Stockholders' Equity And Stock-Based Compensation (Summary Of Restricted Stock Units Issued To Officers, Directors, And Employees Under 2005 Stock Incentive Plan) (Details) shares in Thousands	9 Months Ended
	Jun. 29, 2018 $ / shares shares
Shares
Shares, Non-vested at beginning of period | shares	2,839
Shares, Granted | shares	1,224
Shares, Vested | shares	(1,002)
Shares, Forfeitures | shares	(302)
Shares, Non-vested at end of period | shares	2,759
Weighted-Average Grant Date Fair Value
Weighted Average Fair Value, Non-vested at beginning of period | $ / shares	$ 44.38
Weighted Average Fair Value, Granted | $ / shares	62.59
Weighted Average Fair Value, Vested | $ / shares	40.53
Weighted Average Fair Value, Forfeitures | $ / shares	44.15
Weighted Average Fair Value, Non-vested at end of period | $ / shares	$ 53.89