Short-Term and Long-Term Restricted Cash, Cash Equivalents and Investments - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Senior Notes
Restricted Cash and Cash Equivalent Item [Line Items]
Proceeds from (repayments of) debt		$ 500
United Kingdom Recognized Investment Exchanges
Restricted Cash and Cash Equivalent Item [Line Items]
Operating costs covered for period	6 months
Dcm Dco Designation For Ice Futures United States
Restricted Cash and Cash Equivalent Item [Line Items]
Operating costs covered for period	1 year
Dcm Dco Designation For Ice Futures United States | Minimum
Restricted Cash and Cash Equivalent Item [Line Items]
Operating costs covered for period	6 months