Earnings per Share (EPS) and Common Stock (Narrative) (Details) - USD ($)	3 Months Ended	6 Months Ended
	Mar. 28, 2020	Mar. 28, 2020	Sep. 30, 2019
Earnings Per Share and Common Stock
Stock option restricted shares and restricted stock units excluded from computation of EPS, shares	331,464	90,555
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		$ 65,000,000.0