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Acquisitions - Acquisition of Commonwealth Financial Network (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Aug. 01, 2025	Dec. 31, 2025	Dec. 31, 2025
Fair value of consideration transferred
Loans Payable, Fair Value Disclosure		$ 88,000	$ 88,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		194,000
Commonwealth Financial Network
Fair value of consideration transferred
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Commonwealth Financial Network. Acquisition
Fair value of consideration transferred
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual			(201,300)
Business Combination, Acquisition Related Costs		486,500
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual			$ 1,180,000
Commonwealth Financial Network. Acquisition \| Benefits And Contract Termination
Fair value of consideration transferred
Business Combination, Acquisition Related Costs		419,000
Commonwealth Financial Network. Acquisition \| Professional Services
Fair value of consideration transferred
Business Combination, Acquisition Related Costs		67,500
Commonwealth Financial Network. Acquisition \| Advisor Relationships
Fair value of consideration transferred
Finite-Lived Intangible Assets Acquired		$ 1,690,000
Weighted-Average Life Remaining (in years)	14 years
Commonwealth Financial Network. Acquisition \| Trade Names
Fair value of consideration transferred
Finite-Lived Intangible Assets Acquired	$ 26,000
Weighted-Average Life Remaining (in years)	16 years