Retirement Plans (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 25, 2016	Mar. 27, 2015	Mar. 25, 2016	Mar. 27, 2015	Sep. 30, 2016
Defined benefit plan, net period benefit cost:
Impact on service cost and interest cost from change in measurement methodology					$ 6,000,000
United States Pension Plan of US Entity, Defined Benefit
Defined benefit plan, net period benefit cost:
Service cost	$ 2,000,000	$ 2,000,000	$ 4,000,000	$ 4,000,000
Interest cost	8,000,000	9,000,000	16,000,000	18,000,000
Expected return on plan assets	(12,000,000)	(14,000,000)	(24,000,000)	(28,000,000)
Amortization of net actuarial loss	3,000,000	2,000,000	6,000,000	4,000,000
Net periodic benefit cost	1,000,000	(1,000,000)	2,000,000	(2,000,000)
Amortization of net actuarial loss expected over current fiscal year			13,000,000
Minimum required contributions to pension plans for fiscal year 2014	3,000,000
Employer contributions			1,000,000
Non United States Pension Plans of Foreign Entity Defined Benefit
Defined benefit plan, net period benefit cost:
Service cost	2,000,000	3,000,000	4,000,000	5,000,000
Interest cost	10,000,000	13,000,000	21,000,000	26,000,000
Expected return on plan assets	(17,000,000)	(19,000,000)	(35,000,000)	(39,000,000)
Amortization of net actuarial loss	3,000,000	3,000,000	7,000,000	7,000,000
Net periodic benefit cost	(2,000,000)	$ 0	(3,000,000)	$ (1,000,000)
Amortization of net actuarial loss expected over current fiscal year			15,000,000
Minimum required contributions to pension plans for fiscal year 2014	25,000,000
Employer contributions	2,000,000		$ 13,000,000
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 4,000,000