Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Loss [Roll Forward]
Other comprehensive income (loss) before reclassifications	$ (34)	$ (85)	$ (70)	$ (68)
Net amount reclassified from accumulated other comprehensive income (loss)	(3)	(1)	(8)	5
Provision for income taxes	12	(2)	23	(13)
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	(186)	(56)	(156)	(68)
Ending balance	(211)	(144)	(211)	(144)
Currency Translation [Member]
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	(173)	(65)	(175)	(48)
Other comprehensive income (loss) before reclassifications	10	(92)	12	(109)
Net amount reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Provision for income taxes	0	0	0	0
Ending balance	(163)	(157)	(163)	(157)
Defined Benefit Pension and Retiree Health Benefit Plans [Member]
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	(13)	(17)	(13)	(16)
Other comprehensive income (loss) before reclassifications	0	0	0	(1)
Net amount reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Provision for income taxes	0	0	0	0
Ending balance	(13)	(17)	(13)	(17)
Interest Rate Swaps [Member]
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance	0	26	32	(4)
Other comprehensive income (loss) before reclassifications	(44)	7	(82)	42
Net amount reclassified from accumulated other comprehensive income (loss)	(3)	(1)	(8)	5
Provision for income taxes	12	(2)	23	(13)
Ending balance	$ (35)	$ 30	$ (35)	$ 30