Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $) | Jun. 29, 2014 | Sep. 29, 2013 |
In Millions, unless otherwise specified |
Assets: | ' | ' |
Total short-term investments | $176.90 | $658.10 |
Available-for-sale securities | 832.7 | 58.3 |
Total | 2,053.30 | 3,316 |
Liabilities: | ' | ' |
Total | 5.7 | 4 |
Cash and Cash Equivalents [Member] | ' | ' |
Assets: | ' | ' |
Cash and cash equivalents | 1,019.40 | 2,575.70 |
Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 103.1 | 591.5 |
Trading securities | 73.8 | 66.6 |
Total short-term investments | 176.9 | 658.1 |
Prepaid Expenses and Other Current Assets [Member] | ' | ' |
Assets: | ' | ' |
Derivative assets | 18.1 | 12.5 |
Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 832.7 | 58.3 |
Other Assets [Member] | ' | ' |
Assets: | ' | ' |
Derivative assets | 6.2 | 11.4 |
Accrued Liabilities [Member] | ' | ' |
Liabilities: | ' | ' |
Derivative liabilities | 3.8 | 3.5 |
Other Long-Term Liabilities [Member] | ' | ' |
Liabilities: | ' | ' |
Derivative liabilities | 1.9 | 0.5 |
Fair Value, Inputs, Level 1 [Member] | ' | ' |
Assets: | ' | ' |
Total | 1,348 | 2,995.20 |
Liabilities: | ' | ' |
Total | 1.3 | 0 |
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member] | ' | ' |
Assets: | ' | ' |
Cash and cash equivalents | 1,019.40 | 2,575.70 |
Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 11 | 352.9 |
Trading securities | 73.8 | 66.6 |
Total short-term investments | 84.8 | 419.5 |
Fair Value, Inputs, Level 1 [Member] | Prepaid Expenses and Other Current Assets [Member] | ' | ' |
Assets: | ' | ' |
Derivative assets | 0.3 | 0 |
Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 243.5 | 0 |
Fair Value, Inputs, Level 1 [Member] | Other Assets [Member] | ' | ' |
Assets: | ' | ' |
Derivative assets | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Accrued Liabilities [Member] | ' | ' |
Liabilities: | ' | ' |
Derivative liabilities | 1.3 | 0 |
Fair Value, Inputs, Level 1 [Member] | Other Long-Term Liabilities [Member] | ' | ' |
Liabilities: | ' | ' |
Derivative liabilities | 0 | 0 |
Significant Other Observable Inputs (Level 2) [Member] | ' | ' |
Assets: | ' | ' |
Total | 691.7 | 307.4 |
Liabilities: | ' | ' |
Total | 4.4 | 4 |
Significant Other Observable Inputs (Level 2) [Member] | Cash and Cash Equivalents [Member] | ' | ' |
Assets: | ' | ' |
Cash and cash equivalents | 0 | 0 |
Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 92.1 | 238.6 |
Trading securities | 0 | 0 |
Total short-term investments | 92.1 | 238.6 |
Significant Other Observable Inputs (Level 2) [Member] | Prepaid Expenses and Other Current Assets [Member] | ' | ' |
Assets: | ' | ' |
Derivative assets | 17.8 | 12.5 |
Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 575.6 | 44.9 |
Significant Other Observable Inputs (Level 2) [Member] | Other Assets [Member] | ' | ' |
Assets: | ' | ' |
Derivative assets | 6.2 | 11.4 |
Significant Other Observable Inputs (Level 2) [Member] | Accrued Liabilities [Member] | ' | ' |
Liabilities: | ' | ' |
Derivative liabilities | 2.5 | 3.5 |
Significant Other Observable Inputs (Level 2) [Member] | Other Long-Term Liabilities [Member] | ' | ' |
Liabilities: | ' | ' |
Derivative liabilities | 1.9 | 0.5 |
Significant Unobservable Inputs (Level 3) [Member] | ' | ' |
Assets: | ' | ' |
Total | 13.6 | 13.4 |
Liabilities: | ' | ' |
Total | 0 | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Cash and Cash Equivalents [Member] | ' | ' |
Assets: | ' | ' |
Cash and cash equivalents | 0 | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
Trading securities | 0 | 0 |
Total short-term investments | 0 | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Prepaid Expenses and Other Current Assets [Member] | ' | ' |
Assets: | ' | ' |
Derivative assets | 0 | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 13.6 | 13.4 |
Significant Unobservable Inputs (Level 3) [Member] | Other Assets [Member] | ' | ' |
Assets: | ' | ' |
Derivative assets | 0 | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Accrued Liabilities [Member] | ' | ' |
Liabilities: | ' | ' |
Derivative liabilities | 0 | 0 |
Significant Unobservable Inputs (Level 3) [Member] | Other Long-Term Liabilities [Member] | ' | ' |
Liabilities: | ' | ' |
Derivative liabilities | 0 | 0 |
Agency Obligations [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | ' | 20 |
Agency Obligations [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 10.7 | 8.1 |
Agency Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | ' | 0 |
Agency Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
Agency Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | ' | 20 |
Agency Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 10.7 | 8.1 |
Agency Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | ' | 0 |
Agency Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
Commercial Paper [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | ' | 127 |
Commercial Paper [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | ' | 0 |
Commercial Paper [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | ' | 127 |
Commercial Paper [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | ' | 0 |
Corporate Debt Securities [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 14.3 | 57.5 |
Corporate Debt Securities [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 342.5 | 36.8 |
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
Corporate Debt Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 14.3 | 57.5 |
Corporate Debt Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 342.5 | 36.8 |
Corporate Debt Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
Corporate Debt Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
Auction Rate Securities [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 13.6 | 13.4 |
Auction Rate Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
Auction Rate Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
Auction Rate Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 13.6 | 13.4 |
Foreign Government Obligations [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 45.8 | ' |
Foreign Government Obligations [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 85.6 | ' |
Foreign Government Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | ' |
Foreign Government Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | ' |
Foreign Government Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 45.8 | ' |
Foreign Government Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 85.6 | ' |
Foreign Government Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | ' |
Foreign Government Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | ' |
US Government Treasury Securities [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 11 | 352.9 |
US Government Treasury Securities [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 243.5 | ' |
US Government Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 11 | 352.9 |
US Government Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 243.5 | ' |
US Government Treasury Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
US Government Treasury Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | ' |
US Government Treasury Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
US Government Treasury Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | ' |
State and Local Government Obligations [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 12 | ' |
State and Local Government Obligations [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 11.2 | ' |
State and Local Government Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | ' |
State and Local Government Obligations [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | ' |
State and Local Government Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 12 | ' |
State and Local Government Obligations [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 11.2 | ' |
State and Local Government Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | ' |
State and Local Government Obligations [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | ' |
Certificates Of Deposit [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 20 | 34.1 |
Certificates Of Deposit [Member] | Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
Certificates Of Deposit [Member] | Significant Other Observable Inputs (Level 2) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 20 | 34.1 |
Certificates Of Deposit [Member] | Significant Unobservable Inputs (Level 3) [Member] | Short-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | 0 |
Mortgage and Asset-backed Securities [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 125.6 | ' |
Mortgage and Asset-backed Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 0 | ' |
Mortgage and Asset-backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | 125.6 | ' |
Mortgage and Asset-backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Long-term Investments [Member] | ' | ' |
Assets: | ' | ' |
Available-for-sale securities | $0 | ' |