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Share Repurchase Share repurchase (Details) - USD ($)			3 Months Ended	6 Months Ended
	Feb. 27, 2024	Nov. 17, 2023	Mar. 30, 2024	Mar. 30, 2024	Nov. 15, 2023	Nov. 06, 2023	Sep. 23, 2022
share repurchase plan [Line Items]
Stock Repurchased During Period, Value			$ 0	$ 150,000,000
Accelerated share repurchase agreement						$ 500,000,000
Accelerated Share Repurchases, Settlement (Payment) or Receipt		$ 500,000,000			$ 500,000,000
Percentage of share repurchase program		80.00%
Repurchase of common stock (in shares)	1,400,000	5,600,000
September 22, 2022
share repurchase plan [Line Items]
Stock Repurchase Program, Authorized Amount							$ 1,000,000,000
Stock Repurchased During Period, Shares			0	2,200,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount			$ 348,600,000	$ 348,600,000
December 11, 2020
share repurchase plan [Line Items]
Stock Repurchase Program, Authorized Amount			$ 1,000,000,000	$ 1,000,000,000

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[Line Items] for share repurchase plan [Table]

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Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement.

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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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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