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Share Repurchase Share repurchase (Details) - USD ($) shares in Millions, $ in Millions		3 Months Ended	6 Months Ended
	Dec. 09, 2020	Mar. 26, 2022	Mar. 26, 2022
share repurchase plan [Line Items]
Stock Repurchased During Period, Value		$ 200.0	$ 367.0
December 11, 2020
share repurchase plan [Line Items]
Stock Repurchase Program, Authorized Amount	$ 1,000.0
Stock Repurchase Program, Period in Force	5 years
December 11, 2020
share repurchase plan [Line Items]
Stock Repurchased During Period, Shares		2.9	5.2
Stock Repurchase Program, Remaining Authorized Repurchase Amount		$ 324.7	$ 324.7

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[Line Items] for share repurchase plan [Table]

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Amount of stock repurchase plan authorized.

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Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount remaining of a stock repurchase plan authorized.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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