2012 Separation Transaction (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 29, 2013	Mar. 30, 2012	Mar. 29, 2013	Mar. 30, 2012
2012 Separation Transaction
Professional fees	$ 1	$ 47	$ 4	$ 77
Non-cash impairment charges				23
Information technology related costs	2	5	6	6
Employee compensation costs	1	6	2	9
Marketing costs	13	2	27	2
Other costs	1	7	(7)	7
Total pre-tax separation charges	18	67	32	124
Tax-related separation charges		1	4	1
Tax (benefit) expense on pre-tax separation charges	3		(2)	(1)
Total separation charges (gain), net of tax benefit	21	68	34	124
Continuing Operations
2012 Separation Transaction
Non-cash impairment charges				23
Information technology related costs	2		4
Employee compensation costs		4		7
Marketing costs	13		27
Other costs	1		3
Total pre-tax separation charges	16	4	34	30
Tax-related separation charges		1	4	1
Tax (benefit) expense on pre-tax separation charges	3		(2)	(1)
Total separation charges (gain), net of tax benefit	19	5	36	30
Separation charges classified in continuing operations
Selling, general and administrative expenses ("SG&A")	16		29
Separation costs		4	5	4
Restructuring and asset impairment charges				26
Discontinued Operations
2012 Separation Transaction
Professional fees	1	47	4	77
Information technology related costs		5	2	6
Employee compensation costs	1	2	2	2
Marketing costs		2		2
Other costs		7	(10)	7
Total pre-tax separation charges	2	63	(2)	94
Total separation charges (gain), net of tax benefit	$ 2	$ 63	$ (2)	$ 94