Income Taxes (Details 2) - USD ($)			3 Months Ended	6 Months Ended
	Jan. 15, 2016	Jun. 20, 2013	Mar. 25, 2016	Mar. 25, 2016
Tax Sharing Agreement [Line Items]
Document Period End Date				Mar. 25, 2016
Deferred tax assets, net of valuation allowance			$ 212,000,000	$ 212,000,000
Gross deferred tax assets			2,300,000,000	2,300,000,000
Valuation allowances			2,100,000,000	2,100,000,000
Undistributed earnings of subsidiaries			0	0
Additional tax liability			0	0
Minimum
Tax Sharing Agreement [Line Items]
Income tax examination, additional taxes owed	$ 475,000,000
Maximum
Tax Sharing Agreement [Line Items]
Income tax examination, additional taxes owed	525,000,000
2007 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Pre - 2012 separation related tax liabilities			175,000,000	175,000,000
Income tax examination, additional taxes owed		$ 883,300,000
Income tax examination, proposed tax penalties		154,000,000
Income tax examination, amount of additional tax deficiency		$ 30,000,000
2007 Tax Sharing Agreement | Minimum
Tax Sharing Agreement [Line Items]
Income tax examination, additional taxes owed	475,000,000
2012 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Total liability threshold under Tax Sharing Agreement			725,000,000	$ 725,000,000
2012 Tax Sharing Agreement | Maximum
Tax Sharing Agreement [Line Items]
Income tax examination, additional taxes owed	$ 525,000,000
Tyco International | 2007 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Tax liability share percentage				27.00%
Tyco International | 2012 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Total liability threshold under Tax Sharing Agreement			$ 500,000,000	$ 500,000,000
Tax liability share percentage			52.50%	52.50%
Pentair
Tax Sharing Agreement [Line Items]
Tax liability share percentage				42.00%
Net Cash Payment Due to Resolution of Income Tax Liabilities			$ 15,000,000
Pentair | 2012 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Tax liability share percentage			20.00%	20.00%
ADT
Tax Sharing Agreement [Line Items]
Tax liability share percentage				58.00%
Net Cash Payment Due to Resolution of Income Tax Liabilities			$ 1,000,000
ADT | 2012 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Tax liability share percentage			27.50%	27.50%
Pentair and ADT | 2012 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Total liability threshold under Tax Sharing Agreement			$ 225,000,000	$ 225,000,000
Medtronic
Tax Sharing Agreement [Line Items]
Payment made to tax sharing agreement parties in anticipation of tax ruling			2,000,000
Medtronic | 2007 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Tax liability share percentage				42.00%
TE Connectivity
Tax Sharing Agreement [Line Items]
Payment made to tax sharing agreement parties in anticipation of tax ruling			$ 120,000,000
TE Connectivity | 2007 Tax Sharing Agreement
Tax Sharing Agreement [Line Items]
Tax liability share percentage				31.00%