Restructuring and Asset Impairment Charges, Net (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 25, 2016	Mar. 27, 2015	Mar. 25, 2016	Mar. 27, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	$ 5	$ 12	$ 17	$ 70
Restructuring and Related Cost, Caption that Includes Restructuring Charges	4	12	16	70
Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	$ 1	$ 0	$ 1	$ 0
2016 Actions
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	6	0	15	0
2016 Actions | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	5		13
2016 Actions | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions			1
2016 Actions | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	1		1
2016 Actions | NA Installation & Services
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions			2
2016 Actions | NA Installation & Services | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions			2
2016 Actions | NA Installation & Services | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions			0
2016 Actions | NA Installation & Services | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions			0
2016 Actions | ROW Installation & Services
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	2		3
2016 Actions | ROW Installation & Services | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	2		3
2016 Actions | ROW Installation & Services | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions			0
2016 Actions | ROW Installation & Services | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	0		0
2016 Actions | Global Products
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	3		6
2016 Actions | Global Products | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	2		4
2016 Actions | Global Products | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions			1
2016 Actions | Global Products | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	1		1
2016 Actions | Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	1		4
2016 Actions | Corporate and Other [Member] | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	1		4
2016 Actions | Corporate and Other [Member] | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions			0
2016 Actions | Corporate and Other [Member] | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	0		0
Program 2015
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	(2)	9	1	58
Restructuring and asset impairment charges, total	179		179
Program 2015 | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	(2)		1	53
Restructuring and asset impairment charges, total	164		164
Program 2015 | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions				5
Restructuring and asset impairment charges, total	14		14
Program 2015 | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	1		1
Program 2015 | NA Installation & Services
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions		4		26
Restructuring and asset impairment charges, total	46		46
Program 2015 | NA Installation & Services | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	(1)		1	26
Restructuring and asset impairment charges, total	42		42
Program 2015 | NA Installation & Services | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions				0
Restructuring and asset impairment charges, total	3		3
Program 2015 | NA Installation & Services | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	1		1
Program 2015 | ROW Installation & Services
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions		4		19
Restructuring and asset impairment charges, total	91		91
Program 2015 | ROW Installation & Services | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	0			14
Restructuring and asset impairment charges, total	81		81
Program 2015 | ROW Installation & Services | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions				5
Restructuring and asset impairment charges, total	9		9
Program 2015 | ROW Installation & Services | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	1		1
Program 2015 | Global Products
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions		1		3
Restructuring and asset impairment charges, total	21		21
Program 2015 | Global Products | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	0			3
Restructuring and asset impairment charges, total	21		21
Program 2015 | Global Products | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions				0
Restructuring and asset impairment charges, total	1		1
Program 2015 | Global Products | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	(1)		(1)
Program 2015 | Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions		0		10
Restructuring and asset impairment charges, total	21		21
Program 2015 | Corporate and Other [Member] | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	(1)			10
Restructuring and asset impairment charges, total	20		20
Program 2015 | Corporate and Other [Member] | Facility Exit and Other Charges
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions				0
Restructuring and asset impairment charges, total	1		1
Program 2015 | Corporate and Other [Member] | Selling, General and Administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges, total	0		0
2014 and prior actions
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	$ 1	$ 3	$ 1	$ 12