Basis Of Presentation Basis of Presentation (Reclassifications) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Tax Cuts and Jobs Act, reclassification from AOCIL to retained earnings	$ 47,077	$ 0	$ 47,077	$ 0