Derivative Financial Instruments and Risk Management - Schedule of Amounts Recorded in the Consolidated Statements of Financial Position Related to Cumulative Basis Adjustments for Fair Value Hedges (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Derivative Instruments, Gain (Loss)
Carrying Value of the Hedged Liabilities	$ 5,886	$ 3,953
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Value of the Hedged Liabilities	(14)	54
Location, Statement of Financial Position, Balance: us-gaap:LongTermDebtCurrent
Derivative Instruments, Gain (Loss)
Carrying Value of the Hedged Liabilities	501	602
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Value of the Hedged Liabilities	1	3
Location, Statement of Financial Position, Balance: us-gaap:LongTermDebtNoncurrent
Derivative Instruments, Gain (Loss)
Carrying Value of the Hedged Liabilities	5,385	3,351
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Value of the Hedged Liabilities	$ (15)	$ 51