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Area of a real estate property.

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Amount of contractual obligation, including, but not limited to, long-term debt, lease obligation, purchase obligation, and other commitments.

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Basis of Presentation - Business Events (Details) ft² in Thousands, $ in Millions		3 Months Ended
	Jan. 12, 2026 USD ($)	Mar. 31, 2026	Feb. 25, 2026 USD ($) ft²
Headquarters at 200 Greenwich Street
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Contractual obligation (up to)			$ 2,800
Finance lease, liability			370
Finance lease, right-of-use asset, before accumulated amortization			$ 370
Headquarters at 200 Greenwich Street \| Property Under Construction
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of real estate property \| ft²			1,950
ICS \| Interest Acquired in Swisscard AECS GmbH
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intangible assets acquired, excluding goodwill	$ 272
Acquired finite-lived intangible assets, weighted average useful life		8 years
Goodwill acquired during period	$ 136