Earnings per Share (EPS) and Common Stock (Narrative) (Details) - USD ($)	3 Months Ended	6 Months Ended
	Mar. 30, 2019	Mar. 30, 2019	Mar. 31, 2018	Sep. 30, 2018
Earnings Per Share and Common Stock
Stock option restricted shares and restricted stock units excluded from computation of EPS, shares		0	0
Common stock, shares authorized	500,000,000	500,000,000		500,000,000
Stock Repurchase Program, Authorized Amount	$ 1,500,000,000	$ 1,500,000,000
Stock Repurchased During Period, Value	$ 64,994,000	$ 64,994,000