Equity and Comprehensive Income - Schedule of Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Jun. 24, 2016	Mar. 25, 2016	Jun. 26, 2015	Jun. 24, 2016	Jun. 26, 2015
Equity [Abstract]
Net income	$ 238		$ 156	$ 459	$ 482
Gain (loss) on foreign currency translation	7		25	(21)	(349)
(Loss) gain on liquidation of foreign entities	(1)		3	28	3
Foreign currency translation	6		28	7	(346)
Amortization of net actuarial losses	7		6	20	17
Income tax expense	(2)		(2)	(7)	(4)
Defined benefit and post retirement plans, net of tax	5		4	13	13
Unrealized gain (loss) on marketable securities and derivative instruments	4		(6)	9	(6)
Income tax (expense) benefit	(1)		2	(3)	2
Unrealized gain (loss) on marketable securities and derivative instruments, net of tax	3		(4)	6	(4)
Total other comprehensive income (loss), net of tax	14		28	26	(337)
Comprehensive income	252		184	485	145
Less: comprehensive loss attributable to noncontrolling interests	(1)		0	(2)	(3)
Comprehensive income attributable to Tyco ordinary shareholders	253		184	487	148
Class of Stock [Line Items]
Gain (loss) related to net investment hedge	(6)		(12)	$ (6)	8
Cumulative translation gains (losses)	$ 1	$ (31)
Provision for cumulated translation losses included in pre-tax loss for write-down to fair value		24
Charges Reflected in SG&A
Class of Stock [Line Items]
Cumulative translation gains (losses)		(7)
Discontinued Operations
Class of Stock [Line Items]
Cumulative translation gains (losses)		$ 2	$ (3)		$ (3)