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Shareholders' Equity (Narrative) (Details) - USD ($) $ in Millions	Nov. 01, 2024	Sep. 30, 2024	Oct. 28, 2021
Subsequent Event [Member]
Class of Stock [Line Items]
Stock repurchase program, remaining authorization	$ 204.7
Class A Common Stock [Member]
Class of Stock [Line Items]
Securities issued		0
New Plan [Member] | Class A Common Stock [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized			$ 1,000.0

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Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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