Derivative Instruments and Hedging Activities - Schedule of Fair Value Within the Derivative Instrument Valuation on the Balance Sheets (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 193	$ 156
Derivative Liabilities	93	360
Derivatives Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative Assets	51	31
Derivative Liabilities	10	27
Derivatives Not Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative Assets	142	125
Derivative Liabilities	83	333
Interest rate contracts current | Derivatives Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative Assets	9	2
Derivative Liabilities	2	6
Interest rate contracts current | Derivatives Not Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative Assets	24	17
Derivative Liabilities	0	0
Interest rate contracts long-term | Derivatives Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative Assets	42	29
Derivative Liabilities	8	21
Interest rate contracts long-term | Derivatives Not Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative Assets	98	94
Derivative Liabilities	1	0
Energy-related commodity contracts current | Derivatives Not Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative Assets	14	10
Derivative Liabilities	12	46
Energy-related commodity contracts long-term | Derivatives Not Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Derivative Assets	6	4
Derivative Liabilities	$ 70	$ 287