Debt (Components of Long-Term Debt Including Associated Interest Rates and Related Fair Values) (Details) (USD $) In Millions, unless otherwise specified	Sep. 28, 2014		Sep. 29, 2013
Debt Instrument [Line Items]
Total, Face Value	$ 2,050.0		$ 1,300.0
Aggregate unamortized discount	1.7		0.6
Total, Carrying Value, net of aggregate unamortized discount	2,048.3		1,299.4
Total, Estimated Fair Value	2,164		1,406
0.875% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Value	400.0		0
Stated Interest Rate	0.875%
Effective Interest Rate	0.941%	[1]
6.250% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Value	550.0		550.0
Stated Interest Rate	6.25%
Effective Interest Rate	6.292%	[1]
2.000% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Value	350.0		0
Stated Interest Rate	2.00%
Effective Interest Rate	2.012%	[1]
3.850% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Value	750.0		750.0
Stated Interest Rate	3.85%
Effective Interest Rate	2.86%	[1]
Fair Value, Inputs, Level 2 [Member] | 0.875% Senior Notes [Member]
Debt Instrument [Line Items]
Estimated Fair Value	400		0
Fair Value, Inputs, Level 2 [Member] | 6.250% Senior Notes [Member]
Debt Instrument [Line Items]
Estimated Fair Value	625		644
Fair Value, Inputs, Level 2 [Member] | 2.000% Senior Notes [Member]
Debt Instrument [Line Items]
Estimated Fair Value	353		0
Fair Value, Inputs, Level 2 [Member] | 3.850% Senior Notes [Member]
Debt Instrument [Line Items]
Estimated Fair Value	$ 786		$ 762

[1] Includes the effects of the amortization of any premium or discount and any gain or loss upon settlement of related treasury locks or forward-starting interest rate swaps utilized to hedge the interest rate risk prior to the debt issuance.