Debt (Components of Long-Term Debt Including Associated Interest Rates and Related Fair Values) (Details) (USD $) In Millions, unless otherwise specified	Jun. 29, 2014		Dec. 29, 2013	Sep. 29, 2013
Debt Instrument [Line Items]
Total, Face Value	$ 2,050.0			$ 1,300.0
Aggregate unamortized discount	1.9			0.6
Total, Carrying Value, net of aggregate unamortized discount	2,048.1			1,299.4
Total, Estimated Fair Value	2,178			1,406
Point Eight Seven Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Value	400.0		400.0	0
Stated Interest Rate	0.875%		0.875%
Effective Interest Rate	0.941%	[1]
Six Point Two Five Percentage 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]
Two Point Zero Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Value	350.0		350.0	0
Stated Interest Rate	2.00%		2.00%
Effective Interest Rate	2.012%	[1]
Three Point Eight Five Percentage 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] | Point Eight Seven Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Estimated Fair value	401			0
Fair Value, Inputs, Level 2 [Member] | Six Point Two Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Estimated Fair value	633			644
Fair Value, Inputs, Level 2 [Member] | Two Point Zero Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Estimated Fair value	353			0
Fair Value, Inputs, Level 2 [Member] | Three Point Eight Five Percentage Senior Notes [Member]
Debt Instrument [Line Items]
Estimated Fair value	$ 791			$ 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.