Fair Value Measurements (Tables)

3 Months Ended

Dec. 28, 2014

Fair Value Disclosures [Abstract]

Assets And Liabilities Measured At Fair Value On A Recurring Basis

Assets and Liabilities Measured at Fair Value on a Recurring Basis (in millions):

			Fair Value Measurements at Reporting Date Using
	Balance at Dec 28, 2014		Quoted Prices in Active Markets for  Identical Assets (Level 1)		Significant  Other Observable  Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)
Assets:
Cash and cash equivalents	$	1,857.0	$	1,857.0	$	—	$	—
Short-term investments:
Available-for-sale securities
Corporate debt securities	10.4		—		10.4		—
Foreign government obligations	2.0		—		2.0		—
U.S. government treasury securities	7.7		7.7		—		—
Total available-for-sale securities	20.1		7.7		12.4		—
Trading securities	76.0		76.0		—		—
Total short-term investments	96.1		83.7		12.4		—
Prepaid expenses and other current assets:
Derivative assets	47.6		—		47.6		—
Long-term investments:
Available-for-sale securities
Agency obligations	8.4		—		8.4		—
Corporate debt securities	120.9		—		120.9		—
Auction rate securities	10.1		—		—		10.1
Foreign government obligations	14.4		—		14.4		—
U.S. government treasury securities	99.3		99.3		—		—
State and local government obligations	8.6		—		8.6		—
Mortgage and asset-backed securities	45.8		—		45.8		—
Total long-term investments	307.5		99.3		198.1		10.1
Other assets:
Derivative assets	75.5		—		75.5		—
Total	$	2,383.7	$	2,040.0	$	333.6	$	10.1
Liabilities:
Accrued liabilities:
Derivative liabilities	$	16.7	$	4.3	$	12.4	$	—
Other long-term liabilities:
Derivative liabilities	8.4		—		8.4		—
Total	$	25.1	$	4.3	$	20.8	$	—

			Fair Value Measurements at Reporting Date Using
	Balance at Sep 28, 2014		Quoted Prices in Active Markets for  Identical Assets (Level 1)		Significant  Other Observable  Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)
Assets:
Cash and cash equivalents	$	1,708.4	$	1,708.4	$	—	$	—
Short-term investments:
Available-for-sale securities
Corporate debt securities	4.9		—		4.9		—
Foreign government obligations	33.7		—		33.7		—
U.S. government treasury securities	10.9		10.9		—		—
State and local government obligations	12.7		—		12.7		—
Certificates of deposit	1.0		—		1.0		—
Total available-for-sale securities	63.2		10.9		52.3		—
Trading securities	72.2		72.2		—		—
Total short-term investments	135.4		83.1		52.3		—
Prepaid expenses and other current assets:
Derivative assets	28.7		0.9		27.8		—
Long-term investments:
Available-for-sale securities
Agency obligations	8.9		—		8.9		—
Corporate debt securities	130.9		—		130.9		—
Auction rate securities	13.8		—		—		13.8
Foreign government obligations	17.4		—		17.4		—
U.S. government treasury securities	94.8		94.8		—		—
State and local government obligations	6.7		—		6.7		—
Mortgage and asset-backed securities	45.9		—		45.9		—
Total long-term investments	318.4		94.8		209.8		13.8
Other assets:
Derivative assets	18.0		—		18.0		—
Total	$	2,208.9	$	1,887.2	$	307.9	$	13.8
Liabilities:
Accrued liabilities:
Derivative liabilities	$	2.4	$	0.4	$	2.0	$	—