Stockholders' Equity (Share Repurchase) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Sep. 27, 2019	Sep. 28, 2018	Sep. 29, 2017
Share Repurchase [Line Items]
Share repurchase program	$ 657.6	$ 759.5	$ 432.3
Share repurchase program (in shares)	8.9	7.7
Treasury stock, average price per share (in dollars per share)	$ 74.26	$ 98.84
Remaining shares available under share repurchase program	$ 1,626.4
Authorized repurchased amount	$ 2,000.0

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the par value method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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