 91.1
Significant Other Observable Inputs (Level 2) [Member] | Foreign government obligations [Member] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale   3.9
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 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] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 1.4  
Significant Other Observable Inputs (Level 2) [Member] | State and local government obligations [Member] | Long-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 3.7 1.3
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 0.4  
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 64.4 50.2
Significant Other Observable Inputs (Level 2) [Member] | Other Corporate Bonds | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 0.2  
Significant Unobservable Inputs (Level 3) [Member]    
Assets [Abstract]    
Derivative assets, Current 0.0 0.0
Derivative assets, Noncurrent 0.0 0.0
Total assets 11.0 0.0
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
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 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 11.0 0.0
Other Long-Term Investments 11.0  
Structured deposits 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 11.0 0.0
Significant Unobservable Inputs (Level 3) [Member] | Foreign government obligations [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] | Short-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] | 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] | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale 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
Significant Unobservable Inputs (Level 3) [Member] | Other Corporate Bonds | Short-term investments [Member]    
Assets [Abstract]    
Debt Securities, Available-for-sale $ 0.0