Debt (Details) (USD $)	9 Months Ended
	Jun. 27, 2014		Sep. 27, 2013
Debt:
Debt	$ 1,463,000,000		$ 1,463,000,000
Less current portion	20,000,000		20,000,000
Long-term debt	1,443,000,000		1,443,000,000
Available line of credit under revolving credit agreement	1,000,000,000
Amounts drawn under revolving credit facilities	0		0
Description of variable interest rate basis	LIBOR
Carrying amount
Debt:
Debt instrument, fair value	1,443,000,000		1,443,000,000
Total
Debt:
Debt instrument, fair value	1,684,000,000		1,676,000,000
3.375% public notes due 2015
Debt:
Debt	258,000,000		258,000,000
Debt stated interest rate (as a percent)	3.375%		3.375%
3.75% public notes due 2018
Debt:
Debt	67,000,000		67,000,000
Debt stated interest rate (as a percent)	3.75%		3.75%
8.5% public notes due 2019
Debt:
Debt	364,000,000		364,000,000
Debt stated interest rate (as a percent)	8.50%		8.50%
7.0% public notes due 2019
Debt:
Debt	246,000,000		246,000,000
Debt stated interest rate (as a percent)	7.00%		7.00%
6.875% public notes due 2021
Debt:
Debt	465,000,000		466,000,000
Debt stated interest rate (as a percent)	6.875%		6.875%
4.625% public notes due 2023
Debt:
Debt	42,000,000		42,000,000
Debt stated interest rate (as a percent)	4.625%		4.625%
Other
Debt:
Debt	21,000,000	[1]	20,000,000	[1]
Less current portion			20,000,000
Commercial paper
Debt:
Less current portion	0		0
Available line of credit under revolving credit agreement	$ 1,000,000,000

[1] $20 million of the amount shown as Other as of both June 27, 2014 and September 27, 2013 represents the current portion of the Company's total debt.