CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 25, 2016	Mar. 27, 2015	Mar. 25, 2016	Mar. 27, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 145	$ 165	$ 221	$ 326
Other comprehensive income (loss), net of tax
Foreign currency translation	44	(176)	1	(374)
Defined benefit and post retirement plans	3	4	8	9
Unrealized gain on marketable securities and derivative instruments, net of tax	2	0	3	0
Total other comprehensive income (loss), net of tax	49	(172)	12	(365)
Comprehensive income (loss)	194	(7)	233	(39)
Less: comprehensive loss attributable to noncontrolling interests	(1)	(2)	(1)	(3)
Comprehensive income (loss) attributable to Tyco ordinary shareholders	$ 195	$ (5)	$ 234	$ (36)