Goodwill and Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 27, 2013	Sep. 28, 2012
Changes in the carrying amount of goodwill, by segment ($ in millions):
Gross Goodwill, Beginning balance	$ 6,128	$ 5,989
Impairments, Beginning balance	(1,761)	(1,761)
Carrying Amount of Goodwill, Beginning balance	4,367	4,228
Acquisitions/ Purchase Accounting Adjustments	191	104
Transfers	0
Currency Translation	(39)	35
Gross Goodwill, Ending balance	6,280	6,128
Impairments, Ending balance	(1,761)	(1,761)
Carrying Amount of Goodwill, Ending Balance	4,519	4,367
NA Installation & Services
Changes in the carrying amount of goodwill, by segment ($ in millions):
Gross Goodwill, Beginning balance	2,127	2,119
Impairments, Beginning balance	(126)	(126)
Carrying Amount of Goodwill, Beginning balance	2,001	1,993
Acquisitions/ Purchase Accounting Adjustments	24	0
Transfers	(39)
Currency Translation	(8)	8
Gross Goodwill, Ending balance	2,104	2,127
Impairments, Ending balance	(126)	(126)
Carrying Amount of Goodwill, Ending Balance	1,978	2,001
ROW Installation & Services
Changes in the carrying amount of goodwill, by segment ($ in millions):
Gross Goodwill, Beginning balance	2,305	2,241
Impairments, Beginning balance	(1,068)	(1,068)
Carrying Amount of Goodwill, Beginning balance	1,237	1,173
Acquisitions/ Purchase Accounting Adjustments	77	38
Transfers	0
Currency Translation	(30)	26
Gross Goodwill, Ending balance	2,352	2,305
Impairments, Ending balance	(1,068)	(1,068)
Carrying Amount of Goodwill, Ending Balance	1,284	1,237
Global Products
Changes in the carrying amount of goodwill, by segment ($ in millions):
Gross Goodwill, Beginning balance	1,696	1,629
Impairments, Beginning balance	(567)	(567)
Carrying Amount of Goodwill, Beginning balance	1,129	1,062
Acquisitions/ Purchase Accounting Adjustments	90	66
Transfers	39
Currency Translation	(1)	1
Gross Goodwill, Ending balance	1,824	1,696
Impairments, Ending balance	(567)	(567)
Carrying Amount of Goodwill, Ending Balance	$ 1,257	$ 1,129