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The percentage rate used to calculate dividend payments on preferred stock.

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Investments (Details) shares in Millions, $ in Millions				1 Months Ended	3 Months Ended		6 Months Ended
Investments (Details) shares in Millions, $ in Millions	Mar. 26, 2026 USD ($) shares	Mar. 03, 2026 USD ($) shares	Oct. 07, 2025 USD ($) member shares	Apr. 30, 2026 USD ($) shares	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Schedule of Equity Method Investments [Line Items]
Gain related to observable price change							$ 390
Loss related to observable price change					$ 0		0
Gain related to observable price change, cummulative					427		427
Loss related to observable price change, cummulative					3		3
Equity investments without readily determinable fair values					2,386		2,386		$ 1,194
Income (loss) from unconsolidated investees							43	$ 35
Fair value of investments					6		$ 6		$ 6
Intercontinental Exchange, Inc. \| Polymarket
Schedule of Equity Method Investments [Line Items]
Number of shares acquired (in shares) \| shares	4.2		9.6
Total purchase price			$ 1,000
Intercontinental Exchange, Inc. \| OKC Holdings Corporation
Schedule of Equity Method Investments [Line Items]
Number of shares acquired (in shares) \| shares		0.9
Total purchase price		$ 200
Intercontinental Exchange, Inc. \| Blockratize
Schedule of Equity Method Investments [Line Items]
Number of shares acquired (in shares) \| shares				0.4
Total purchase price				$ 40
Polymarket
Schedule of Equity Method Investments [Line Items]
Gain related to observable price change					$ 389
Ownership percentage of investment, outstanding shares (in percentage)					0.22		0.22
Ownership percentage of investment, diluted shares (in percentage)					0.14		0.14
Ownership percentage (in percentage)			6.00%
Number of board members \| member			1
Equity investments without readily determinable fair values	$ 600				$ 2,000		$ 2,000
Options Clearing Corporation
Schedule of Equity Method Investments [Line Items]
Income (loss) from unconsolidated investees					$ 17	$ 6	$ 43	$ 35
Ownership percentage (in percentage)					40.00%		40.00%
Bakkt
Schedule of Equity Method Investments [Line Items]
Ownership percentage (in percentage)					18.00%		18.00%		31.00%
Fair value of investments					$ 62		$ 62
Unrealized gain on investment					$ 62		$ 62
Blockratize
Schedule of Equity Method Investments [Line Items]
Ownership percentage of investment, outstanding shares (in percentage)					0.01		0.01
Ownership percentage of investment, diluted shares (in percentage)					0.01		0.01