Earnings per Share (EPS) and Common Stock (Narrative) (Details) - USD ($)			3 Months Ended		9 Months Ended
	May 03, 2019	Jul. 20, 2018	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Sep. 30, 2018
Accelerated Share Repurchases [Line Items]
Stock option restricted shares and restricted stock units excluded from computation of EPS, shares					3,000	100,000
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			$ 25,001,000	$ 100,000,000	$ 89,995,000	$ 100,000,000
Accelerated Share Repurchases, Settlement (Payment) or Receipt	$ 200,000,000	$ 1,000,000,000
Accelerated Share Repurchase Initial Delivery Percent of Total		80.00%
Accelerated Share Repurchase Agreement [Member]
Accelerated Share Repurchases [Line Items]
Stock Repurchased and Retired During Period, Shares	3,000,000.0	8,200,000