Aggregate dividends declared during the period for each share of common stock outstanding.

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Date the declared dividend will be paid, in CCYY-MM-DD format.

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Date the dividend to be paid was declared, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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Stockholders' Equity (Dividends) (Details) - USD ($) $ / shares in Units, $ in Millions				3 Months Ended								12 Months Ended
	Dec. 10, 2020	Nov. 19, 2020	Nov. 02, 2020	Oct. 02, 2020	Jun. 26, 2020	Mar. 27, 2020	Dec. 27, 2019	Sep. 27, 2019	Jun. 28, 2019	Mar. 29, 2019	Dec. 28, 2018	Oct. 02, 2020	Sep. 27, 2019	Sep. 28, 2018
Subsequent Event [Line Items]
Cash dividends declared and paid per share (in dollars per share)				$ 0.50	$ 0.44	$ 0.44	$ 0.44	$ 0.44	$ 0.38	$ 0.38	$ 0.38	$ 1.82	$ 1.58	$ 1.34
Cash dividends declared and paid				$ 83.5	$ 73.5	$ 74.9	$ 75.1	$ 75.1	$ 65.7	$ 66.0	$ 67.1	$ 307.0	$ 273.9
Dividend Declared [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends payable, date declared			Nov. 02, 2020
Cash dividends declared and paid per share (in dollars per share)			$ 0.50
Dividends payable, date to be paid	Dec. 10, 2020
Dividends payable, date of record		Nov. 19, 2020