Commitments and Contingent Liabilities - Visa Class B Common Shares and Makewhole Agreement Narrative (Details) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	May 31, 2024 exchange_offer shares	Dec. 31, 2025 USD ($) $ / shares shares
Loss Contingencies [Line Items]
Payment to escrow deposit		$ 5,600.0
Common stock, convertible, conversion price (in USD per share)		1.5108
Visa Class B-2 Shares
Loss Contingencies [Line Items]
Exchange offer program, shares received upon expiration (in shares) | shares	2,100,000
Remaining visa shares held by Northern Trust, original cost basis		$ 0.0
Estimated value of investment based on current conversion rate		$ 1,100.0
Visa Class C Shares
Loss Contingencies [Line Items]
Exchange offer program, shares received upon expiration (in shares) | shares	819,500
Exchange offer program, number of exchange offers | exchange_offer	3
Exchange offer program, length of time between exchanges	12 months
Exchange offer program, claim reduction percentage	50.00%
Number of shares held (in shares) | shares		10,700
Equity securities		$ 14.9
Visa Class A | Visa
Loss Contingencies [Line Items]
Closing stock price (in dollars per share) | $ / shares		$ 350.71