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Share Repurchases - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Sep. 30, 2025	Sep. 30, 2024	Oct. 28, 2021
Accelerated Share Repurchases [Line Items]
Open market share repurchase			3.2
Open market share repurchase amount			$ 300.0
Payment for share repurchase			$ 600.0	$ 0.0
Stock repurchase program remaining authorized repurchase amount					$ 1,000.0
Shares Issued Price Per Share	$ 92.81		$ 92.81
Commercial Bank
Accelerated Share Repurchases [Line Items]
Stock repurchase program remaining authorized repurchase amount		$ 528.9
Evergreen Program
Accelerated Share Repurchases [Line Items]
Stock repurchase program, authorized amount	$ 170.0		$ 170.0
Share Repurchase Program
Accelerated Share Repurchases [Line Items]
Stock repurchase program, authorized amount	$ 130.0		$ 130.0
Stock repurchased during period, shares	0.3	2.8	3.1
Payment for share repurchase		$ 300.0
Shares Issued Price Per Share	$ 95.71		$ 95.71

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- Definition

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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The cash outflow to reacquire common stock during the period.

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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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