Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended			9 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016	Jul. 01, 2016
Income Tax Contingency [Line Items]
Effective income tax rate (percent)	30.40%		31.00%	29.20%	26.50%
Release of valuation allowance					$ 11,200,000
Income tax benefit	$ 38,767,000		$ 31,870,000	$ 79,820,000		$ 66,418,000
Decrease in uncertain tax positions				$ 11,000,000
Foreign Affiliate
Income Tax Contingency [Line Items]
Income tax benefit		$ 3,300
Foreign Tax Credits and US IRC section
Income Tax Contingency [Line Items]
Income tax benefit related to an amended tax return to claim additional benefits			5,700,000
Income tax benefit offsetting of unfavorable in return to accrual adjustments			8,800,000
Income Tax Reserve Release Due to Expiration of Statute of Limitations
Income Tax Contingency [Line Items]
Favorable income tax reserve due to expiration of statute limitations			$ 4,500,000