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Name:	us-gaap_AcceleratedShareRepurchasesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Share Repurchases - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2024	Oct. 28, 2021
Accelerated Share Repurchases [Line Items]
Stock repurchase program remaining authorized repurchase amount		$ 1,000.0
Commercial Bank
Accelerated Share Repurchases [Line Items]
Stock repurchase program remaining authorized repurchase amount	$ 658.9